RU2300344C2 - Multi-mobile tooth brush - Google Patents

Abstract

FIELD: medical appliances.

SUBSTANCE: toothbrush with electric drive has engine, handle disposed at one end of toothbrush and head at the other end. Head had longitudinal axis and first bristle holder with many bundles of bristles. Engine is operatively connected with first bristle holder to move first bristle holder along first axis and around second axis.

EFFECT: improved cleaning properties.

12 cl, 22 dwg

Description

The invention relates to the field of toothbrushes, and more specifically, the present invention relates to the field of electric toothbrushes.

The most famous electric toothbrushes use a single bristle holder that is powered or driven by an electric motor built into the toothbrush. The bristle holders in these toothbrushes are capable of various movements. For example, rotary movement bristle holders are well known. Bristle holders that reciprocate in a straight line in the plane of the brush are also known. And bristle holders that reciprocate in a straight line perpendicular to the plane of the brush are also known. Although they are satisfactory in certain respects, there is still a need to improve the design of electrically driven toothbrushes.

Numerous attempts have been made to improve the design, cleaning efficiency, simplicity and / or commercial viability of electric toothbrushes. One approach involves providing multiple electrically driven bristle holders. Most specialists group several sets of bristles along the end of the brush and use a drive mechanism to simultaneously rotate each of the sets of bristles. Examples of these constructs include those described in US Pat. Nos. 3242516, 4156620, 4845795, 5088145, 5020179, 4827550 and 4545087, all of which are incorporated herein by reference.

A similar strategy is to group sets of bristles on multiple rotating bristle holders, as described in US Pat. Nos. 2,140,307 and 5,170,525, both of which are incorporated herein by reference. Instead of rotating each individual set of bristles around its center, that is, the approach adopted in the patents noted earlier, the designs described in the '307 and' 525 patents rotate several groups of sets of bristles around the center of the bristle holder. Specifically, several groups of sets of bristles are located on an annular bristle holder, and this bristle holder, usually one of several, rotates around its own axis.

US Pat. No. 5,070,567, incorporated herein by reference, describes a construction combining the two strategies noted above. The rotating bristle holder is provided with several individually rotating sets of bristles. Although this design probably provides many advantages associated with each of its predecessors, the cleaning efficiency of only rotating sets of bristles is somewhat limited.

Another design is described in US Pat. No. 5,617,603, incorporated herein by reference. The '603 patent describes a zigzag-sweeping brush assembly. Obviously, two bristle holders move along a complex path in the plane of the toothbrush.

Although dual bristle holders are described in the prior art that undergo various combinations of movements, there remains a need for an electric toothbrush with several bristle holders that provides additional combinations of movements.

The present invention solves all of the above problems and proposes, in one aspect of the invention, an electrically driven toothbrush comprising a body having an end, a head opposite to that end, and a neck extending between the end and the head. The housing forms a hollow region inside. In addition, the toothbrush contains an electric motor and a power source located in the hollow region of the housing. The engine provides a rotating or vibrating drive shaft, which has a distal end offset from the longitudinal axis of the drive shaft. The toothbrush comprises a base pivotally attached to the head and positioned relative to the head using a laterally extending hinge element. The base defines a receiving channel capable of receiving the distal end of the drive shaft. In addition, the toothbrush comprises a first bristle holder and a second bristle holder located on the brush head. The first bristle holder is attached to the base. When the drive shaft rotates or vibrates, its distal end moves in the receiving channel of the base and causes the base and the first bristle holder to rotate around the hinge element.

Another object of the invention provides an electrically driven toothbrush comprising a housing having a first end, a head opposite to it, and a neck extending between this end and the head. The housing forms a hollow inner region. In addition, the toothbrush contains an electric motor and a power source located in the hollow region in the housing. The engine provides a reciprocating drive shaft. In addition, the toothbrush contains a base pivotally attached to the head and positioned relative to the head. The base contains a lever extending from the base engaged with the drive shaft. The toothbrush also includes a first bristle holder located on the base and attached to it, and a second bristle holder located on the head. When the drive shaft is reciprocating, its distal end moves the base lever and causes the base and the first bristle holder to rotate.

Another object of the invention provides an electrically driven toothbrush comprising a body having a first end, a head opposite to that end, and a neck extending between the end and the body. The housing forms a hollow inner region. The head forms a second hollow inner region. The head also has an inclined surface along the outer surface of the head. An electrically operated toothbrush also includes an electric motor and a power source located in the hollow interior of the housing. The engine provides a rotating or vibrating drive shaft. This shaft has a distal end offset from the longitudinal axis of the drive shaft. The toothbrush also contains a positionable base located on the head with the ability to move and in contact with an inclined surface. The base comprises an outwardly extending arm that extends into a second hollow region within the head. The lever forms a channel, inside which is located the distal end of the drive shaft. The toothbrush also comprises first and second bristle holders, of which a first bristle holder is attached to the positioned base. When the drive shaft rotates or vibrates, its distal end moves inside the channel provided in the base lever. This movement causes the base and the first bristle holder to move along an inclined surface.

Another object of the invention provides an electrically driven toothbrush comprising a housing having a first end and a head opposite to that end and a neck extending between the end and the head. The housing forms a hollow inner region. The head forms a second inner hollow region. The head comprises an inclined surface along the outer surface of the head. The toothbrush also contains an electric motor and a power source located in a hollow region in the housing. The engine provides a reciprocating drive shaft having a distal end offset from the longitudinal axis of the drive shaft. The toothbrush also contains a positionable base located on the head with the ability to move and in contact with an inclined surface. The base comprises an outwardly extending lever that extends into a second hollow region in the head. The lever forms an opening, inside which is located the distal end of the drive shaft. The toothbrush also includes a first bristle holder located on the base and attached to it, and a second bristle holder located on the head. When reciprocating the drive shaft, its distal end moves the base lever and causes the base and the first bristle holder to move along the inclined surface.

Another object of the invention provides an electrically driven toothbrush comprising a housing having a first end, a head opposite to that end, and a neck extending between the end and the head. The housing forms a hollow inner region. The head forms a second hollow inner region. The head also contains an elongated hole along the outer surface of the head. The toothbrush also contains an electric motor and a power source located in a hollow region in the housing. The engine provides a rotating or vibrating drive shaft having a distal end. The toothbrush also comprises a gear gear engaged with the distal end of the drive shaft. The gear wheel forms a channel along the outer surface of the gear wheel. The toothbrush also contains a positionable base located on the head with the ability to move and positioned above the elongated hole formed in the head. The base comprises an outwardly extending guide element located in the channel of the gear gear and in contact with it. The guide element extends through an elongated hole formed along the head. In addition, the toothbrush contains a first bristle holder located on the base and attached to it. The toothbrush also comprises a second bristle holder located on the head. When the drive shaft rotates or vibrates, the gear rotates, thereby causing the guide element, base and first bristle holder to shift along the outer surface of the head.

Another object of the invention provides an electrically driven toothbrush comprising a body having an end, a head opposite to that end, and a neck extending between the end and the head. The housing forms a hollow inner region. The head forms a second inner hollow region. The head contains an elongated hole along the outer surface of the head. The toothbrush also contains an electric motor and a power source located in a hollow region in the housing. The engine provides a reciprocating drive shaft having a distal end. The toothbrush also contains a positionable base located in the head with the ability to move and positioned above the elongated hole formed in the head. The base comprises an outwardly extending guide member protruding through an elongated hole in the head. The guide element is engaged with the distal end of the drive shaft. The toothbrush comprises a first bristle holder located on the base and attached to it. The toothbrush also comprises a second bristle holder located on the head. When reciprocating the drive shaft, its distal end moves the base and the first bristle holder along the head.

Another object of the invention provides an electrically driven toothbrush comprising a housing having a first end, a head opposite to that end, and a neck extending between the first end and the head. The housing forms a hollow inner region. The head forms a second hollow inner region. The head also contains an elongated hole along the outer surface of the head. In addition, the toothbrush contains an electric motor and a power source located in the hollow region in the housing. The engine provides a rotating or vibrating drive shaft. The toothbrush also comprises a gear gear engaged with the drive shaft. The gear wheel forms a channel along its outer surface. The toothbrush also contains a base located on the head with the ability to move and positioned relative to the head. The base comprises an outwardly extending guide member protruding through an elongated hole and into a second hollow region in the head. The guide element is located in the channel of the gear gear and is in contact with it. The toothbrush also comprises first and second bristle holders located on the head. A second bristle holder is attached to the base. When the drive shaft rotates or vibrates, the gear rotates, causing the guide element, base and second bristle holder to shift.

Another object of the invention provides an electrically driven toothbrush comprising a housing having a first end, a head opposite to that end, and a neck extending between the end and the head. The housing forms a hollow inner region, and the head forms a second hollow inner region. The head also contains an elongated hole along its outer surface. In addition, the toothbrush contains an electric motor and a power source located in the hollow region in the housing. The engine provides a reciprocating drive shaft. In addition, the toothbrush contains a positionable base located on the head with the ability to move. The base comprises an outwardly extending guide member that projects through an elongated hole formed along the head. The guide element extends into the second hollow region in the head. The guide element is engaged with the drive shaft. The toothbrush also comprises a first bristle holder located on the head and a second bristle holder located on the base and attached to it. When the drive shaft is reciprocating, the drive shaft moves the base guide member and causes the base and the second bristle holder to move.

In yet another aspect, the invention provides an electrically driven toothbrush comprising a housing having a first end, a head opposite to that end, and a neck extending between the first end and the head. The housing forms a hollow inner region, and the head forms a second hollow inner region and contains internal support elements that form a cam hole of the second hollow region in the head. The toothbrush also contains an electric motor and a power source located in a hollow region in the housing. The engine provides a rotating or vibrating drive shaft. The toothbrush also comprises a gear gear engaged with the distal end of the drive shaft. A gear wheel defines a channel along its outer surface. The toothbrush also contains a positionable base located on the head with the ability to move. The base comprises an outwardly extending lever protruding into a second hollow region in the head. The lever contains a laterally extending guide element located in the cam hole formed by the internal support elements of the head, and engaged with it. The toothbrush also comprises a connecting unit having a guide member located in the channel of the gear gear. The connecting unit provides the interaction of the gear with the base lever. The toothbrush contains a first bristle holder located on the base and attached to it, and also contains a second bristle holder located on the head and between the first bristle holder and the first end of the housing. When the drive shaft rotates or vibrates, the gear rotates, thereby causing a displacement of the guide element, the connecting unit, the base and the first bristle holder.

Another object of the invention provides an electrically driven toothbrush comprising a body having an end, a head opposite to that end, and a neck extending between the end and the head. The housing forms a hollow inner region, and the head forms a second hollow inner region. The head also contains internal support elements that form a cam hole in the head. In addition, the toothbrush contains an electric motor and a power source located in the hollow region in the housing. The engine provides a reciprocating drive shaft having a distal end. The toothbrush also contains a positionable base located on the head with the possibility of movement and containing an outward extending lever protruding into the second hollow region in the head. The lever contains a laterally extending guide element located in the cam hole formed by the internal support elements of the head, and engaged with it. Toothbrush also contains a connecting node that provides interaction of the drive shaft with the base lever. The toothbrush also comprises first and second bristle holders located on the head. The first bristle holder is fixed to the base. When reciprocating the drive shaft, its distal end moves the base lever and causes the base and the first bristle holder to move.

Another object of the invention provides an electrically driven toothbrush comprising a body having an end, a head opposite to that end, and a neck extending between the end and the head. The housing forms a hollow inner region, and the head forms a second hollow inner region. The head further comprises internal support elements that form a cam hole in a second region in the head. The toothbrush also contains an electric motor and a power source located in a hollow region in the housing. The engine provides a reciprocating drive shaft. The toothbrush also contains a positionable base located on the head with the ability to move. The base comprises an outwardly extending lever protruding into a second hollow region in the head. The lever contains a laterally extending guide element located in the cam hole formed by the internal support elements of the head, and engaged with it. Toothbrush also contains a connecting node that provides interaction of the drive shaft with the base lever. The toothbrush also comprises first and second bristle holders located on the head. A second bristle holder is attached to the base. When the drive shaft is reciprocating, the drive shaft moves the base lever and causes the base and the second bristle holder to move.

Another object of the invention provides an electrically driven toothbrush comprising a body having an end, a head opposite to that end, and a neck extending between the end and the head. The housing forms a hollow inner region, and the head forms a second hollow inner region. The head also contains an elongated hole extending along the outer surface of the head. In addition, the toothbrush contains an electric motor and a power source located in the hollow region in the housing. The engine provides a rotating or vibrating drive shaft. The toothbrush also comprises a gear gear engaged with the drive shaft. The gear wheel forms a channel along its outer surface. The toothbrush also contains a positionable base located on the head with the ability to move and positioned above the elongated hole formed in the head. The base comprises an outwardly extending guide element extending through an elongated hole formed in the head and located in a second hollow region in the head. The toothbrush also contains a connecting unit located in the second hollow region in the head. The connecting unit has a first end located in the channel of the gear gear and in contact with it, and a second end engaged with the guide element of the base. The toothbrush also comprises first and second bristle holders located on the head. The first bristle holder is attached to the base. When the drive shaft rotates or vibrates, the gear rotates, which causes a displacement of the connecting unit, guide element, base and first bristle holder along the outer surface of the head.

