WO2010018147A1 - Applicator - Google Patents
Applicator Download PDFInfo
- Publication number
- WO2010018147A1 WO2010018147A1 PCT/EP2009/060323 EP2009060323W WO2010018147A1 WO 2010018147 A1 WO2010018147 A1 WO 2010018147A1 EP 2009060323 W EP2009060323 W EP 2009060323W WO 2010018147 A1 WO2010018147 A1 WO 2010018147A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- applicator
- reservoir
- fluid
- seal
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
- A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
- A45D34/042—Appliances specially adapted for applying liquid, e.g. using roller or ball using a brush or the like
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/0072—Details
- A46B11/0079—Arrangements for preventing undesired leakage or dispensing
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1046—Brush used for applying cosmetics
Definitions
- the applicator 1 includes a cap 44.
- the cap 44 and reservoir 2 each include coupling portions 46 which include corresponding male and female screw threads which permit the cap 44 to be releasably coupled to the reservoir 2 in a coupled position (as shown) . In the coupled position the cap 44 substantially encloses the applicator head 4.
- a user begins with the applicator 101 in the closed configuration as shown in Figure 2.
- the applicator 101 is retained in the closed position by, for example, a cap 44 which is removed before use.
- the valve 6 is closed and fluid from the reservoir is prevented from entering the fluid flow channel 14 and thus cannot reach the applicator tip 10. This means that, in the closed configuration, the fluid in the reservoir 2 cannot leak from the applicator tip 10, even if the reservoir 2, which may be deformable, is squeezed to provide a driving pressure to the fluid.
- the seal 8 remains in contact with both the first and second surfaces 24,30 to form a seal which substantially prevents fluid from the reservoir from leaving between the applicator head 4 and the reservoir 2. This means that the fluid can only exit the applicator 101 via the fluid flow channel 14 and pass onto the applicator tip 10 for application to a surface 50, in this case the exposed surface of the human nail.
- the applicator 101 is arranged such that the fluid from the reservoir can be forced towards the applicator tip 10 by squeezing the reservoir 2.
- the applicator tip 10 is arranged so that it is lower than the reservoir 2 and the reservoir is squeezed so that fluid passes from the reservoir 2, through the flow channel 14 and onto the applicator tip 10 from which it can be applied to the surface 50.
Landscapes
- Coating Apparatus (AREA)
Abstract
The invention provides an applicator for applying a fluid to a surface. The applicator comprises a reservoir, an applicator head, a valve and a seal. The valve is arranged to permit fluid to flow from the reservoir into the applicator head when open and substantially prevent such flow when closed. The applicator is movable between an open configuration in which the valve is open and a closed configuration in which the valve is closed. The seal substantially prevents unwanted leakage of fluid from the applicator from between the reservoir and the applicator head. The seal is also resiliently deformable and arranged such that it is compressed when the applicator is in the closed configuration and such that the compressed seal resiliently biases the applicator towards the open configuration.
Description
Applicator
The invention relates to an applicator for applying a fluid to a surface and more particularly to an applicator for applying a pharmaceutical or cosmetic product to a surface of a human nail.
The application of substances used in the care or treatment of nails is typically achieved using a brush and container arrangement. The brush is dipped into a container of the substance to be applied and the brush is then used to λpaint' the substance onto a nail. This process can be difficult to perform as it relies on good dexterity. The process can lead to drying out of the substance if the container is unsealed for a prolonged period and it can be difficult to accurately apply the substance as may be required for a pharmaceutical treatment regimen.
WO 01/95759 discloses an accessory for nail care which has a reservoir for a substance to be applied to a nail, an applicator for the substance and includes channels for conveying the substance from the reservoir to the applicator. The reservoir may be compressible to force substance from the reservoir to the applicator. However, it can still be difficult to accurately dispense substance using such a device.
The invention provides an applicator for applying a fluid to a surface, the applicator comprising a reservoir, an applicator head, a valve and a seal, the valve being arranged to permit fluid to flow from the reservoir into the applicator head when open and substantially to prevent such flow when closed, the applicator being
movable between an open configuration in which the valve is open and a closed configuration in which the valve is closed, the seal substantially preventing unwanted leakage of fluid from the applicator from between the reservoir and the applicator head, the seal also being resiliently deformable and arranged such that it is compressed when the applicator is in the closed configuration and such that the compressed seal resiliently biases the applicator towards the open configuration.
