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WO2024242973A1 - Rasoir électrique pour soins corporels - Google Patents

Rasoir électrique pour soins corporels Download PDF

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Publication number
WO2024242973A1
WO2024242973A1 PCT/US2024/029568 US2024029568W WO2024242973A1 WO 2024242973 A1 WO2024242973 A1 WO 2024242973A1 US 2024029568 W US2024029568 W US 2024029568W WO 2024242973 A1 WO2024242973 A1 WO 2024242973A1
Authority
WO
WIPO (PCT)
Prior art keywords
razor
blade
stator
cartridge
cylindrical roller
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.)
Pending
Application number
PCT/US2024/029568
Other languages
English (en)
Inventor
Shlomo Zucker
Boaz ZUCKER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2024242973A1 publication Critical patent/WO2024242973A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
    • B26B19/16—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor involving a knife cylinder or a knife cone or separate cutting elements moved like a rotating cylinder or a rotating cone

Definitions

  • the present invention generally relates to electric razors, and in particular to electric razors for shaving of body and/or pubic hair and razor cartridges for such electric razors.
  • Manual razors employ a razor blade or a razor cartridge comprising multiple razor blades fixed or pivotally attached to a handle. The shaving action is achieved by the user manipulating the razor so as to move the razor blade or razor cartridge across the skin. The razor blade(s) thereby come(s) into contact with the skin and cut(s) the hair.
  • Electric razors employ a motor to generate a relatively high-speed reciprocating or rotating cutting motion.
  • electric razors employing a high-speed rotating roller comprising razor blades are disclosed in U.S. Patent Nos. 6,055,731 and 6,442,840 and U.S. Patent Publication No. 2006/0218793.
  • the rotation of the roller with the razor blades cuts the hair vertically similar to a guillotine.
  • these electric roller-based razors are designed for shaving facial hair and not for shaving body hair.
  • these electric razors have difficult in cutting long and/or curly body hair and may further cause nicks and cuts when used for body grooming.
  • An aspect of the invention relates to a razor cartridge for an electric razor.
  • the razor cartridge comprises a stator comprising a stator surface with alternating peaks and valleys.
  • the razor cartridge also comprises a cylindrical roller rotatably attached to the stator and comprising at least one longitudinal blade receptacle running along a longitudinal axis of the cylindrical roller.
  • the razor cartridge further comprises at least one razor blade assembly arranged in the at least one longitudinal blade receptacle and movable relative to the cylindrical roller in the at least one longitudinal blade receptacle along the longitudinal axis.
  • Each razor blade assembly of the at least one razor blade assembly comprises a blade support, a razor blade attached to the blade support and a support structure comprising a blade support receptacle housing at least a portion of the blade support.
  • the support structure also comprises a guide device in contact with the stator surface. The guide device is configured to travel along a circular path over the stator surface comprising the alternating peaks and valleys as the cylindrical roller is rotated relative
  • Another aspect of the invention relates to an electric razor comprising a razor body comprising an electric motor and a cartridge receptacle comprising a razor cartridge according to above.
  • the electric motor is arranged to rotate the cylindrical roller relative to the stator.
  • the invention relates to an electric razor and a razor cartridge comprising at least one razor blade.
  • the razor cartridge and the electric razor achieve a comfortable shaving by providing a dual motion of the at least one razor blade as the at least one razor blade is rotated by the electric razor.
  • the dual motion causes a vertical, guillotine-like cutting of hair together with a horizontal, saw-like cutting of hair.
  • This dual motion of the at least one razor blade reduces the cutting force required to cut the hair, which allows for a more comfortable shaving experience for the user while reducing wear of the at least one razor blade.