Another object of the invention provides an electrically driven toothbrush comprising a body having a head, an end opposite the head, and a neck extending between the head and the end. The housing forms a first hollow inner region, and the head forms a second hollow inner region. The head also contains an outward facing surface. The toothbrush also contains a motor and a power source located in the first inner region. The engine provides the drive shaft. The toothbrush also comprises a plurality of bristle holders located on the outwardly facing surface of the head. In addition, the toothbrush contains a base located on the outwardly facing surface of the head with the possibility of movement and engaged with the drive shaft of the engine. At least one of the bristle holders is engaged with the base. During engine operation, the base and at least one of the bristle holders engaged with it move along the head. The head forms an oblong hole in the outwardly facing surface of the head. The orientation or shape of this hole controls the movement of the base and bristle holders engaged with it.

Another object of the invention provides an electrically driven toothbrush comprising a body with a head, an end opposite the head, and a neck extending between the head and the end. The housing forms a first hollow inner region, and the head forms a second hollow inner region. The head also contains an outward facing surface. The toothbrush also comprises an engine and a power source located in the first inner region, the engine providing a drive shaft. In addition, the toothbrush contains many bristle holders located on the outwardly facing surface of the head. In addition, the toothbrush contains a base located on the outwardly facing surface of the head with the possibility of movement and engaged with the drive shaft. At least one of the bristle holders is engaged with the base. During engine operation, the base and at least one of the bristle holders engaged with it move along the head. The head contains an inclined surface in the outwardly facing surface of the head, which controls the movement of the base and at least one of the bristle holders engaged with the base.

Brief Description of the Drawings

The present invention can be performed with various components and systems of components, and various methods, methods or procedures and the order of the stages. The accompanying drawings are intended only to illustrate preferred embodiments, while they are not necessarily made to scale and are not intended to limit the present invention.

The present invention will be better understood from the following description with reference to the accompanying drawings, in which is indicated:

Figure 1 is a perspective view of a preferred embodiment of a toothbrush according to the invention, illustrating various planes and their orientation with respect to a toothbrush;

Figure 2 is a front view of a toothbrush illustrating bristle holders of a preferred embodiment of a toothbrush according to the invention;

FIG. 2A is a view of a first toothbrush bristle holder shown in FIG. 2 illustrating a bristle holder performing a certain type of movement;

FIG. 2B is a view of a first bristle holder of the toothbrush shown in FIG. 2 illustrating a bristle holder performing a certain type of movement;

FIG. 2C is a view of a first bristle holder of the toothbrush shown in FIG. 2 illustrating a bristle holder performing a certain type of movement;

FIG. 2D is a view of a first bristle holder of the toothbrush shown in FIG. 2 illustrating a bristle holder performing a certain type of movement;

FIG. 2E is a view of a first bristle holder of the toothbrush shown in FIG. 2 illustrating a bristle holder performing a certain type of movement;

FIG. 2F is a view of a second toothbrush bristle holder shown in FIG. 2 illustrating a bristle holder performing a certain type of movement;

FIG. 2G is a view of a second toothbrush bristle holder shown in FIG. 2 illustrating a bristle holder performing a certain type of movement;

FIG. 2H is a view of a second bristle holder of the toothbrush shown in FIG. 2 illustrating a bristle holder performing a certain type of movement;

FIG. 2I is a view of a second toothbrush bristle holder shown in FIG. 2 illustrating a bristle holder performing a certain type of movement;

Figure 3 is a front view of a toothbrush illustrating bristle holders of a preferred embodiment of a toothbrush according to the invention;

FIG. 3A is a view of a first toothbrush bristle holder shown in FIG. 3 illustrating a bristle holder performing a certain type of movement;

FIG. 3B is a view of a first bristle holder of the toothbrush shown in FIG. 3 illustrating a bristle holder performing a certain type of movement;

FIG. 3C is a view of a first toothbrush bristle holder shown in FIG. 3 illustrating a bristle holder performing a certain type of movement;

FIG. 3D is a view of a first bristle holder of the toothbrush shown in FIG. 3 illustrating a bristle holder performing a certain type of movement;

FIG. 3E is a view of a second toothbrush bristle holder shown in FIG. 3 illustrating a bristle holder performing a certain type of movement;

FIG. 3F is a view of a second bristle holder of the toothbrush shown in FIG. 3 illustrating a bristle holder performing a certain type of movement;

FIG. 3G is a view of a second toothbrush bristle holder shown in FIG. 3 illustrating a bristle holder performing a certain type of movement;

FIG. 3H is a view of a second toothbrush bristle holder shown in FIG. 3 illustrating a bristle holder performing a certain type of movement;

4 is a front view of a preferred embodiment of a toothbrush according to the invention;

FIG. 4A is a view of a first toothbrush bristle holder shown in FIG. 4 illustrating a bristle holder performing a certain type of movement;

FIG. 4B is a view of a second toothbrush bristle holder shown in FIG. 4 illustrating a bristle holder performing a certain type of movement;

FIG. 4C is a view of a second toothbrush bristle holder shown in FIG. 4 illustrating a bristle holder performing a certain type of movement;

FIG. 4D is a view of a second toothbrush bristle holder shown in FIG. 4 illustrating a bristle holder performing a certain type of movement;

FIG. 4E is a view of a second toothbrush bristle holder shown in FIG. 4 illustrating a bristle holder performing a certain type of movement;

5 is a front view of a preferred embodiment of a toothbrush according to the invention;

FIG. 5A is a view of a first bristle holder of the toothbrush shown in FIG. 5 illustrating a bristle holder performing a certain type of movement;

5B is a view of a first bristle holder of the toothbrush shown in FIG. 5, illustrating a bristle holder performing a certain type of movement;

5C is a view of a first bristle holder of the toothbrush shown in FIG. 5, illustrating a bristle holder performing a certain type of movement;

FIG. 5D is a view of a second toothbrush bristle holder shown in FIG. 5 illustrating a bristle holder performing a certain type of movement;

FIG. 5E is a view of a second toothbrush bristle holder shown in FIG. 5 illustrating a bristle holder performing a certain type of movement;

FIG. 5F is a view of a second toothbrush bristle holder shown in FIG. 5 illustrating a bristle holder performing a certain type of movement;

Fig. 5G is a view of a second bristle holder of the toothbrush shown in Fig. 5 illustrating a bristle holder performing a certain type of movement;

6 is a front view of a preferred embodiment of a toothbrush according to the invention;

FIG. 6A is a view of a first toothbrush bristle holder shown in FIG. 6 illustrating a bristle holder performing a certain type of movement;

FIG. 6B is a view of a second toothbrush bristle holder shown in FIG. 6 illustrating a bristle holder performing a certain type of movement;

6C is a view of a second toothbrush bristle holder shown in FIG. 6 illustrating a bristle holder performing a certain type of movement;

FIG. 6D is a view of a second toothbrush bristle holder shown in FIG. 6 illustrating a bristle holder performing a certain type of movement;

6E is a view of a second toothbrush bristle holder shown in FIG. 6 illustrating a bristle holder performing a certain type of movement;

7A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating a specific mechanism, in a first position, for moving a bristle holder;

FIG. 7B is a schematic view of a preferred embodiment of the toothbrush shown in FIG. 7A illustrating a mechanism in a different position for moving the bristle holder;

Fig. 7C is a schematic sectional view taken along 7C-7C in Fig. 7A;

Fig.7D is a schematic view in section along 7D-7D in Fig.7B;

Fig. 8A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig. 8B is a schematic cross-sectional view along 8B-8B in Fig. 8A;

Fig. 9A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig. 9B is a schematic cross-sectional view along 9B-9B in Fig. 9A;

10A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig. 10B is a partial sectional view of a preferred embodiment of the mechanism shown in Fig. 10A;

10C is a perspective view of a first bristle holder with the mechanism shown in FIGS. 10A and 10B;

10D is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig. 10E is a schematic cross-sectional view of the mechanism shown in Fig. 10D;

11A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

11B is a schematic cross-sectional view of the mechanism shown in FIG. 11A;

11C is a sectional view along 11C in FIG. 11B;

11D is a perspective view of a first bristle holder with the mechanism shown in FIGS. 11A-11C;

11E is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving the bristle holder;

11F is a schematic cross-sectional view of the mechanism shown in FIG. 11E;

11G is a sectional view along 11G in FIG. 11F;

12A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

12B is a schematic sectional view of the mechanism shown in FIG. 12A;

12C is a partial detail view of the first bristle holder and its engagement with the brush head shown in FIGS. 12A-12B;

12D is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

12E is a schematic cross-sectional view of the mechanism shown in FIG. 12D;

13A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

FIG. 13B is a schematic sectional view of the mechanism shown in FIG. 13A;

Fig.13C is a view in section along 13C in Fig.13B;

13D is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig.13E is a schematic view in section of the mechanism shown in Fig.13D;

Fig.13F is a view in section along 13F in Fig.13E;

14A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig.14B is a schematic view in cross section of the mechanism shown in figa;

14C is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig.14D is a schematic view in section of the mechanism shown in figs;

15A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

FIG. 15B is a schematic cross-sectional view of the mechanism shown in FIG. 15A;

Fig. 15C is a cross-sectional view along 15C in Fig. 15B;

Fig.15D is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving the bristle holder;

FIG. 15E is a schematic cross-sectional view of the mechanism shown in FIG. 15D;

Fig.15F is a view in section along 15F in Fig.15E;

16A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig.16B is a schematic view in cross section of the mechanism shown in figa;

Fig. 16C is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig.16D is a schematic view in cross section of the mechanism shown in Fig.16C;

17A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

FIG. 17B is a schematic cross-sectional view of the mechanism shown in FIG.

Fig.17C is a view in section along 17C in Fig.17B;

Fig.17D is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving the bristle holder;

Fig. 17E is a schematic cross-sectional view of the mechanism shown in Fig. 17D;

Fig.17F is a view in section along 17F in Fig.17E;

Fig.17G is a detail view of the second bristle holder and some components of the drive mechanism shown in Fig.17D-17F;

Figa is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving the bristle holder;

Fig. 18B is a schematic cross-sectional view of the mechanism shown in Fig. 18A;

Fig.18C is a view in section along 18C in Fig.18B;

Fig. 18D is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig. 18E is a schematic sectional view of the mechanism shown in Fig. 18D;

Fig. 18F is a cross-sectional view along 18F in Fig. 18E;

Fig. 18G is a detail perspective view of the mechanism shown in Fig. 18D-18F;

19A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

FIG. 19B is a schematic cross-sectional view of the mechanism shown in FIG. 19A;

Fig. 19C is a sectional view along 19C in Fig. 19B;

Fig. 19D is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig. 19E is a schematic sectional view of the mechanism shown in Fig. 19D;

Fig.19F is a view in section along 19F in Fig.19E;

Fig. 19G is a partial detail view of the mechanism shown in Figs. 19D-19F;

20A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Fig. 20B is a schematic cross-sectional view of the mechanism shown in Fig. 20A;

Fig. 20C is a sectional view along 20C in Fig. 20B;

Fig.20D is a partial detail view of the mechanism shown in figa-20C;

21A is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving a bristle holder;

Figv is a schematic view in cross section of the mechanism shown in figa;

Fig.21C is a view in section along 21C in figv;

Figa is a schematic view of a preferred embodiment of a toothbrush according to the invention, illustrating another mechanism for moving the bristle holder;

Fig. 22B is a schematic cross-sectional view of the mechanism shown in Fig. 22A; and

Fig.22C is a view in section along 22C in Fig.22B.

Detailed Description of Preferred Embodiments

As will be understood, the present invention relates to electric toothbrushes, including electric toothbrushes having replaceable head ends, replaceable bristle holders, and also electric toothbrushes with several bristle holders. In particular, the present invention relates to an electric toothbrush with two bristle holders, each of which is driven by an electric motor housed in the body of the toothbrush. As described in more detail here, it is contemplated that two or more electric motors may be used in the toothbrush of the invention.

Specifically, the present invention can be used with electric toothbrushes, brush heads and bristle holders that contain shafts that rotate, vibrate or reciprocate (as well as combinations thereof) to move the first and second bristle holders. In addition, the present invention can be used with electric toothbrushes, brush heads and bristle holders, in which the drive shaft is operatively connected to both the first and second bristle holders, or only one of the bristle holders. In the last example, the bristle holders themselves are connected in such a way that movement is transmitted to the bristle holder not connected directly to the drive shaft.