The invention therefore provides an applicator in which a seal has dual functionality. The seal functions as a seal to prevent unwanted fluid leaks from the applicator, and also as a resilient biasing means for biasing the applicator to an open configuration in which a valve within the applicator is open and fluid can flow between the reservoir and the applicator head. This arrangement reduces manufacturing complexity and reduces parts count in the applicator while adding functionality.
By including a valve within the applicator that substantially prevents fluid flow from the reservoir to the applicator head leakage of the fluid from the reservoir though the applicator head can be reduced or substantially avoided. This is particularly relevant for low viscosity fluids which may flow unintended from the applicator head along the intended delivery path as low viscosity fluids flow more freely than high viscosity fluids. This is particularly the case if the applicator is held in an orientation with the applicator head below the reservoir.
In one embodiment of the applicator the seal is a resiliently deformable λO' ring. The λO' ring may be made of a rubber material, which may be natural or synthetic. This sort of seal is a single component and is typically easy to source, however, it should be understood that the seal may be a resiliently deformable plastic moulding, or a composite part which demonstrates the dual sealing and biasing function.
The applicator head may include an applicator tip from which fluid can be transferred to a surface. The applicator tip may comprise a brush, a porous element, such as a sponge, paddle or other means of applying a fluid to a surface. The applicator tip may be adapted to apply fluid to a surface of a human nail. It should be understood that the term fluid is used herein to encompass any flowable substance that may be applied to a surface by an applicator. In particular the term fluid is intended to include liquids, in particular fluids that comprise a pharmaceutical product.
The applicator head may include at least one flow channel through which fluid from the reservoir must pass to reach the applicator tip. The flow channel may include an entry port and an exit port with the exit port being in fluid communication with the applicator tip and the entry port being in fluid communication with the reservoir only when the valve is open. The flow channel may be a conduit formed through the applicator head. A plurality of entry ports may lead to a single exit port, or one entry port may lead to a plurality of exit ports. The flow channel may include a flow restriction through which the fluid must flow to reach the applicator tip. The flow restriction may comprise a sinter, the pores of which are
large enough to allow the fluid to pass through the sinter, but which provides resistance to the fluid flow. A sinter is considered particularly suitable for fluids of low viscosity. In a different embodiment, the flow restriction may comprise a membrane or filter, the pores of which are large enough to allow the fluid to pass through the membrane, but which provides resistance to the fluid flow.
The applicator head may be movably coupled to the reservoir with the seal arranged between the applicator head and the reservoir. The applicator head may be movable along a first axis with respect to the reservoir such that the applicator head can move towards or away from the reservoir. The seal can be arranged such that it is located between the applicator head and the reservoir and is compressed when the applicator is in the closed configuration and such that the compressed seal resiliently biases the applicator head away from the reservoir and thus biases the applicator to the open configuration. The seal may substantially surround a portion of the reservoir adjacent a reservoir outlet. The applicator head may also be located adjacent the outlet of the reservoir.
The valve may comprise a first valve portion and a second valve portion. The first valve portion can be located on the reservoir and positioned at or adjacent the reservoir outlet and the second valve portion can be located on the applicator head. The applicator may be arranged such that movement of the applicator head relative to the reservoir moves the valve portions into and out of contact. The valve being closed when the valve portions are in contact and open when the valve portions are not
in contact. The second valve portion may comprise a protrusion that, in the closed position, extends into the reservoir outlet and blocks said outlet preventing fluid from flowing from the reservoir.
The reservoir may include a first circumferential surface adjacent the outlet and the applicator head may include a second circumferential surface with the seal being arranged between the first and second surfaces. Such an arrangement facilitates the location of the seal and can provide dedicated surfaces with which the seal can contact to form a seal and on which the compressed seal can exert a biasing force.
The applicator head may include a substantially cylindrical skirt which substantially surrounds a portion of the reservoir. The skirt and reservoir can each include clip portions that co-operate to limit the movement of the applicator head away from the reservoir along a first axis. This can permit a snap-fit arrangement for the applicator head and reservoir during manufacture and provides a simple mechanism by which the applicator head can be allowed to move relative to the reservoir along the first axis, but with the clip portions co-operating to limit movement of the applicator head away from the reservoir. Such an arrangement can be used to substantially trap the seal between the applicator head and the reservoir. The movement of the applicator head can therefore be constrained to be between a position in which the clip portions limit the movement away from the reservoir and the contact of the valve portions limit movement of the applicator head toward the reservoir. Such movement may be limited such
that the applicator is substantially only able to move along a biasing axis.