  • Fig. 1 is an illustration of an electric razor according to an embodiment in a side view
  • Fig. 2 is an illustration of an electric razor according to an embodiment in a bottom view
  • Fig. 3 is an illustration of an electric razor according to an embodiment in a top view
  • Fig. 4 is an illustration of an electric razor according to an embodiment in an end view
  • Fig. 5 is an illustration of an electric razor according to an embodiment in another end view
  • Fig. 6 is an illustration of a razor cartridge according to an embodiment in a side view
  • Fig. 7 is an illustration of a razor cartridge according to an embodiment in another side view
  • Fig. 8 is an illustration of a razor cartridge according to an embodiment in an end view
  • Fig. 9 is an illustration of a razor cartridge according to an embodiment in another end view
  • Fig. 10 is an illustration of razor cartridges turned 90 degrees relative to each other;
  • Fig. 11 is an illustration of a razor cartridge according to an embodiment in a side view
  • Fig. 12 is a close-up of the portion of the razor cartridge within the circle in Fig. 11 ;
  • Fig. 13 is a cross-sectional view of the razor cartridge in Fig. 11 along the line D-D;
  • Fig. 14 is an illustration of a razor cartridge according to an embodiment in a perspective view
  • Fig. 15 is an illustration of a blade assembly according to an embodiment
  • Fig. 16 is an illustration of the different cutting actions of a razor blade in a razor cartridge according to an embodiment
  • Fig. 17 is an illustration of release of a razor cartridge from an electric razor according to an embodiment
  • Fig. 18 is an illustration of insertion of a razor cartridge from an electric razor according to an embodiment.
  • Fig. 19 is an illustration of a razor cartridge according to an embodiment in a side view (A), in a cross- sectional view (B) along the line A-A and in a close-up view (C) within the circle; and
  • Fig. 20 is an exploded view of an electric razor according to an embodiment. DETAILED DESCRIPTION
  • the present invention generally relates to electric razors, and in particular to electric razors for shaving of body and/or pubic hair and razor cartridges for such electric razors.
  • Body grooming is common among men to remove body and/or pubic hair.
  • Body trimmers are commonly used to remove body and/or pubic hair but these devices generally suffer from the risk of lacerations, nicks and cuts, have difficult in cutting long and/or curly hair and do not provide a close shave.
  • the present invention relates to an electric razor 1 comprising a replaceable cylindrical razor cartridge 100, see Figs. 1-6.
  • the one or more razor blades 150 of the razor cartridge 100 is or are rotated by an electric motor 15 in the electric razor 1 (see Fig. 20) to achieve a vertical cutting action as the at least one razor blade 150 is rotated, which is indicated by the upwards pointing arrow in Fig. 16.
  • This vertical cutting as the at least one razor blade 150 is rotated cuts the hair similar to a guillotine.
  • the present invention though, not only rotates the at least one razor blade 150 but further induces a longitudinal movement of the at least one razor blade 150 along a longitudinal axis 122 of the razor cartridge 100 as indicated by the double-headed arrow in Fig. 16.
  • the at least one razor blade 150 is also moving back and forth along the longitudinal axis 122 as it rotates. This achieves a saw-like cutting action for the at least one razor blade 150.
  • the electric razor 1 and razor cartridge 100 of the invention achieve a dual hair-cutting movement and action as indicated by the zigzag arrow in Fig. 16.
  • This dual movement and cutting action of the at least one razor blade 150 reduces the cutting force on the at least one razor blade 150 when cutting hair. This achieves a comfortable and effortless hair cutting and shaving and is in particular beneficial for cutting thick, long and/or curly hair.
  • Another significant advantage of reducing the cutting force by the dual razor blade movement and cutting is that the wear of the edge of the razor blade 150 is reduced meaning that the longevity of the at least one razor blade 150 is thereby increased.
  • Figs. 1 to 5 illustrate an embodiment of an electric razor 1 frow different views and Fig. 20 illustrates an exploded view of the electric razor 1 .
  • the electric razor 1 comprises a razor body or housing 2 comprising an electric motor 15.
  • the razor body 2 preferably also comprises a power source 10 for the electric motor 15, i.e., a battery and in particular a rechargeable battery.
  • the razor body 2 preferably comprises a charging port 5 as indicated in Fig. 5 for charging the rechargeable battery.
  • the charging port 5 could, for instance, be in the form of a universal serial bus (USB) C port or a micro USB port as illustrative, but non-limiting, examples.