Before describing various preferred toothbrush options and associated drive mechanisms, it is useful to identify the various types of movements mentioned here. As used here, the term "angular displacement" refers to any angular displacement. "Linear movement" is a movement in a straight line or essentially in a straight line or in the corresponding direction. “Basically linear displacement” is described below. A “curved movement” is a movement that is neither completely linear nor completely angular, but is a combination of them (for example, curved). These movements can be continuous or periodic. Continuous movement refers to movement that does not change direction or path (i.e., is unidirectional). Periodic movement refers to a movement that changes direction or path in the opposite direction or path. A constant angular movement (i.e., moving through 360 degrees or more), which is carried out essentially around the circumference, is referred to as rotation. Periodic angular movement is movement through less than 360 degrees and is referred to as “vibration”. Curvilinear movements can also be either constant (i.e., unidirectional), or periodic (i.e., with a change in direction). Periodic linear displacement is referred to as "reciprocating displacement."

The movements described above can also be carried out along one or more axes of the bristle holder. Accordingly, the movements are described here as one-, two- or three-dimensional movements depending on the number of coordinate axes necessary to describe the position of the bristle holder when moving it. Axes X, Y and Z are depicted in figure 1. One-dimensional movement can be described using a single coordinate (for example, X, Y, or Z coordinates). As a rule, only linear movement can be one-dimensional. For example, a periodic linear displacement essentially only along the Y axis is a one-dimensional displacement (referred to herein as “pulsating displacement”). Two-dimensional movement of the bristle holder requires two coordinates (for example, X and Y coordinates) to describe the path of the bristle holder. Angular displacement carried out in one plane is a two-dimensional displacement. Three-dimensional movement of the bristle holder requires three coordinates (e.g., X, Y, and Z coordinates) to describe the path of the bristle holder. An example of three-dimensional movement is the movement of the bristle holder along a spiral path.

Figure 1 presents a General view of a preferred embodiment of a toothbrush 2 according to the invention. Toothbrush 2 comprises an elongated body 10 having a handle 30, a head 50 and a neck 40 extending between the handle 30 and the head 50. A switch 20 is provided or accessible in the outer region of the housing 10. As will be appreciated, the switch 20 drives an electric motor contained inside the body 10 of the toothbrush 2. An engine (not shown) and a drive mechanism, as described (not shown), provide an electric drive for one or more bristle holders located at the distal end of the toothbrush. Specifically, the toothbrush 2 further comprises a first bristle holder 60 and a second bristle holder 70 located adjacent to the distal (outermost) end 52. As described in more detail here, when the drive mechanism is actuated, the first and second bristle holders make a specific combination of movements. Displacements are best described in terms of the X, Y, and Z axes and the planes that contain these axes.

The X axis is generally referred to herein as a longitudinal axis and extends generally along the longitudinal extent or length (as shown in a plan view of the toothbrush) of the toothbrush head or bristle holder. The longitudinal axis of the head of the toothbrush or bristle holder may coincide with the longitudinal axes of the neck and / or handle of the toothbrush, although this should not happen, for example, when the head of the toothbrush is at an angle either to the neck or to the handle of the toothbrush. For example, the longitudinal axis is the axis passing through the largest length of the head of the toothbrush. The Y axis is perpendicular to the X axis and usually divides the head of the toothbrush into its left and right halves. The Z axis is orthogonal or perpendicular to the X and Y axes.

The X plane contains the X axis and is generally referred to here as the plane of the toothbrush or the plane of the head of the toothbrush. This plane extends generally along the longitudinal extent of the toothbrush or toothbrush head. The Y plane contains the Y axis, extends through the toothbrush, and is perpendicular to the X plane. The Y plane either divides the toothbrush in two, or is parallel to the plane that does it. The Z plane is perpendicular to both the X plane and the Y plane.

In addition, it is advisable to define the terminology used in the description of toothbrushes, bristle holders and various drive mechanisms of the preferred options. As used here, the term "forward" refers to the direction from the handle to the head, while the term "back" refers to the direction from the head to the handle. The longitudinal direction is a direction that generally corresponds to a longitudinal or X axis, but which may not lie in the same plane as the axis. For example, the longitudinal axes of the drive shaft and the bristle holder may not extend in the same plane, but extend generally in the same direction, as viewed from above. Similarly, the neck and head, which are located at an angle to each other, may not have longitudinal axes that extend in the same plane, but have axes that extend in one common longitudinal direction, seen from above. Many options for electric toothbrushes, as a rule, have an elongated head with a longitudinal axis passing through its largest extent. This axis, as a rule, continues in the same general direction as the longitudinal axis of the neck and / or drive shaft of the toothbrush. This axis is generally referred to as the longitudinal axis of the toothbrush. The expression "one (same) general direction" implies a certain angular deviation between the axes. Various references are also made here to the “plane of the toothbrush”. As will be understood, it is typically a plane in which the longitudinal axis of the head of the toothbrush extends.

And, as described here, the first bristle holder is a holder located at the distal end of the toothbrush. The second bristle holder is an adjacent bristle holder located adjacent to or adjacent to and behind the first bristle holder. The third bristle holder is located near the second bristle holder and is located behind the second bristle holder. The fourth bristle holder is located behind the third, and so on.

Typically, toothbrushes of preferred embodiments of the invention comprise an elongated hollow body that includes a powered electric motor and a drive mechanism that is used to bring two or more movable bristle holders. The elongated hollow body also includes an inner chamber for holding one or more batteries for powering the engine. One or more switches are also provided on the outer region of the housing to turn on the motor and drive mechanism. As will be understood, a removable end cap is provided to close the inner chamber and provide sealing against external influences on the components inside the toothbrush body. As described in detail herein, toothbrushes of the preferred embodiments comprise two or more movable bristle holders. Each of the bristle holders performs a specific type of movement, and the resulting combination of movements provides a unique cleaning efficiency.

As noted, electric toothbrushes of the preferred embodiments comprise several bristle holders that are driven by an electric motor and a drive mechanism enclosed in a toothbrush. Preferably, these toothbrushes use two bristle holders, each of which moves other than the other bristle holder. Specifically, there are numerous categories of combinations of movements of two bristle holders that are encompassed by the present invention. Each of these categories includes specific different types of the following combinations of movements.

The first category of combinations of movements of the two bristle holders is one in which the first or farthest (distal) bristle holder moves linearly and the second bristle holder moves in a mainly linear manner. Specifically, this category includes movements when the first bristle holder performs a one-dimensional periodic, that is, repeated, linear movement, in combination with a two- or three-dimensional periodic, mainly linear, movement of the second bristle holder. It will be understood that the expression “mostly linear” refers to movement that takes place in two or three dimensions and is not completely linear in nature. A movement that is substantially linear is a movement that is best described as non-linear, but which occurs substantially along a single axis, line or direction. Thus, basically a linear movement is a movement usually carried out along one line or direction. This movement may include a deviation from a line or direction, but in general it is substantially linear.

This combination of movements can be further defined as including one of the following specific types of movement of the first bristle holder and one of the following specific types of movement of the second bristle holder.

The first bristle holder can reciprocate along a single axis or line in the X plane of the toothbrush head or a plane that is generally parallel to the plane of the toothbrush head and in a direction parallel to the longitudinal axis of the toothbrush head. Or, the first bristle holder may reciprocate along a single axis or line in the X plane of the toothbrush head or a plane generally parallel to the plane of the toothbrush head and in a direction perpendicular to the longitudinal axis of the toothbrush head (and thus the first the bristle holder moves “from side to side”). Alternatively, the first bristle holder may reciprocate along a single axis in the X plane of the toothbrush head or a plane generally parallel to the X plane of the toothbrush head and in a direction other than parallel or perpendicular to the longitudinal axis of the toothbrush head. That is, the first bristle holder can reciprocate along an axis that extends at an acute angle to the longitudinal axis of the toothbrush head. Instead, the first bristle holder can reciprocate along a single axis in a plane perpendicular to the plane X of the toothbrush head (and thus move “up and down” or “pulsating”). In other words, the first bristle holder can move in the direction coinciding with the Y axis of the toothbrush head. Another movement is one in which the first bristle holder can reciprocate along one axis in a plane other than a plane that is parallel or perpendicular to the plane X of the toothbrush head. All these movements of the first bristle holder are one-dimensional or linear.

The second bristle holder may perform a repetitive movement that is substantially linear in the X plane of the toothbrush head or in a plane generally parallel to the X plane of the toothbrush head. Or, the second bristle holder can perform a repetitive movement, which is mostly linear, and occur in a plane perpendicular to the plane X of the toothbrush head (and thus the second bristle holder will perform a “pulsating” type of movement). Or, the second bristle holder may perform a repetitive movement that is generally linear in a plane other than a plane that is parallel or perpendicular to the plane of the head of the toothbrush. Alternatively, the second bristle holder can perform a repetitive movement that is mostly linear and non-planar (that is, this means that the second bristle holder is moved in three dimensions). This movement of the second bristle holder, although unplanar, can be characterized as continuing generally in a plane that: (i) is in the plane of the toothbrush head or in a plane that is generally parallel to the plane of the toothbrush head; (ii) is perpendicular to the plane of the head of the toothbrush; or (iii) is other than the plane of the head of the toothbrush or than the plane perpendicular to it.

It will be appreciated that in this category of movement combinations, any of the above movements of the first bristle holder can be used in combination with any of the above movements of the second bristle holder.

FIG. 2 shows a toothbrush A of a preferred embodiment having a pair of bristle holders as described above. 2A-2I illustrate various combinations of movements of these bristle holders, as described above. Specifically, FIG. 2 shows a toothbrush A of a preferred embodiment comprising a body 110 having a neck 140 and a head 150. In addition, toothbrush A includes a first bristle holder 160 and a second bristle holder 170 located near the distal end 152 of the head 150. The first bristle holder 160 may be configured to move in various ways, as noted above. In particular, referring to FIGS. 2A-2E, these movements are as follows.

As shown in FIG. 2A, the first bristle holder 160 can reciprocate along a single axis or line in the plane of the toothbrush head, such as the X plane shown in FIG. 1, or in a plane that is generally parallel to the plane of the tooth head brushes, and in a direction parallel to the longitudinal axis L of the toothbrush. 2B illustrates another movement in which the first bristle holder 160 reciprocates along a single axis or line in the plane of the toothbrush head or in a plane generally parallel to the plane of the toothbrush head and in a direction perpendicular to the longitudinal axis of the toothbrush. 2B illustrates a first bristle holder 160 moving “side to side”. 2C illustrates a first bristle holder 160 reciprocating along a single axis in the plane of the toothbrush head or in a plane generally parallel to the plane of the toothbrush head and in a direction other than parallel or perpendicular to the longitudinal axis of the toothbrush. That is, FIG. 2C shows a first bristle holder 160 reciprocating along an axis that extends at an acute angle to the longitudinal axis of the toothbrush. FIG. 2D illustrates a first bristle holder 160 reciprocating along a single axis in a plane perpendicular to the plane of the toothbrush head, such as the Y plane shown in FIG. 1 and generally perpendicular to the longitudinal axis of the toothbrush, and thus moving up and down or pulsatingly. 2E shows a first bristle holder 160 moving or reciprocating along one axis in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. All these movements of the first bristle holder 160 are one-dimensional or linear.

2F-2I illustrate the various movements that the second bristle holder 170 can make. FIG. 2F shows a second bristle holder 170 that performs substantially linear motion and is thus non-uniform in the plane of the toothbrush head or in a plane generally parallel to the plane of the toothbrush head. FIG. 2G shows a second bristle holder 170 that performs a repetitive movement that is substantially linear and occurs in a plane that is perpendicular to the plane of the toothbrush head, such as the Y plane shown in FIG. And thus, the second bristle holder 170 makes a movement that resembles a pulsating type of movement. FIG. 2H shows a second bristle holder 170 that performs a repetitive movement that is substantially linear in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. FIG. 2I shows a second bristle holder 170 performing repeated motion that is substantially linear, but non-planar, and therefore three-dimensional.

Toothbrush A of the preferred embodiment may be configured such that the first bristle holder 160 performs any of the movements shown in FIGS. 2A-2E in combination with the second bristle holder 170 that performs any of the movements shown in FIGS. 2F-2I .