The applicator may include a cap. The cap and reservoir can each include coupling portions which the cap to be releasably coupled to the reservoir in a coupled position in which the cap substantially encloses the applicator head. Such an arrangement can help to prevent drying out of fluid, by evaporation for example, which is retained in the applicator head, or on the applicator tip.
The coupling portions may be corresponding male and female screw threads which allow the cap to the screwed onto the reservoir. In an alternative embodiment the coupling portions may co-operate to provide a bayonet type coupling. In a further alternative embodiment the coupling portions may cooperate to provide a snap-fit type coupling.
The applicator could be arranged such that when the cap is in the coupled position the cap and applicator head are in contact. In such an arrangement the cap can apply a retaining force to the applicator head, which overcomes the biasing force provided by the compressed seal and therefore is able to retain the applicator head in a position adjacent the reservoir in which the valve is closed, thus the applicator is retained in the closed configuration. The closed configuration can be employed by a user when the applicator is not in use and also, for example, during transport or delivery of the applicator.
The reservoir may contain a fluid and said fluid may comprise a pharmaceutically active component.
It should be understood that throughout this specification and in the claims that follow, unless the context requires otherwise, the word "comprise", or variations such as "comprises" or "comprising", implies the inclusion of the stated integer or step, or group of integers or steps.
The invention will now be further described, by way of example only, with reference to the following drawings in which:
Figure 1 shows an applicator according to the invention in the closed configuration;
Figure 2 shows a schematic view of an applicator according to the invention in the closed configuration; and
Figure 3 shows a schematic view of the applicator of Figure 2 in the open configuration.
Figure 1 shows an applicator 1 for applying a fluid to a surface (not shown) . The applicator 1 comprises a reservoir 2, an applicator head 4, a valve 6 and a seal 8. The valve 6 is arranged to permit fluid to flow from the reservoir 2 into the applicator head 4 when open and substantially to prevent such flow when closed.
The applicator 1 is movable between an open configuration in which the valve 6 is open and a closed configuration (as shown) in which the valve 6 is closed. The seal 8 substantially prevents unwanted leakage of fluid from the applicator 1 from between the reservoir 2 and the applicator head 4. The seal 8 is also resiliently deformable and is arranged such that it is compressed when the applicator 1 is in the closed configuration and such that the compressed seal 8 resiliently biases the applicator 1 towards the open configuration. In this embodiment the seal 8 is a resiliently deformable rubber λO' ring.
The applicator head 4 includes an applicator tip 10 from which fluid can be transferred to a surface. The applicator tip 10 comprises a brush 12 for applying a fluid from the reservoir to a surface, in particular a human nail.
The applicator head 4 includes a flow channel 14 through which fluid from the reservoir 2 must pass to reach the applicator tip 10. The flow channel 14 includes two entry ports 16 and one exit port 18. The exit port 18 is in fluid communication with the applicator tip 10.
The applicator head includes a flow restriction element 20, such as a sinter, located between the exit port 18 and the applicator tip 10. Fluid from the reservoir 2 must pass through the sinter element 20 to reach the applicator tip 10. The sinter element 20 has a pore size such that the fluid can not rapidly flow through the sinter element 20 as this can help a user to control the flow of fluid to the applicator tip 10.
The applicator head 4 is movable with respect to the reservoir 2 along a first axis 22 such that the applicator head 4 can move towards, or away from, the reservoir 2. The seal 8 is located adjacent a reservoir outlet 26 and substantially surrounds a portion 25 of the reservoir 2 adjacent said reservoir outlet 26. The surrounded portion 25 helps to locate the seal 8 with respect to the outlet of the reservoir 26.
The reservoir 2 includes a first circumferential sealing surface 24 which is located adjacent the reservoir outlet 26. The applicator head 4 includes a second circumferential surface 30 and the seal 8 is arranged
between the first and second surfaces 24,30. The seal 8 forms a seal between the first and second surfaces 24,30 and, when compressed, exerts a biasing force thereon which biases the first and second surfaces 24,30 away from each other.