  • USB universal serial bus
  • the charging port 5 can, for instance, be provided in one of the short ends of the razor body 2 as shown in Fig. 5.
  • the electric razor 1 may also comprise a light indicator 6 for showing, for instance, the power status of the battery and/or for showing the charging status or progress of the rechargeable battery during recharging.
  • the razor body 2 also comprises a cartridge receptacle 3 for receiving and housing the razor cartridge 100.
  • the razor cartridge 100 is replaceable and thereby detachably mounted in the cartridge receptacle 3.
  • the electric razor 1 may comprise an ejection button 4, see Fig. 4, that could be pressed to release the razor cartridge 100 from the cartridge receptacle 3 as shown in Fig. 17. This means that the razor cartridge 100 could be removed and discarded once the at least one razor blade 150 is worn out to thereby be replaced by a fresh razor cartridge 100.
  • the razor cartridge 100 could also be removed from the cartridge receptacle 3 to enable a thoroughly cleaning of the razor cartridge 100, if needed, and then putting the cleaned razor cartridge 100 back into the cartridge receptacle 3.
  • the side view of the electric razor 1 shown in Fig. 3 illustrates a power button 7 to switch the electric razor 1 on and off.
  • the electric razor 1 may be equipped with a light source 9, such as at least one light emitting diode (LED), arranged in connection with the cartridge receptacle 3.
  • a light source 9 such as at least one light emitting diode (LED)
  • a respective LED could be arranged on either side of the electric razor 1 in connection with the cartridge receptacle 3 to provide illumination during shaving.
  • the at least one light source 9, such as LED is powered by the power source 10, preferably rechargeable battery, of the electric razor 1 .
  • the razor body 2 may comprise a razor housing 2A and two body halves 2B, 2C.
  • a first body half 2B comprises the electric motor 15 and the power source 10, preferably a rechargeable battery.
  • the two body halves 2B, 2C are connected to each other to enclose the electric motor 15 and the power source 10 and the two connected body halves 2B, 2C then fit into the razor housing 2A to form the razor body 2.
  • the electric razor 1 is preferably designed to enable both dry and wet shaving.
  • the electric razor 1 is waterproof and can thereby be used, for instance, in the shower.
  • the power source 10, preferably rechargeable battery, and the electric motor 15 are sealed within the razor body 2 with a watertight seal to prevent ingress of water within the compartment(s) of the razor body 2 housing the power source 10 and the electric motor 15.
  • Figs. 6 to 10 illustrates the razor cartridge 100 in different views.
  • the razor cartridge 100 comprises a stator 110 comprising a stator surface 1 11 with alternating peaks 112 and valleys 113.
  • the stator surface 111 comprises multiple, i.e., at least two, bumps corresponding to the peaks 112 with surface between adjacent bumps corresponding to the valleys 113.
  • the razor cartridge 100 also comprises a cylindrical roller 120 rotatably attached to the stator 110.
  • the cylindrical roller 120 comprises at least one longitudinal blade receptacle 121 running along a longitudinal axis 122 of the cylindrical roller 120 (see Fig. 13).
  • the razor cartridge 100 further comprises at least one razor blade assembly 130 arranged in the at least one longitudinal blade receptacle 121 (see Fig. 15).
  • the razor blade assembly 130 is movable relative to the cylindrical roller 120 in the at least one longitudinal blade receptacle 121 along the longitudinal axis 122.
  • Each razor blade assembly 130 of the at least one razor blade assembly 130 comprises a blade support 155, a razor blade 150 attached to the blade support 155 and a support structure 160 comprising a blade support receptacle 161 housing at least a portion of the blade support 155.
  • the support structure 160 also comprises a guide device 162 in contact with the stator surface 111.
  • the guide device 162 is configured to travel a circular path over the stator surface 111 comprising the alternating peaks 112 and valleys 113 as the cylindrical roller 120 is rotated relative to the stator 110.