On figa-14D shows two mechanisms of the preferred options for providing movements, shown in figa. On figa and 14B shows a mechanism using a rotating or vibrating drive shaft, for example, from a motor or from a drive. On figs and fig.14D shows the drive mechanisms for use in conjunction with a reciprocating movement of the drive shaft of the electric motor. Specifically, FIGS. 14A and 14B show a toothbrush Q of a preferred embodiment having a body 1810, a neck 1840 and a head 1850. Along the head 1850 is a first bristle holder 1860 and a second bristle holder 1870. The housing 1810 encloses a rotating or vibrating drive shaft 1820 having a distal end 1822. The gear 1830 is engaged or otherwise attached to the distal end 1822 of the shaft 1820. The gear 1830 forms a channel 1832, within which a tracking or guide element 1866 is positioned. First bristle holder 1860 contains the base 1862, the plate 1864 and the tracking element 1866, continuing from the plate 1864. The base can be made in one piece and not use the mentioned plate. Accordingly, the base would comprise a tracking or guiding element. The tracking element 1866 is typically located in the channel 1832 of the gear 1830. The head 1850 forms a guide channel or an elongated hole 1854 along the outwardly facing surface of the head 1850. When the drive shaft 1820 rotates or vibrates, the gear 1830 moves in a similar manner. When the gear 1830 rotates or vibrates, the tracking element 1866 moves linearly when it moves in the channel 1832. Thus, the plate 1864 and the base 1862 of the first bristle holder 1860 are laterally displaced in the head 1850. This, in turn, drives the first holder 1860 bristles. A guide channel 1854 formed along the outwardly facing surface of the head 1850 further guides the movements of the first bristle holder 1860.

14C and 14D show a toothbrush R of a preferred embodiment of the invention. Toothbrush R moves as shown in FIG. 2A. 14C and 14D, toothbrush R includes a housing 1910 comprising a neck 1940 and a head 1950. Along the head 1950, a distal or first bristle holder 1960 and a second bristle holder 1970 are arranged. The housing 1910 encloses a reciprocating shaft 1924 having a distal end 1926. The first bristle holder 1960 comprises a base component 1962, a plate 1964 and a holding member 1966 located along the lower side of the plate 1964. The distal end 1926 of the shaft 1924 is engaged with the holding member 1966. Along the outwardly facing surface of the head 1950, a guide channel or an elongated hole 1954 is formed. The base is positioned and positioned on the head for movement. The base is positioned above the guide channel. The base may be a unitary structure and not use a separate holding element. During operation or reciprocating movement of the shaft 1924, the first bristle holder 1960 is linearly displaced by moving the holding member 1966, the plate 1964, and the base 1962. The guide channel 1954 provides or facilitates linear movement in the desired direction.

On figa-8B shows a mechanism for implementing the movement shown in figv. As noted above, this movement is a side-to-side movement of the first bristle holder. The mechanism of FIGS. 8A-8B is described in more detail below.

On figa-15F shows two mechanisms for implementing the movement shown in figs. On figa-15C shows a mechanism for moving using a rotating or vibrating drive shaft. 15D-15F show a mechanism for effecting marked movement by using a reciprocating shaft. Specifically, FIGS. 15A-15C illustrate a preferred toothbrush S having a body 2010, a neck 2040 and a head 2050. Along the head 2050 are a distal, or first, bristle holder 2060 and a second bristle holder 2070. The distal, or first, bristle holder 2060 is located near the distal end 2052 of the head 2050. The housing 2010 includes a rotating or vibrating drive shaft 2020 having a distal end 2022. The gear 2030 is engaged or otherwise attached to the distal end 2022 of the shaft 2020. The gear 2030 comprises channel 2032, within which a tracking element is located, described below. The first bristle holder 2060 comprises a base 2062 and a downward tracking or guiding element 2064. As noted above with reference to FIGS. 12A-12C, the base may be unitary in design and not use a separate plate. As noted, the tracking element 2064 is held or otherwise located in the channel 2032 of the gear 2030. The head 2050 includes an inclined surface 2056 along which a guide channel or an elongated hole 2054 is formed. During operation, when the shaft 2020 vibrates or rotates, the gear 2030 also moves similarly way. This, in turn, causes a linear displacement of the base 2062 using a tracking element 2064 moving in the channel 2032. The linear displacement of the base 2062, in turn, causes a linear displacement of the first bristle holder 2060. The vertical component of this movement is transmitted to the bristle holder 2060 by an inclined surface 2056. An additional change in the direction of translational movement of the first bristle holder 2060 is provided by the orientation of the guide channel 2054.

FIGS. 15D-15F show a preferred embodiment of the drive mechanism for performing the movement shown in FIG. 2C using a reciprocating shaft of an electric motor. 15D-15F, the toothbrush T of the preferred embodiment has a body 2110 comprising a neck 2140 and a head 2150. Along the head 2150 are a first bristle holder 2160 and a second bristle holder 2170. The first bristle holder 2160 is located near the distal end 2152 of the head 2150. The housing includes a reciprocating drive shaft 2124 having a distal end 2126. The first bristle holder 2160 includes a base 2162 and a holding member 2164. The holding member 2164 is engaged or otherwise attached to the distal end 2126 of the shaft 2124. Alternatively, the connecting element 2176 can be used to connect or engage the distal end 2126 of the shaft 2124 with the holding element 2164. The head 2150 contains an inclined over awn 2156 in which it is formed a guide channel or elongated opening 2154. The base is positioned and disposed on the head movably. The base is positioned above the guide channel. The base may have a unitary structure and not use a separate retaining element. During operation, the shaft 2124 reciprocates and causes a linear displacement of the base 2162 by the interaction of the holding member 2164 and the distal end 2126 of the shaft 2124. The vertical component of the movement is transmitted to the first holder of the bristles 2160 using an inclined surface 2156. In addition, the desired direction of translational movement the first bristle holder 2160 is provided using the guide channel 2154 or, more precisely, due to its orientation along the outward facing surface of the heads and 2150.

On figa-7D shows a mechanism for implementing the movement shown in fig.2D. As noted, this movement represents the movement of the first bristle holder in a "pulsating" manner. The mechanism of FIGS. 7A-7D is described in more detail below.

On figa-11G shows two preferred mechanisms for implementing the movement shown in figa. 11A-11D show a mechanism driven by a rotating or vibrating drive shaft. 11E-11G show a mechanism driven by a reciprocating shaft. Specifically, FIGS. 11A-11D illustrate a toothbrush K of a preferred embodiment having a housing 1210 comprising a neck 1240 and a head 1250. Along the head 1250 are a distal, or first, bristle holder 1260 and a second bristle holder 1270. The first bristle holder 1260 is located near the distal end 1252 of the head 1250. The housing 1210 encloses a drive shaft 1220 having an axis 1222 offset from the axis. The first bristle holder 1260 has a base 1262 with an outward extending arm 1264 that forms a receiving channel 1266. Located on some the distance from the axis, the end 1222 of the shaft 1220 is generally located in the receiving channel 1266 of the base 1262 of the first bristle holder 1260 and is engaged with it. When the shaft 1220 rotates, its end 1222 offset from the axis causes lateral displacement of the first bristle holder 1260. Specifically, the resulting movement of the first bristle holder is perpendicular to the longitudinal axis of the head of the toothbrush 1250. A space 1276 is provided in the head 1250 to allow movement of the first bristle holder 1260. It will be understood that when the shaft 1220 rotates, the first bristle holder 1260 is laterally displaced from side to side. Movement in a direction oriented at a certain angle to the plane of the toothbrush head can be achieved by providing an inclined surface 1254 along the outwardly facing surface of the head 1250. This is best shown in FIG. 11C. Thus, when the shaft 1220 rotates, side-to-side movement of the bristle holder 1260 is transmitted further along the inclined surface 1254. Preferably, the base is positioned and movably disposed on the head and in contact with the inclined surface.

FIGS. 11E-11G show a second mechanism for effecting movement corresponding to that shown in FIG. 2E. Specifically, FIGS. 11E-11G illustrate a toothbrush L of a preferred embodiment having a body 1310 comprising a neck 1340 and a head 1350. A first bristle holder 1360 is located near the distal end 1352 of the head 1350. A second bristle holder 1370 is also provided behind the first bristle holder 1360. The housing 1310 encloses a reciprocating shaft 1324 having an end 1326 offset from the axis. The first bristle holder 1360 comprises a base 1362 having a downwardly extending lever 1364 that forms a receiving channel 1366. Offset from the axis the end 1326 of the shaft 1324 is located generally in the channel 1366 and engaged with it. The head 1350 forms an upward inclined surface 1351. Preferably, the base is positioned and positioned to move on the head and in contact with the inclined surface. During operation, when the shaft 1324 makes a reciprocating movement, the first bristle holder 1360 performs a translational or reciprocal movement along the head 1350 and in a direction parallel to the inclined surface 1351.

On figa-16D shows the mechanisms for implementing the movement shown in fig.2F. Figa and 16B show a mechanism using a rotating or vibrating drive shaft to perform the specified movement. Figs. 16C and 16D illustrate a mechanism using a reciprocating drive shaft to effect a marked movement. Specifically, FIGS. 16A and 16B illustrate a toothbrush U of a preferred embodiment having a body 2210 comprising a neck 2240 and a head 2250. Along the head 2250 is a distal, or first, bristle holder 2260 and a second bristle holder 2270. A first bristle holder 2260 is located near the distal end 2252 of the head 2250. The housing 2210 includes a rotating or vibrating drive shaft 2220 having a distal end 2222. The gear 2230 is engaged or otherwise attached to the distal end 2222 of the shaft 2220. The gear 2230 forms a channel 2232 along its outer surface. The second bristle holder 2270 comprises a base 2272 and a plate 2274 having a downwardly extending tracking or guide element 2276. The base is movably disposed on the head and positioned relative to the head. The tracking element 2276 is located or otherwise engaged in the channel 2232 of the gear 2230. The head 2250 comprises a guide channel or an elongated hole 2254 formed along its upwardly facing surface generally below the second bristle holder 2270. During operation, the shaft 2220 rotates or vibrates, causing similar movements of the gear 2230. When the gear 2230 undergoes this movement, the tracking element 2276 is linearly displaced in the channel 2232. The linear displacement of the tracking element 2276 causes a similar linear displacement of the plate 2274 and the base 2272 of the second bristle holder 2270. A guide channel 2254 formed along the head 2250 provides an additional component to the movement of the second bristle holder 2270. 16A, since the guide channel 2254 is curved, the translational movement of the second bristle holder 2270 is the same.

FIGS. 16C and 16D show the mechanism of another preferred embodiment used to perform the movement shown in FIG. 2F by using a reciprocating shaft. 16C and 16D show a toothbrush V of a preferred embodiment having a body 2310, a neck 2340 and a head 2350. Along the head 2350 is a distal, or first, bristle holder 2360 and a second bristle holder 2370. The second bristle holder has a base 2372 and a plate 2374 having a downwardly extending guide element 2376. The base is movably mounted on the head and positioned relative to the head. The guide element 2376 is fixed or otherwise engaged with the connecting element 2332, which extends from the fitting 2330 attached to the distal end 2326 of the shaft 2324. The head 2350 defines a guide channel or an elongated hole 2354 generally below the second bristle holder 2370. The guide channel gives the specific desired translational path to the second bristle holder 2370. During operation, the shaft 2324 performs a reciprocating movement, thereby causing a linear displacement of the fitting 2330. The fitting 2330 imparts this movement to the plate 2374 and the base 2372 of the second bristle holder 2370. This reciprocating movement is further modified by the orientation and shape of the guide channel 2354 formed in the head 2350.

On figa-20D shows a mechanism for implementing the movement shown in fig.2G. Specifically, these figures show an AC toothbrush of a preferred embodiment having a housing 3010 comprising a neck 3040 and a head 3050. Inside the head 3050 there are several internal guide elements 3054. These guide elements 3054 form one or more cam holes 3056. In addition, the brush AC comprises a first bristle holder 3060 and a second bristle holder 3070. A first bristle holder 3060 is located near the distal end 3052 of the AC brush head 3050. The housing 3010 generally comprises a reciprocating shaft 3024 having a distal end 3026. The second bristle holder 3070 includes a base 3072 and a downwardly extending member 3074. The base is positioned and movably disposed on the head. Several elements 3076 protrude laterally outward from the downwardly extending member 3074. A drive protrusion 3078 is located in the lowermost region of the downwardly extending member 3074. The coupling assembly, preferably in the form of a joint 3080, allows the distal end 3026 of the reciprocating shaft 3024 to interact with the downwardly extending member 3074 second bristle holder 3070. Specifically, the connector 3080 is engaged with the distal end 3026 of the shaft 3024 and forms an engagement hole 3082. The drive protrusion 3078 of the downwardly extending member 3074 extends into the hole 3082 to engage the connector 3080, and is generally engaged with it. During operation, when the reciprocating shaft 3024 reciprocates in the neck 3040 of the housing 3010, this movement is transmitted to the connector 3080. The connector 3080 is in turn engaged with the second bristle holder 3070 and generally engages this component in a similar manner. The hole 3056, or rather its orientation, further directs and modifies the movement of the second bristle holder 3070. Laterally extending members 3076 of the downwardly extending member 3074 generally receive an opening 3056.