The valve 6 comprises a first valve portion 32 and a second valve portion 34. The first valve portion 32 is located on the reservoir 2 adjacent the reservoir outlet 26. The second valve portion 34 is located on the applicator head 4. The applicator 1 is arranged such that movement of the applicator head 4 relative to the reservoir 2 along the first axis 22 moves the valve portions 32,34 into and out of contact. The valve is closed when the valve portions 32,34 are in contact and open when the valve portions 32,34 are not in contact. The second valve portion 34 comprises a protrusion 36 that, in the closed position, extends into the reservoir outlet 26. In this case the valve portions 32 and 34 form conical sealing faces.
The applicator head 4 includes a substantially cylindrical skirt 38 which substantially surrounds a portion of the reservoir 2, in this case the reservoir outlet 26. The skirt 38 and reservoir 2 each include clip portions 40. The clip portions 40 include contact surfaces 42 that co-operate to limit the movement of the applicator head 4 away from the reservoir 2 along a first axis 22. The clip portions 40 also cooperate to provide a snap-fit arrangement for the applicator head 4 and reservoir 2. In the closed position the contact surfaces 42 are separated (as shown) . When the applicator head is free to move, the seal 8 biases the applicator head 4 to
move away from the reservoir 2 until the contact surfaces 42 are in contact and prevent further movement of the applicator head 4 away from the reservoir 2. When the contact surfaces 42 are in contact the applicator 1 is in the open position and the seal 8 remains in contact with both the first and second surfaces 24,30.
The arrangement substantially traps the seal 8 between the applicator head 4 and the reservoir 2. The movement of the applicator head 4 is therefore constrained between a position in which the contact surfaces 42 of the clip portions 40 limit the movement away from the reservoir 2 and contact of the valve portions 32,34 limit movement of the applicator head 4 toward the reservoir 2.
The applicator 1 includes a cap 44. The cap 44 and reservoir 2 each include coupling portions 46 which include corresponding male and female screw threads which permit the cap 44 to be releasably coupled to the reservoir 2 in a coupled position (as shown) . In the coupled position the cap 44 substantially encloses the applicator head 4.
The applicator 1 is arranged such that when the cap 44 is in the coupled position the cap 44 and applicator head 4 are in contact at a shoulder portion 43. The cap 44 applies a retaining force to the applicator head 4. The retaining force overcomes the biasing force provided by the compressed seal 8 and retains the applicator head 4 in a position adjacent the reservoir in which the valve 6 is closed.
The cap further includes an optional stand 48 so that the applicator 1 can be stored standing on the cap 44 when the cap 44 is in the coupled position.
Figure 2 shows a schematic view of an applicator 101 according to the invention in the closed configuration. The cap 44 and details of the construction of the applicator have been omitted for clarity.
In use, a user begins with the applicator 101 in the closed configuration as shown in Figure 2. The applicator 101 is retained in the closed position by, for example, a cap 44 which is removed before use. In the closed configuration the valve 6 is closed and fluid from the reservoir is prevented from entering the fluid flow channel 14 and thus cannot reach the applicator tip 10. This means that, in the closed configuration, the fluid in the reservoir 2 cannot leak from the applicator tip 10, even if the reservoir 2, which may be deformable, is squeezed to provide a driving pressure to the fluid.
To use the applicator 101 a user would remove, or release, the retaining means, for example by removing the cap 44, and the biasing force of the compressed seal 8 would force the applicator head 4 away from the reservoir 2 which moves the applicator to the open configuration.
Figure 3 shows a schematic view of the applicator of Figure 2 in the open configuration.
With the restraining means removed, the applicator head 4 is forced away from the reservoir 2 by the biasing force of the seal 8. The first and second valve portions 32,34 are forced apart to open the valve 6 so that fluid from
the reservoir 2 can pass through the valve 6 and reach the fluid flow channel 14.
The seal 8 remains in contact with both the first and second surfaces 24,30 to form a seal which substantially prevents fluid from the reservoir from leaving between the applicator head 4 and the reservoir 2. This means that the fluid can only exit the applicator 101 via the fluid flow channel 14 and pass onto the applicator tip 10 for application to a surface 50, in this case the exposed surface of the human nail.
To apply a fluid to surface 50, the applicator 101 is arranged such that the fluid from the reservoir can be forced towards the applicator tip 10 by squeezing the reservoir 2. In this case the applicator tip 10 is arranged so that it is lower than the reservoir 2 and the reservoir is squeezed so that fluid passes from the reservoir 2, through the flow channel 14 and onto the applicator tip 10 from which it can be applied to the surface 50.