On figa-17G shows two mechanisms used to implement the movement shown in fig.2H. Specifically, FIGS. 17A-17C show a mechanism used to effect a noted movement by rotating or reciprocating a shaft. 17D-17G illustrate a mechanism used to effect a marked movement from a reciprocating shaft of an electric motor. Specifically, FIGS. 17A-17C show a toothbrush W of a preferred embodiment having a body 2410 including a neck 2440 and a head 2450. Along the head 2450 are a distal, or first, bristle holder 2460 and a second bristle holder 2470. A first bristle carrier 2460 is located near or behind the distal end 2452 of the head 2450. The housing 2410 encloses a rotating shaft 2420. The shaft 2420 has a distal end 2422 with which gear 2430 is engaged. Gear 2430 forms a channel 2432. The second bristle holder 2470 comprises a base 2472 and a plate 2474. The base is movably positioned on the head and positioned relative to the head . The guide element 2476 continues downward from the plate 2474. It is understood that the base may be a unitary structure and not use a separate plate. That is, the base itself can provide a downwardly extending guide element. The guide element 2476 extends into the channel 2432, formed by gear 2430. The head 2450 comprises an inclined surface 2456 generally under the second bristle holder 2470 and, in addition, forms a guide channel or an elongated hole 2454. During operation, the rotating or vibrating shaft 2420 transmits such movement to the helical 2430. This element, in turn, causes a linear displacement of the plate 2474 and the base 2472 of the second bristle holder 2470. A vertical displacement component is provided by an inclined surface 2456 formed along the head 2450. Additional curvature or other displacement component is given by the orientation of the guide channel 2454.

On fig.17D-17G shows another mechanism of a preferred embodiment used to implement the movement shown in fig.2H. This drive mechanism uses a reciprocating shaft to drive the second bristle holder. Specifically, FIGS. 17D-17G illustrate a toothbrush X of a preferred embodiment, comprising a body 2510 having a neck 2540 and head 2550. Along the head 2550 are a distal, or first, bristle holder 2560 and a second bristle holder 2570. The second bristle holder includes a base 2572 and a plate 2574 having a downwardly extending guide member 2576. The base is positioned and movably disposed on the head. The base may be unitary and not use a separate plate. That is, the base may comprise a downwardly extending guide element. The head 2550 comprises an inclined surface 2556 and a guide channel or an elongated hole 2554 formed along its upwardly facing surface generally below the second bristle holder 2570. The fitting 2530 is engaged or otherwise connected to the shaft 2524. The fitting comprises a connecting member 2532 extending from it. The connecting member 2532 is received and generally engaged by a guide member 2576 extending from the plate 2574 of the second bristle holder 2570. As shown in FIG. 17G, it is preferred that the base 2572 is engaged with the plate 2574 by one or more downwardly extending protrusions 2573 which are received and arranged in the holes 2575 formed in the plate 2574. During operation, the shaft 2524 reciprocates and causes a similar reciprocating movement of the fitting 2530. The fitting, in turn, linearly moves the plate 2574 and the base 2572 of the second bristle holder 2570. The vertical displacement component is obtained using an inclined surface 2556. Additional displacement or change of path is obtained using the guide channel 2554.

The movement mechanism shown in FIG. 2I is described below. This movement is the movement of the second bristle holder, making a repeated movement, which is mainly linear, however, non-planar and, therefore, three-dimensional. 22A-22C illustrate an exemplary mechanism.

Another category of combinations of movements of the two bristle holders is the category in which the first bristle holder performs two-dimensional periodic movement, which is mainly linear, in combination with two- or three-dimensional periodic movement of the second bristle holder, which is also mainly linear.

The first bristle holder can make any type of repetitive movement that is mostly linear and occurs in the plane of the toothbrush head or in a plane generally parallel to the plane of the toothbrush head. Or, the first bristle holder can make a repeated movement, which is mostly linear and occurs in a plane perpendicular to the plane of the head of the toothbrush (and thus makes a "pulsating" movement). Or, the first bristle holder can make a repeated movement that is mostly linear in a plane other than a plane that is parallel or perpendicular to the plane of the head of the toothbrush. Instead, the first bristle holder can make repeated movements that are mostly linear and unplanar. This movement of the first bristle holder, although unplanar and thus three-dimensional, can be characterized as continuing generally in a plane that: (i) is in the plane of the head of the toothbrush or in a plane that is generally parallel to it; (ii) is perpendicular to the plane of the head of the toothbrush; or (iii) is other than the plane of the head of the toothbrush or than the plane perpendicular to it.

The second bristle holder can make a repeated movement, which is mainly linear and occurs in the plane of the head of the toothbrush or in a plane generally parallel to the plane of the head of the toothbrush. Or, the second bristle holder can make a repeated movement, which is mainly linear and occurs in a plane perpendicular to the plane of the toothbrush head (and, thus, performs a "pulsating" type of movement). Alternatively, the second bristle holder can make a repeated movement that is mostly linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. Or, the second bristle holder can make repeated movements that are mostly linear and unplanar. This movement of the second bristle holder, although unplanar and thus three-dimensional, can be described as continuing mainly in a plane that: (i) is in the plane of the head of the toothbrush or a plane parallel to it; (ii) is perpendicular to the plane of the head of the toothbrush; or (iii) is other than the plane of the head of the toothbrush or than the plane perpendicular to it.

It will be appreciated that in this category of movement combinations, any of the movements of the first bristle holder can be used in combination with any movement of the second bristle holder.

Figure 3 is a front view of another toothbrush of a preferred embodiment of the invention and with the combinations of movements of the bristle holders described above. Figure 3 shows a toothbrush B having a housing 210 with a neck 240 and a head 250. On the head 250 are a first bristle holder 260 and a second bristle holder 270. A first bristle holder 260 is located near the distal end 252 of the head 250. The first bristle holder 260 and the second toothbrush bristle holder 270 of the preferred embodiment B is configured to perform different types of specific movements as follows.

3A-3D illustrate various types of movements that the first bristle holder 260 can make. FIG. 3A shows a first bristle holder 260 that performs a movement that is substantially linear and occurs in the plane of the toothbrush head or in a plane that is generally parallel to the plane of the toothbrush head. FIG. 3B shows a first bristle holder 260 that performs a repetitive movement that is substantially linear and occurs in a plane perpendicular to the plane of the head of the toothbrush, such as the Y plane shown in FIG. And thus, FIG. 3B illustrates the pulsating type movement described here. 3C illustrates another movement of the first bristle holder 260, which is substantially linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. 3D illustrates yet another movement of the first bristle holder 260 in which it makes a repeated movement that is mainly linear and unplanar, and thus three-dimensional.

3E-3H illustrate additional types of movements that the second bristle holder 270 of the toothbrush B of the preferred embodiment can perform. Specifically, FIG. 3E illustrates the repetitive movement that the second bristle holder 270 can make and which is mostly linear and occurs in the plane of the toothbrush head or in a plane generally parallel to the plane of the toothbrush head. FIG. 3F shows a second bristle holder that performs a repetitive movement that is substantially linear and occurs in a plane perpendicular to the plane of the head of the toothbrush, such as the Y plane shown in FIG. 1, and thus a pulsating movement is effected. 3G illustrates a second bristle holder 270 that performs a repetitive movement that is mostly linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. FIG. 3H illustrates a second bristle holder 270 undergoing repeated movement that is substantially linear and non-planar. This movement of the bristle holder 270 is three-dimensional.

The toothbrush of the preferred embodiment may be configured such that the first bristle holder 260 will perform any of the movements shown in FIGS. 3A-3E in combination with the second bristle holder 270 making any of the movements shown in FIGS. 3E-3H.

12A-12E show two mechanisms of a preferred embodiment for performing the movement shown in FIG. 3A. Specifically, FIGS. 12A-12C illustrate a mechanism for effecting this movement by using a rotating or vibrating motor shaft. 12D-12E illustrate a mechanism for performing this movement using a reciprocating shaft. Specifically, FIGS. 12A-12C illustrate a toothbrush M of a preferred embodiment having a body 1410, a neck 1440 and a head 1450. Along the head 1450 are a distal, or first, bristle holder 1460 and a second bristle holder 1470. The housing 1410 encloses a rotating shaft 1420 having a distal end 1422, or is a shell for it. A gear 1430 is engaged along the distal end 1422. The gear 1430 defines a channel 1432. The distal (first) bristle holder comprises a base 1462, a holder plate 1463 and a tracking or guide element 1464 extending from the holder plate 1463. The gear 1430 engaged with the distal end 1422 of the shaft 1420 is positioned so that it is located generally below or below the plate 1463 of the first bristle holder 1460. Specifically, the tracking element 1464 of the holder plate 1463 is located in the channel 1432 formed by the gear 1430. It is understood that the base can be a unitary component and comprise an integral tracking or guiding element without the holder plate 1463. When the shaft 1420 rotates or vibrates, the tracking element 1464 linearly displaces as it moves through the channel 1432 formed along the gear 1430. The linear displacement of the tracking element 1464 causes a linear displacement of the holder plate 1463 and thus of the base 1462. When the base 1462 makes a linear, reciprocal - translational movement along the end or head 1450 of the toothbrush M, the first bristle holder 1450 performs translational movement. A guide channel or an elongated hole 1454 formed along an upwardly directed surface of the head 1450 further modifies the movement of the first bristle holder 1460. Thus, depending on the shape or configuration of the guide channel 1454, the first bristle holder 1460 can move in a curved manner or along any desired path.

12D-12E shows the mechanism of a preferred embodiment for moving, shown in FIG. 3, based on a reciprocating moving motor shaft 1524. 12D-12E shows a preferred toothbrush N having a housing 1510, a neck 1540 and a head 1550. Along the head 1550 are a distal, or first, bristle holder 1560 and a second bristle holder 1570. The housing 1510 includes a reciprocating a shaft 1524 having an end biased from the axis 1526. The first bristle holder 1560 has a base 1562 with a retaining or guiding element 1564 extending downward. The base is positioned and positioned on the head for movement. The holding member 1564 is engaged with one or more secondary guiding members 1566 that extend from the base 1562. The guiding member 1566 extends through a guide channel or an elongated hole 1554 formed in the upwardly facing surface of the head 1550. It will be appreciated that the base may be a unitary structure and do not use a separate retaining element 1564. That is, the base itself may comprise an outwardly extending guide element protruding through the opening 1 554 formed in the head. When moving or reciprocating the shaft 1524, the holding member 1564, which is engaged with the axis 1526 of the shaft 1524, is linearly displaced in the head 1550. The linear displacement of the holding member 1564 causes a linear displacement of the base 1562, since one or more of the guiding elements 1566 are engaged with a holding member 1564. The shape of the guide channel 1554 formed along the head 1550 further modifies or affects the travel path of the first bristle holder 1560.

FIGS. 19A-19G show two mechanisms of a preferred embodiment for providing the movement shown in FIG. 3B. On figa-19C shows a mechanism that uses a rotating or vibrating shaft of an electric motor to implement the marked movement. On fig.19D-19G shows a mechanism for implementing such a movement using a reciprocating shaft. Specifically, FIGS. 19A-19C show a toothbrush AA of a preferred embodiment having a body 2810, a neck 2840 and a head 2850. Along the head 2850 are a first distal bristle holder 2860 and a second bristle holder 2870. The first bristle holder 2860 is located near the distal end 2852 of the head 2850. The housing 2810 is a shell of a rotating or vibrating shaft 2820 having a distal end 2822, or encloses it. At the distal end 2822, a gear 2830 forming a channel 2832 is engaged with the shaft. The first bristle holder 2860 comprises a base 2862 and a downwardly extending member 2866. The base is positioned and positioned on the head to be movable. Several elements 2864 extend laterally outward from the downwardly extending member 2866. Inside the head 2850 comprises one or more inner guide members 2854 that form an inner guide or cam hole 2856. One or more laterally extending members 2864 preferably extend into the guide or cam hole 2856, formed in the guiding elements 2854, and are sent to them. A connecting assembly comprising a connecting member 2880 and a connector 2888 allows the gear 2830 to interact with the downwardly extending member 2866 of the first bristle holder 2860. Specifically, the connecting member 2880 includes a pusher 2882, which is received by the channel 2832 of the gear 2830. The connecting member 2880 also includes an opposite pull member 2884 located opposite the push rod 2882. The connector 2888 is engaged with the pull member 2884 of the connecting member 2880. And, as shown in the drawing, the connector 2888 is engaged with the downwardly extending member 2866 of the first bristle holder 2860. During operation, when the shaft 2820 rotates or vibrates, the gear 2830 does the same. The channel 2832 transmits reciprocating movement to the connecting member 2880 and the connector 2888. It, in turn, transfers this movement to the downwardly extending member 2866 of the first bristle holder 2860. A guide hole 2856 formed in the inner region of the head 2850 further controls the movement of the first bristle holder 2860.