After use, the pressure on the reservoir 2 is released and applicator 101 is returned to the closed configuration by screwing the cap 44 onto the reservoir 2 so that it reaches the coupled position as shown in Figure 1. In the coupled position the applicator head 4 has been forced towards the reservoir 2 until the valve portions 32,34 make contact and close the valve 6. The seal 8 has therefore been compressed and is retained in the compressed state until the cap 44 is next removed.
It should be understood that the invention has been described above by way of example only and that
modifications in detail can be made without departing from the scope of the claims.
Claims
1. An applicator for applying a fluid to a surface, the applicator comprising a reservoir, an applicator head, a valve and a seal, the valve being arranged to permit fluid to flow from the reservoir into the applicator head when open and substantially prevent such flow when closed, the applicator being movable between an open configuration in which the valve is open and a closed configuration in which the valve is closed, the seal substantially preventing unwanted leakage of fluid from the applicator from between the reservoir and the applicator head, the seal also being resiliently deformable and arranged such that it is compressed when the applicator is in the closed configuration and such that the compressed seal resiliently biases the applicator towards the open configuration.
2. An applicator as claimed in any preceding claim, in which the seal is a resiliently deformable λO' ring.
3. An applicator as claimed in claim 2, in which the λO' ring is rubber.
4. An applicator as claimed in any receding claim, in which the applicator head includes an applicator tip from which fluid can be transferred to a surface, the applicator head including at least one flow channel through which fluid from the reservoir must pass to reach the applicator tip, the flow channel including an entry port and an exit port, the exit port being in fluid communication with the applicator tip and the entry port being in fluid communication with the reservoir only when the valve is open.
5. An applicator as claimed in any preceding claim in which the applicator head is movably coupled to the reservoir, the seal is arranged between the applicator head and the reservoir and substantially surrounds a portion of the reservoir adjacent a reservoir outlet.
6. An applicator as claimed in claim 5, in which the reservoir includes a first circumferential surface adjacent the outlet, the applicator head includes a second circumferential surface and the seal is arranged between the first and second surfaces.
7. An applicator as claimed in any preceding claim, in which the applicator head includes a substantially cylindrical skirt, the skirt substantially surrounding a portion of the reservoir, the skirt and reservoir each including clip portions that co-operate to substantially limit movement of the applicator head away from the reservoir along a first axis.
8. An applicator as claimed in any preceding claim, in which the applicator includes a cap, the cap and reservoir each including coupling portions enabling the cap to be releasably coupled to the reservoir in a coupled position in which the cap substantially encloses the applicator head.
9. An applicator as claimed in claim 8, in which the applicator is arranged such that when the cap is in the coupled position the cap and applicator head are in contact and the applicator is retained in the closed configuration.
10. An applicator as claimed in any preceding claim, in which the reservoir contains a fluid and said fluid comprises a pharmaceutically active component.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08162169.0 | 2008-08-11 | ||
| EP08162169 | 2008-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010018147A1 true WO2010018147A1 (en) | 2010-02-18 |
Family
ID=40382799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/060323 Ceased WO2010018147A1 (en) | 2008-08-11 | 2009-08-10 | Applicator |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2010018147A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023002340A1 (en) * | 2021-07-19 | 2023-01-26 | Leb S.R.L. | Improved applicator device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0247885A2 (en) * | 1986-05-28 | 1987-12-02 | Avon Products, Inc. | Cosmetic applicator |
| WO2001095759A2 (en) * | 2000-06-16 | 2001-12-20 | Nicci Prokopos | A nail care accessory |
| US20050276655A1 (en) * | 2003-12-02 | 2005-12-15 | Tokiwa Corporation | Container with applicator |
-
2009
- 2009-08-10 WO PCT/EP2009/060323 patent/WO2010018147A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0247885A2 (en) * | 1986-05-28 | 1987-12-02 | Avon Products, Inc. | Cosmetic applicator |
| WO2001095759A2 (en) * | 2000-06-16 | 2001-12-20 | Nicci Prokopos | A nail care accessory |
| US20050276655A1 (en) * | 2003-12-02 | 2005-12-15 | Tokiwa Corporation | Container with applicator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023002340A1 (en) * | 2021-07-19 | 2023-01-26 | Leb S.R.L. | Improved applicator device |
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