On fig.19D-19G shows another mechanism of the preferred option for moving, shown in figv, from the reciprocating shaft. Specifically, these figures show a toothbrush AB of a preferred embodiment having a body 2910 comprising a neck 2940 and a head 2950. Along the head 2950 are a distal, or first, bristle holder 2960 and a second bristle holder 2970. The first bristle holder 2960 is located and adjacent to the distal end 2952 of the head 2950. The housing 2910 encloses a reciprocating shaft 2924 having a distal end 2926. The first bristle holder 2960 includes a base 2962 having a downwardly extending member 2966. The base is positioned and movable on the head. Several elements 2964 extend laterally from the downwardly extending member 2966. Several internal guide members 2954 are formed in the head 2950. These internal guide members form a cam hole 2956 to guide the movement of the first bristle holder 2960. Specifically, one or more laterally extending members 2964 extend into and engage with the hole 2956. The connector assembly, preferably in the form of a connector 2980, allows the distal end of the reciprocating shaft 2924 to interact with the downwardly extending member 2966. One end of the connector 2980 is attached to the engaging hole 2968 formed in the downwardly extending member 2966. During operation of the reciprocating movement of the shaft 2924, the connector 2980, and thus the downwardly extending member 2966 of the first bristle holder 2960, reciprocate in the head 2950. This movement e is further modified by the shape of the hole 2956 formed in the guide elements 2954.

FIGS. 13A-13F show two mechanisms of the preferred embodiment for providing the movement shown in FIG. 3C. 13A-13C show a drive mechanism for providing such movement based on a rotating or vibrating shaft. On fig.13D-13F shows a mechanism for implementing the marked movement from the reciprocating moving shaft of the motor. Specifically, FIGS. 13A-13C show a preferred toothbrush O having a housing 1610, a neck 1640 and a head 1650. Along the head 1650 are a distal, or first, bristle holder 1660 and a second bristle holder 1670. A first bristle holder 1660 is located near the distal end 1652 of the head 1650. The housing 1610 encloses a rotating or vibrating shaft 1620 having a distal end 1622. Gear 1630 is engaged or otherwise fixed on the distal end 1622 of the shaft 1620. The gear 1630 forms a channel 1632 adapted to receiving tracking or guiding element 1666 described here in more detail. The first bristle holder 1660 comprises a base 1662 and a plate 1664 engaged with the base 1662. A tracking or guide element 1666 extends from the bottom of the plate 1664. As noted, the tracking element 1666 receives the channel 1632 of the gear 1630 and generally engages it. As noted above, in connection with FIGS. 12A-12C, the base may be a unitary component and not use a separate plate. Also, an inclined surface 1654 is provided along the upwardly facing surface of the head 1650. When the shaft 1620 rotates or vibrates, the gear 1630 rotates or vibrates in a similar manner. This movement causes a linear displacement of the tracking element 1666 and thus the plate 1664. This, in turn, causes a linear displacement of the base 1662 of the first bristle holder 1660. An inclined surface 1654 formed along an upwardly facing surface of the head 1650 imparts a vertical component to the movement of the first bristle holder 1660. The formation of a guide channel or an elongated hole 1656 may give additional various characteristics to the movement of the bristle holder 1660. For example, if the guide channel 1656 is curved or curved, the corresponding travel path of the first bristle holder 1660 will be the same.

13D-13F show a toothbrush P of a preferred embodiment of the invention. Toothbrush P of a preferred embodiment comprises a drive mechanism using a reciprocating moving motor shaft to provide movement, shown in FIG. 3C, of the first bristle holder. Toothbrush P comprises a housing 1710 having a neck 1740 and a head 1750. Along the head 1750 are a first or distal bristle holder 1760 and a second bristle holder 1770. The housing 1710 includes a reciprocating shaft 1724 having a distal end 1726. The first bristle holder 1760 comprises a base 1762 and a plate 1764. The plate contains a fitting 1766 with which the distal end 1726 of the shaft 1724 engages. It is understood that the base may have a unitary structure and thus do not use a separate plate. The upwardly facing surface of the head 1750 forms an inclined surface 1754 and, in addition, forms a guide channel or an elongated hole 1756, which can have almost any desired shape. The base is positioned and located on the head with the ability to move. The base is positioned above the guide channel 1756. The guide channel 1756 is shown in these figures as having a curved shape. With the movement or reciprocating movement of the shaft 1724, the fitting 1766 and thus the plate 1764 are linearly displaced in the head 1750 of the toothbrush P. Moving the plate 1764 in turn causes a linear displacement of the base 1762 and, thus, the bristle holder 1760. The inclined surface 1754 with the profile imparts a vertical component to the movement of the first bristle holder 1760, and the shape of the guide channel 1756 further modifies the travel path of the first bristle holder 1760.

The movement mechanism shown in FIG. 3D is described below. This movement is a repeated movement of the first bristle holder, which is mainly linear and unplanar and thus three-dimensional. 21A-21C illustrate an exemplary mechanism.

The above-described FIGS. 16A-16D illustrate mechanisms for performing the movement shown in FIG. 3E. This movement of the second bristle holder is generally linear in the plane of the head of the toothbrush or in a plane that is generally parallel to it.

The above-described FIGS. 20A-20D illustrate mechanisms for performing the movement shown in FIG. 3F. This movement is a repeated movement of the second bristle holder, which occurs mainly linearly in a plane perpendicular to the plane of the toothbrush head, and thus is a pulsating movement.

The above-described FIGS. 17A-17G illustrate mechanisms for performing the movement shown in FIG. This movement of the second bristle holder is a repetitive movement that occurs mainly linearly in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head.

The movement mechanism shown in FIG. 3H is described below. This movement of the second bristle holder is a repetitive movement occurring mainly linearly and unplanarly. This movement is three-dimensional. 22A-22C illustrate an exemplary mechanism.

Another category of combinations of movements of two bristle holders is a category in which the first bristle holder performs three-dimensional periodic mainly linear motion in combination with two- or three-dimensional periodic, mainly linear motion of the second bristle holder.

The first bristle holder can make repeated movements that are mostly linear and unplanar. The movement of the first bristle holder, although unplanar and thus three-dimensional, can be characterized as continuing generally in a plane that: (i) is in the plane of the head of the toothbrush or in a plane parallel to it; (ii) is perpendicular to the plane of the head of the toothbrush; or (iii) is other than the plane of the head of the toothbrush or than the plane perpendicular to the plane of the head of the toothbrush.

The second bristle holder can perform repeated movement, which is mainly linear in the plane of the head of the toothbrush or in a plane generally parallel to it. Or, the second bristle holder can make a repeated movement, which is mainly linear in a plane perpendicular to the plane of the toothbrush head (and, thus, make a "pulsating" type of movement). Or, the second bristle holder can make a repeated movement that is mostly linear in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. Or, the second bristle holder can make repeated movements that are mostly linear and unplanar. This movement of the second bristle holder, although unplanar and therefore three-dimensional, can be described as continuing mainly in a plane that: (i) is in the plane of the head of the toothbrush or in a plane parallel to it; (ii) is perpendicular to the plane of the head of the toothbrush; or (iii) is other than the plane of the head of the toothbrush or than the plane perpendicular to it.

Any of the movements of the first bristle holder can be used in combination with any of the movements of the second bristle holder.

Figure 4 shows another toothbrush C of a preferred embodiment of the invention, providing the above combinations of movements of the bristle holders. Toothbrush C comprises a body 310 having a neck 340 and a head 350. In general, a first bristle holder 360 and a second bristle holder 370 are disposed on the head 350. The first bristle holder 360 is located near the distal end 352 of the head 350. The first bristle holder 360 and the second bristle holder 370 can perform various movements and combinations thereof as follows.

FIG. 4A shows a first bristle holder 360 performing repeated movement that is substantially linear and non-planar. In other words, the first bristle holder 360 performs mainly linear and three-dimensional movement.

4B-4E illustrate the movement of the second bristle holder 370. FIG. 4B shows a second bristle holder 370 that performs a repetitive movement that is generally linear and occurs in the plane of the head of the toothbrush or in a plane generally parallel to it. FIG. 4C shows a second bristle holder 370 that performs a repetitive movement that is generally linear and occurs in a plane perpendicular to the plane of the toothbrush head, such as the Y plane shown in FIG. 1. 4C illustrates this movement resembling a pulsating type of movement. FIG. 4D shows a second bristle holder 370 that makes a repeated move that is mostly linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the head of the toothbrush C. FIG. 4E shows a second bristle holder 370 that makes a repeat a movement that is mostly linear and unplanar and thus is three-dimensional.

Toothbrush C of the preferred embodiment may be configured such that the first bristle holder 360 will move as shown in FIG. 4A in combination with the second bristle holder 370 that performs any of the movements shown in FIGS. 4B-4E.

The mechanism for effecting the movement shown in FIG. 4A is described below. This is the movement of the first bristle holder making a repeated movement that is mostly linear and unplanar. That is, such a movement is three-dimensional. 21A-21C show an exemplary mechanism.

The above-described FIGS. 16A-16D illustrate mechanisms for performing the movement shown in FIG. 4B. This is the movement of the second bristle holder, making a repeated movement, which is mainly linear and occurs in the plane of the head of the toothbrush or in a plane generally parallel to it.

The above-described FIGS. 20A-20D illustrate mechanisms for performing the movement shown in FIG. 4C. This is the movement of the second bristle holder making a repeated movement, which is mainly linear and occurs in a plane generally perpendicular to the plane of the toothbrush head, and thus corresponds to a pulsating type of movement.

Figa-17g illustrate mechanisms for implementing the movement shown in fig.4D. This is the movement of the second bristle holder, making a repeated movement, which is mainly linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head.

The movement mechanism shown in FIG. 4E is described below. This is the movement of the second bristle holder, making a repeated movement, which is mainly linear and unplanar and, thus, three-dimensional. Figa-22g illustrate an exemplary mechanism.

In addition, another category of movement combinations includes curvilinear movement of the first bristle holder in combination with movement in two or three dimensions of the second bristle holder. Specifically, in this category of movements, the first bristle holder performs two-dimensional periodic curvilinear movement in combination with two- or three-dimensional periodic, mostly linear, movement of the second bristle holder.

The first bristle holder can make repeated curvilinear movement in the plane of the head of the toothbrush or in a plane parallel to the plane of the head of the toothbrush. Or, the first bristle holder can make repeated curvilinear movement in a plane perpendicular to the plane of the toothbrush head. Or, the first bristle holder can make repeated curvilinear movement in a plane other than the plane of the head of the toothbrush or a plane perpendicular to it.

The second bristle holder can make a repeated movement, which is mainly linear and occurs in the plane of the head of the toothbrush or in a plane parallel to it. Or, the second bristle holder can make a repeated movement, which is mainly linear and occurs in a plane perpendicular to the plane of the head of the toothbrush (and, thus, make a "pulsating" type of movement). Or, the second bristle holder can make a repeated movement that is mostly linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. Or, the second bristle holder can make repeated movements that are mostly linear and unplanar. The movement of the second bristle holder, although unplanar and therefore three-dimensional, can be characterized as continuing mainly in a plane that: (i) is in the plane of the head of the toothbrush or in a plane parallel to it; (ii) is perpendicular to the plane of the head of the toothbrush; or (iii) is other than the plane of the head of the toothbrush or than the plane perpendicular to it.

As noted above, any combination of movements of the first bristle holder and the second bristle holder are possible, and all of them together.

Figure 5 shows another toothbrush D of a preferred embodiment of the invention, providing the above combinations of movements of the bristle holders. Toothbrush D comprises a housing 410 having a neck 440 and a head 450. A first bristle holder 460 and a second bristle holder 470 are disposed on the head 450. The first bristle holder 460 is located near the distal end 452 of the toothbrush D. The first bristle holder 460 and the second bristle holder 470 of the toothbrush D can make various movements as follows.

5A-5C show the specific movements that the first bristle holder 460 can make. Specifically, FIG. 5A shows a first bristle holder 460 that makes repeated curvilinear movement in the plane of the toothbrush head or in a plane parallel to the plane of the toothbrush head. FIG. 5B shows a first bristle holder 460 that performs repeated curvilinear movement in a plane perpendicular to the plane of the toothbrush head, such as the Y plane shown in FIG. 1. FIG. 5C shows a first bristle holder 460 that performs repeated curvilinear movement in a plane other than the plane of the toothbrush head or a plane perpendicular to it.

5D-5G illustrate various movements that the second bristle holder 470 can make. Specifically, in FIG. 5D, a second bristle holder 470 is shown to perform a repeated movement that is substantially linear in the plane of the toothbrush head or in a plane parallel to it. FIG. 5E shows a second bristle holder 470 that performs a repetitive movement that is generally linear in a plane perpendicular to the plane of the toothbrush head, such as the Y plane shown in FIG. 1. FIG. 5E shows a movement of a second bristle holder 470 coinciding with a movement of a pulsating type, as described herein, or the like. FIG. 5F illustrates a second bristle holder 470 that performs a repetitive movement that is mostly linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. 5G illustrates a second bristle holder 470 performing three-dimensional movement.

The toothbrush D of the preferred embodiment may be configured such that the first bristle holder 460 will move as shown in any of FIGS. 5A-5C, in combination with the second bristle holder 470 that makes the movement shown in any of FIGS. 5D-5G.

The above-described FIGS. 12A-12E illustrate mechanisms for performing the movement shown in FIG. 5A. This is the movement of the first bristle holder making repeated curvilinear movement in the plane of the head of the toothbrush or in a plane parallel to it.

10A-10E show two mechanisms of a preferred embodiment used to effect a repeated curvilinear movement of the first bristle holder in a plane perpendicular to the plane of the toothbrush head, as shown in FIG. 5B. Specifically, FIGS. 10A-10C show a mechanism for providing such movement based on a rotating or vibrating drive shaft. 10D-10E shows a mechanism for providing such movement from a reciprocating moving drive shaft. 10A-10C show a toothbrush I of a preferred embodiment having a body 1010 that includes a neck 1040 and a head 1050. Along the head 1050 are a first or distal bristle holder 1060 and a second bristle holder 1070. It is understood that the first bristle holder 1060 is located near the distal end 1052 of head 1050. Toothbrush housing 1010 I includes a rotating or vibrating drive shaft 1020. The shaft 1020 has an axis 1022 offset from the axis. The first bristle holder 1060 comprises a hinged base 1062 having two lateral laterals but the hinge element 1064. Preferably, the base is pivotally attached to the head and positioned relative to the head. The base 1062 also includes an ongoing laterally receiving channel 1066, which is oriented to receive the shaft 1020 offset from the axis 1022 of the end 1022. The base 1062 is positioned in the head 1050 so that the hinge elements 1064 are each received by an opening 1054 formed on the sides of the head 1050. Offset from the axis the end 1022 of the shaft 1020 is located and generally engaged with the receiving channel 1066 of the base 1062 of the bristle holder 1060. One or more gaps 1080 are provided around the periphery of the first bristle holder 1060 to allow movement of the bristle holder 1060. During operation, when the shaft 1020 rotates or vibrates, changing the relative position of the axis 1022 offset from the axis causes the bristle holder 1060 to move around the hinge elements 1064.

10D-10E shows the mechanism of a preferred embodiment for providing repetitive curvilinear movement in a plane perpendicular to the plane of the toothbrush head, as shown in FIG. 5B, using a shaft reciprocating. Specifically, these drawings show a toothbrush J of a preferred embodiment having a body 1110 having a neck 1140 and a head 1150. Along the head 1150 are a distal, or first, bristle holder 1160 and a second bristle holder 1170. The housing 1110 is a shell of a reciprocating moving shaft 1124 or encloses it. The shaft 1124 comprises an end 1126 offset from the axis. The first bristle holder 1160 comprises a base 1166 having a lever 1162 that extends downward from the base 1166 into the interior of the head 1150. Preferably, the base is pivotally attached to the head and positioned relative to the head. Two laterally extending hinge elements 1164 are also provided, each of which is engaged with an opening 1154 formed in the head 1150. The first bristle holder 1160 is generally positioned adjacent to or adjacent to the distal end 1152 of the head 1150. During operation, and thus with the reciprocating movement of the shaft 1124, the base 1166 of the first bristle holder 1160 rotates around the hinge elements 1164.

On figa-18G shows a preferred mechanism for implementing the movement shown in figs. Specifically, FIGS. 18A-18C show a mechanism that enables such movement using a rotating or vibrating shaft. On Fig.18D-18G shows a preferred mechanism for performing such a movement using a shaft that performs reciprocating movements. In particular, FIGS. 18A-18C show a toothbrush Y of a preferred embodiment having a body 2610 having a neck 2640 and a head 2650. Along the distal end of the head 2650 are a first, distal, bristle holder 2660 and a second bristle holder 2670 located adjacent to him. The housing 2610 is a sheath or otherwise encloses a rotating or vibrating shaft 2620 having a distal end 2622 to which a gear 2630 is attached. A curved and indented receiving region or surface 2656 is formed along the upwardly facing surface of the head 2650. An elongated hole 2654 is formed in the curved receiving surface 2656 and along it. The distal, or first, bristle holder 2660 is located generally inside the curved receiving surface 2656. The first bristle holder 2660 comprises a base 2662 having a downwardly extending guide member 2664 that extends through the aperture 2654. A coupling 2680 provides interaction between the gear 2630 and the guiding member 2664 the first bristle holder 2660 and connects them. Specifically, the connecting unit 2680 includes a pusher 2684, which receives the channel 2632 of the gear 2630. At the opposite end of the connecting node 2680, a receiving channel 2682 is located. The receiving channel 2682 receives and engages a guide member 2664 of the base 2662 of the first bristle holder 2660. When the shaft 2620 rotates or vibrates, gear 2630 rotates or vibrates in a similar manner. The orientation of the channel 2632 causes a linear displacement of the connector 2680. Moving the receiving channel 2682 similarly drives the guide member 2664 of the first bristle holder 2660. The orientation and shape of the hole 2654 formed along the head 2650 further gives the desired movement to the first bristle holder 2660.

FIGS. 18D-18G show the mechanism of a preferred embodiment for providing the movement shown in FIG. 5C using a shaft reciprocating. Specifically, FIGS. 18D-18G show a toothbrush Z of a preferred embodiment having a body 2710 with a neck 2740 and a head 2750. Along the head 2750 are a first bristle holder 2760 and a second bristle holder 2770. The first bristle holder 2760 is located at or adjacent to the distal end 2752 of the head 2750. The housing 2710 is a shell for a reciprocating shaft 2724 having a distal end 2726 or encloses it. The first bristle holder 2760 comprises a base 2762 with one or more fastening elements 2765. The head 2750 contains a depressed receiving region or surface 2756, within which an elongated hole 2754 is formed. The marked fastening elements 2765 extend through the hole 2754 and are engaged with the guide element 2766. The head 2750 also includes a connector 2780 having a first end 2782 and an opposite second end 2784. The first end 2782 is engaged with the distal end 2726 of the shaft 2724. The second end of the connector 2780 contains a receiving channel L 2786, which is engaged with the guide member 2766. The base is positioned and disposed on the head movably. The base is positioned above the guide channel. The base may have a unitary structure and not use a separate retaining element. During operation, when the shaft 2724 is reciprocating, it is transmitted to the connector 2780. Then, the reciprocating movement is transmitted to the guide element 2766 due to its engagement with the receiving channel 2786 of the connector 2780. This movement is further modified by the shape and orientation of the hole 2754 formed in the receiving the surface 2756 of the head 2750. Accordingly, the first bristle holder 2760 carries out the movement in the form of a marked movement.

The above-described FIGS. 16A-16D illustrate mechanisms for performing the movement shown in FIG. This is the movement of the second bristle holder, making a repeated movement, which is mainly linear in the plane of the head of the toothbrush or in a plane parallel to it.

The above described figa-20D show the mechanisms for implementing the movement shown in figa. This is the movement of the second bristle holder, reminiscent of a pulsating motion or identical to it.

The above-described FIGS. 17A-17G show mechanisms for effecting the movement shown in FIG. 5F. This is a movement of a second bristle holder making a repeated movement that is mostly linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head.

The mechanism for moving in FIG. 5G is described below. This is the movement of the second bristle holder that performs three-dimensional movement. 22A-22C illustrate an exemplary mechanism.

Another category of combinations of movements of two bristle holders is one in which the first bristle holder performs three-dimensional periodic curvilinear movement in combination with two- or three-dimensional periodic mainly linear motion of the second bristle holder.

The first bristle holder can make repeated movements that are curved in nature and unplanar. The movement of the first bristle holder, although unplanar and thus three-dimensional, can be characterized as continuing generally in a plane that: (i) is in the plane of the head of the toothbrush or in a plane parallel to it; (ii) is perpendicular to the plane of the head of the toothbrush; or (iii) is other than the plane of the head of the toothbrush or than the plane perpendicular to it.

The second bristle holder can make a repeated movement, which is mainly linear and occurs in the plane of the head of the toothbrush or in a plane generally parallel to the plane of the head of the toothbrush. The second bristle holder can make a repeated movement, which is mainly linear and occurs in a plane perpendicular to the plane of the head of the toothbrush (and, thus, is a movement of the "pulsating" type). Or, the second bristle holder can make a repeated movement that is mostly linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. Alternatively, the second bristle holder can make a repeated movement that is mostly linear and unplanar (therefore, this movement of the second bristle holder is three-dimensional). This movement of the second bristle holder, although unplanar, can be characterized as continuing mainly in a plane that: (i) is in the plane of the head of the toothbrush or in a plane parallel to it; (ii) is perpendicular to the plane of the head of the toothbrush; or (iii) is other than the plane of the head of the toothbrush or than the plane perpendicular to it.

Again, any combination of movements for the first bristle holder and the second bristle holder is contemplated, and all of them together.

FIG. 6 is a front view of a portion of the head of a toothbrush E of a preferred embodiment of the invention, providing for the above-described combinations of movements of the bristle holder. Toothbrush E comprises a body 510 having a neck 540 and a head 550. On the head 550, a first bristle holder 560 and a second bristle holder 570 are disposed. The first bristle holder 560 is positioned or located near the distal end 552 of the head 550. As explained here, the first bristle holder 560 and the second bristle holder 570 can perform various movements as follows.

6A shows a first bristle holder 560 that performs a repetitive movement that is curved in nature and non-planar. That is, the movement of the first bristle holder 560 is three-dimensional. FIG. 6B shows a second bristle holder 570 that performs a repetitive movement that is generally linear and occurs in the plane of the toothbrush head or in a plane generally parallel to the plane of the toothbrush head. FIG. 6C shows a second bristle holder 570 that performs a repetitive movement that is mostly linear and occurs in a plane perpendicular to the plane of the head of the toothbrush, such as the Y plane shown in FIG. Those. FIG. 6C shows a second bristle holder 570 that performs a movement that resembles a pulsating motion, as described herein. FIG. 6D shows a second bristle holder 570 that performs a repetitive movement that is generally linear in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head. And FIG. 6E shows a second bristle holder 570 performing three-dimensional movement.

Toothbrush E of the preferred embodiment can be configured such that the first bristle holder 560 performs the movement shown in FIG. 6A in combination with the second bristle holder 570 that performs any of the types of movements shown in FIGS. 6B-6E.

The movement mechanism shown in FIG. 6A is described below. This is the movement of the first bristle holder making a repeated movement that is curved in nature and non-planar. That is, such a movement is three-dimensional. 21A-21C show an exemplary mechanism.

The above-described FIGS. 16A-16D illustrate mechanisms for performing the movement shown in FIG. 6B. This is the movement of the second bristle holder, making a repeated movement, which is mainly linear and occurs in the plane of the head of the toothbrush or in a plane parallel to it.

The above-described FIGS. 20A-20D illustrate mechanisms for performing the movement shown in FIG. 6C. This is the movement of the second bristle holder, making a repeated movement, which is mainly linear and occurs in a plane that is perpendicular to the plane of the toothbrush head.

The above-described FIGS. 17A-17G illustrate mechanisms for performing the movement shown in FIG. 6D. This is a movement of a second bristle holder making a repeated movement that is mostly linear and occurs in a plane other than a plane that is parallel or perpendicular to the plane of the toothbrush head.

The movement mechanism shown in FIG. 6E is described below. This is the movement of the second bristle holder that performs three-dimensional movement.

Specifically, a preferred structure and arrangement of movable and electrically powered bristle holders is as follows. The second bristle holder is adjacent to the first bristle holder. Although it is desirable to position the second bristle holder directly adjacent to the first bristle holder, a gap may also be provided between the first and second bristle holders. In addition, the gap between the first and second bristle holders may be filled with stationary bristles that extend from a fixed or stationary third bristle holder (not shown) that forms part of the end of the toothbrush. In addition, although the first bristle holder is described as adjacent to the distal end of the toothbrush, it is contemplated that the second bristle holder may be adjacent to the distal end of the toothbrush and be moved in the same manner as described herein.

Although embodiments of the present invention are shown for simplicity with bristles extending in a direction substantially perpendicular to the longitudinal axis and surface of the bristle holders, it is contemplated that the bristles may be spaced apart to supplement or further enhance the movements of the first and / or second bristle holders. That is, some or all of the bristles can extend in a direction that forms an acute angle with the surface of the bristle holder, and extend toward or away from the handle. In another embodiment, some bristles may extend outward from the head, in a different direction, again, forming an acute angle to the surface of the bristle holder. Massage bristles or bristles of various lengths may also be used, as described in US Design Patents No. Des. 330,286, Des. 434563, the contents of which are incorporated into this description by reference. Other preferred bristle arrangements suitable for use include those described in whole or in part in US Pat. Nos. 6,006,394, 4,081,876, 5,062,213, 5,335,389, 5,392,483, 5,446,940, 4,894,880 and in International Publication No. WO 99/23910, the contents of which are incorporated herein by reference.

Many drive mechanisms can be used in the toothbrushes of the preferred options described here. As noted, drive mechanisms that provide rotation output, or reciprocating movement, or angular vibrations (vibration) with an electric drive, are preferred. For example, US Patent Nos. 5617603, 5850603, 5974615, 6032313, 5504959, 5524312, 5625916, 5732432, 5070567, 5170525, 5416942, 3588936, 5867856 and 4397055, the contents of which are incorporated herein by reference, describe another engine and systems rotating or vibrating drive shafts that might be suitable for use. In addition, the drive mechanisms described in US Ser. No. 10/027594, filed December 21, 2001, and in US application US Ser. No. 09/993167, filed November 6, 2001, which are both incorporated herein by reference. In addition to this, any or all aspects of US patents Nos. 5617601 and 5435032, which are both incorporated by reference herein, can be used in the toothbrushes described herein.

A preferred mechanism for effecting a pulsating type of movement, or referring to FIG. 1, movement in the Y plane, is shown in FIGS. 7A-7D. This mechanism converts a rotational movement, for example, at the output of an electric motor, into a reciprocating linear or substantially linear movement in a direction perpendicular to the plane of the head of the toothbrush. 7A and 7B show a partial view of a toothbrush F of a preferred embodiment. The drawings show a bristle holder 660 and a second bristle holder 670 located along the head 650, near the neck 640. Inside the neck 640, a portion of the drive mechanism comprising the rotating shaft 602 extends. It is understood that the shaft 602 is driven or is a drive shaft of an electric motor (not shown) located in the body or in the handle of the toothbrush. The drive mechanism also comprises a crank part 606 that is offset from the longitudinal axis of the shaft 602. The shaft 602 is rotatably mounted on the distal end of the toothbrush F, on a support 604.

As will be appreciated, either of the first or second bristle holders 660 and 670, or both of them, can be moved using the mechanism shown in FIGS. 7A-7D. However, for the purposes of this discussion, these drawings show only the first bristle holder 660 driven. A plate 610 is provided along the base or bottom side of the bristle holder 660. The plate 610 is connected to the crank portion 606 by a connecting member 608. FIG. 7A shows this mechanism in one of the positions in which the first bristle holder 660 is directed outward and generally from the head 650, and FIG. 7B shows a different position in which the bristle holder 660 is directed toward or partially retracted into the head 650. 7C and 7D are cross-sectional views detailing the mechanism and its positions relative to the bristle holder 660. FIG. 7C is a cross-sectional view of a head 650 along line 7C-7C in FIG. 7A. Fig. 7C shows the orientation of the crank portion 606 and the base 610 when the first bristle holder 660 extends outward from the head 650 of the toothbrush F. Fig. 7D is also a cross-sectional view, however, taken along line 7D-7D in Fig. 7B. FIG. 7D shows the orientation of the crank portion 606 and base 610 when the bristle holder 660 is directed toward the head 650. It may be desirable to create a guide member 648 that extends along the plate 610 to create a channel in which the plate 610 and the bristle holder 660 can make reciprocating movement, with the rotation of the shaft 602.

Another preferred mechanism for moving one or more bristle holders described by US Ser. No. 60/361625, filed March 4, 2002, is incorporated into this description by reference. This mechanism tells the bristle holder to move “side to side”. Referring to FIG. 1, such a movement causes either or both bristle holders 60 and 70 to reciprocate in the plane of the toothbrush head, for example in the X plane, or in a plane parallel to it, and in a direction generally perpendicular to the longitudinal axis a toothbrush.

Specifically, an exemplary drive mechanism for performing side-to-side movement is as follows. On figa and 8B shows a toothbrush G of the preferred embodiment. The first bristle holder 760 is movably mounted in the grooves 702 in the bristle holder 750 and is notified of reciprocating or lateral movement in the grooves 702 using a cam 755 contained on the drive shaft 745. The cam 755 may include a tide of the appropriate shape placed on top of it or cast and rigidly attached to the shaft 745. For example, the tide is in the form of an eccentric cam. Alternatively, the cam profile may use one or more bends of straight, curved, or other types. The first follower 734 and the second follower 736 extend, each, from the bottom surface of the first bristle holder 760. These followers can, for example, be offset from the longitudinal axis L of the first bristle holder and grasp or lock the cam 755. When the motor (not shown) rotates the shaft 745 in accordance with arrow C, the cam 755 makes contact with the surface 744 of the first follower 734 , drives it and therefore moves the first bristle holder 760 away from the first side 751 and towards the second side 753 of the bristle holder 750, along the transverse axis 782 of the first bristle holder 760. As the shaft 745 continues to rotate, the cam 755 is detached from the first follow-up element 734. Then, the cam 755 makes contact with the surface 746 of the second follow-up element 736, drives the second follow-up element 736 and with it the first bristle holder 760 towards the first side 751 and draws it away from the second side 753 of the bristle holder 750. Between the first and second bristle holders 760, 770, a free space 765 is provided to allow such movement. When the forward-backward movement or “side-to-side” is repeated (when the shaft 745 continues to rotate), a swinging movement is performed that provides an improved cleaning effect on the teeth in the direction of arrow B in FIG. 8B.

Referring to FIGS. 9A and 9B, in another version of the toothbrush G, referred to herein as toothbrush H, the second bristle holder 870 is movably mounted in slots 802, in the bristle holder 850, and separately driven in a reciprocating or lateral movement to the grooves 802 by means of a cam 806 contained on the drive shaft 808. The cam 806 may comprise a tide of a suitable shape located on top or cast and rigidly attached to the shaft 808, as in the above embodiment of the toothbrush G. The first 810 and second 812 followers extend from the lower surface of the second bristle holder 870. The followers may, for example, be offset from the longitudinal axis L of the second bristle holder 870 and may grasp or grasp the cam 806. When the motor (not shown) rotates the shaft 808, the cam 806 comes into contact with the surface 814 of the first follower element 810 and withdraws it and with it, a second bristle holder 870 from the first side 820 and towards the second side 826 along an axis perpendicular to the longitudinal axis L. When the shaft 808 continues to rotate, the cam 806 is detached from the first follower element 810. Then, the cam 806 makes contact with the surface 816 of the second follower element 812 and guides the second pusher 812 and with it the second bristle holder 870 towards the first side 820, moving them away from the second side 826 of the bristle holder part 850. When this back-to-back or side-to-side movement is repeated (when the shaft 808 continues to rotate), the desired oscillating movement in the direction of arrow B is created.

As noted previously, the first bristle holder can move in three directions. Specifically, this movement is shown in FIGS. 3D, 4A and 6A. The second bristle holder can also perform three-dimensional movement, shown in Fig.2I, 3H, 4E, 5G and 6E. Some of the various mechanisms described herein may be modified to communicate such movement to the bristle holder. For example, the brush head shown in FIGS. 20A-20D having inner guide elements 3054 that form a cam hole 3056 may have an upwardly elongated hole formed in the brush head, such as a hole 1554 shown, for example, in FIG. 12D . The repeated movement made by the bristle holder through or along these holes will be unplanar and three-dimensional. The exact path desired for the bristle holder can be obtained by appropriately selecting the shape and orientation of each of the holes, that is, the upwardly facing hole formed along the outer surface of the brush head and the cam hole formed inside the brush head. It is also contemplated that other components or aspects of the mechanisms and toothbrushes described herein may be combined to create a mechanism or drive mechanism adapted to communicate three-dimensional movement to the bristle holder.

On figa-21C shows a toothbrush AD of the preferred embodiment, comprising a housing 3110 having a neck 3140 and a head 3150, which generally includes a reciprocating drive shaft 3124. On the head 3150 are the first bristle holder 3160, adjacent to the end 3152 heads 3150, and a second bristle holder 3170. The first bristle holder 3160 is located on a movable base 3162 that includes a protruding member 3174 extending into a hollow region defined within the head 3150. The protruding member 3174 includes several laterally extending guides 3176 located in the cam hole 3156 formed in the hollow inner region of the head 3150. The protruding element 3174 is engaged with the distal end 3126 of the drive shaft 3124 using the connecting unit 3180. When reciprocating the shaft 3124, the connecting unit 3180, protruding element 3174, base 3162 and the first bristle holder 3160 are shifted. The travel path of the first bristle holder 3160 is three-dimensional.

On figa-22C shows a toothbrush AE of the preferred embodiment, comprising a housing 3210 having a neck 3240 and a head 3250 with the most distal end 3252. The housing 3210 as a whole contains a reciprocating moving drive shaft 3224. On the head 3250 are the first holder 3260 bristles and a second holder 3270 bristles. Specifically, a second bristle holder 3270 is located on a movable base 3272 that includes a lever 3278 that extends into the hollow interior of the housing 3210, a neck 3240 or a head 3250. The lever 3278 contains one or more laterally extending guide elements 3276 located and engaged in one or more cam holes 3256 provided in said hollow inner region. The lever 3278 of the base 3272 is engaged with the distal end 3226 of the drive shaft 3224 using the connecting node 3280, as described above. Preferably, the head 3250 forms one or more elongated holes 3215 formed along its outer surface. Parts of the base 3272, such as the lever 3278, preferably extend through the holes 3215. When the shaft 3224 is reciprocated, the connecting unit 3280, the lever 3278, the base 3272 and the second bristle holder 3270 are displaced. Most preferably, the movement of the second bristle holder 3270 is controlled by the shape and orientation of the holes 3256 and 3215. The resulting movement of the second bristle holder is three-dimensional.

Many different mechanisms can be used to provide the above movements. These mechanisms can use a rotating or vibrating shaft or linearly reciprocating shaft as a drive. In general, various repetitive periodic movements are provided using systems of articulated elements and connecting units that have certain predetermined degrees of freedom. Accordingly, the rotational or reciprocating movement of the shaft with the electric drive can be converted into linear, mainly linear, curvilinear or three-dimensional movement by the specific selection and configuration of the components forming the drive mechanism. In addition, guide channels may be provided along the head or area of the toothbrush body near or within the bristle holder (s) to facilitate or direct the movement of the bristle holder (s).

In addition, it is understood that any of the mechanisms or drive mechanisms described or shown here may be combined with any of the other mechanisms or drive mechanisms described herein. And also parts of any of these mechanisms can be combined with parts of any other mechanism described here. It is also contemplated that a toothbrush, as described herein, may use two of the drive mechanisms described herein so that each drive mechanism serves as a drive for a particular bristle holder. Accordingly, two electric motors can also be used, one for each drive mechanism.

The present invention is described with reference to specific embodiments. When reading and understanding the present description, someone will have modifications and changes. For example, although certain cams are described as containing bends on the drive shaft and other cams are described as containing beads of a corresponding shape fixed to the drive shaft, the cams are not limited to the proposed shape. In fact, bends can be replaced by beads, and beads can be replaced by bends, and other shapes, sizes and configurations can be used. In addition, it is contemplated that any of the features or features of any of the A-AE toothbrushes may be combined or used in conjunction with any of the other features or features of any of the A-AE toothbrushes. It is intended that all such modifications and changes be covered by the invention as they fall within the scope of the appended claims or their equivalents.

Claims (12)

1. Toothbrush with an electric drive, containing a handle on one end of a toothbrush having an engine located therein, a head on the other end of the toothbrush, the head having a longitudinal axis and having a first bristle holder with a plurality of bristle tufts, the engine being operatively connected to the first a bristle holder for moving the first bristle holder along the first axis, and the engine is connected to the first bristle holder for moving the first bristle holder around the second axis. 2. The toothbrush according to claim 1, in which the movement of the first bristle holder along the first axis and around the second axis is simultaneous. 3. Toothbrush according to any preceding paragraph, in which the movement of the first bristle holder is unplanar. 4. A toothbrush according to any preceding claim, wherein the movement of the first bristle holder is substantially parallel to the longitudinal axis. 5. A toothbrush according to any preceding claim, wherein the movement of the first bristle holder is substantially transverse to the longitudinal axis. 6. A toothbrush according to any preceding claim, further comprising a second bristle holder. 7. The toothbrush according to claim 6, in which the second bristle holder is operatively connected to the engine. 8. Toothbrush according to any preceding paragraph, in which the first axis and the second axis are not parallel to each other. 9. Toothbrush according to any preceding paragraph, in which the first bristle holder moves in an arcuate manner. 10. A toothbrush according to any preceding claim, further comprising a rotating or vibrating shaft. 11. Toothbrush according to any one of claims 1 to 10, in which the first bristle holder periodically rotates around the first axis. 12. Toothbrush according to any one of claims 1 to 10, in which the first bristle holder periodically vibrates around the second axis.

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