  • the razor cartridge 100 is thereby designed and constructed to enable dual movements of the at least one razor blade 150 when the razor cartridge 100 is installed in the cartridge receptacle 3 of the electric razor 1.
  • the electric motor 15 of the electric razor 1 causes rotation of the cylindrical roller 120 in the cartridge receptacle 3 relative to the stator 110 that remains stationary during rotation of the cylindrical roller 120.
  • the at least one razor blade assembly 130 arranged in the at least one longitudinal blade receptacle 121 of the cylindrical roller 120 will thereby also rotate causing rotation of the razor blade 150 in the razor blade assembly 130.
  • Rotation of the cylindrical roller 120 and the at least one razor blade assembly 130 relative to the stator 110 causes the guide device 162 of the support structure 160 in each razor blade assembly 130 to travel along a circular path on the stator surface 111 of the stator 110. This means that the guide device 162 will travel over the peaks 112 and into the valleys 113, i.e., over the multiple bumps, along the circular path on the stator surface 111.
  • the peaks 112 will thereby cause the razor blade assembly 130 to be pushed in the longitudinal blade receptacle 121 in a direction away from the stator 110, whereas the razor blade assembly 130 is moved in the opposite direction, i.e., towards the stator 110, when the guide device 162 is in contact with a valley 113 in the stator surface 1 11.
  • the guide device 162 travels along a circular path with alternating peaks 112 and valleys 113 causing the razor blade assembly 130 to be moved back and forth along the longitudinal axis 122 in the longitudinal blade receptacle 121.
  • the particular design of the stator surface 111 of the stator 110 with the bumps formed by the alternating peaks 112 and valleys 113 operates similar to a camshaft in terms of converting a rotational motion into a reciprocating motion.
  • the particular design of the stator surface 111 of the stator 110 and the movable arrangement of each razor blade assembly 130 in a respective longitudinal blade receptacle 121 and with a guide device 162 configured to travel along a circular path along the stator surface 111 during rotation of the cylindrical roller 120 relative to the stator 110 induces as a saw-like motion of the razor blade 150 back and forth along the longitudinal axis 122 in addition to rotation of the razor blade 150.
  • the rotation of the cylindrical roller 120 and thereby of the razor blade(s) 150 in the electric razor 1 achieves a guillotine-like, vertical cut of hair, whereas the simultaneous reciprocating movement of the razor blade(s) additionally achieves a saw-like, horizontal cut of hair.
  • the electric razor 1 and its including electric motor 15 is preferably capable of rotating the razor cartridge 100 in the cartridge receptacle 3 at a speed selected within an interval of from 1,000 up to 3,000 revolutions per minute (RPM), more preferably from 1 ,500 up to 2,500 RPM, such as about 2,000 RPM.
  • RPM revolutions per minute
  • the razor cartridge 100 comprises multiple N>2 razor blade assemblies 130 and thereby N razor blades 150, this gives N times the number of revolutions per minute cuts per minute. For instance, a rotational speed of 2,000 RPM with two razor blade assemblies 130 and two razor blades 150 would give about 4,000 cuts per minute.
  • the razor blade assemblies 130 and thereby the razor blades 150 will be moved back and forth in the longitudinal blade receptacles 121 of the razor cartridge 100 to provide the saw-like cutting action together with the guillotine-like cutting as obtained due to the rotation.
  • the razor blade assemblies 130 and thereby the razor blades 150 could be moved back and forth along the longitudinal axis 122 at a distance of from sub mm up to a few mm, such as from 0.1 mm up to 2 mm, preferably from 0.25 mm up to 1 mm, and more preferably about 0.5 mm.
  • the razor blade 150 is preferably attached to or carried by a blade support 155 as shown in Fig. 15 and the cross-sectional view of Fig. 13.
  • the razor blade 150 and the blade support 155 could be two different pieces with the razor blade 150 attached to the blade support 155, such as by welding.
  • the razor blade 150 and the blade support 155 could be a unitary metal piece.
  • the blade support 155 is arranged to support the razor blade 150 at a correct position, including blade angle and blade exposure, when the razor blade assembly 130 is arranged in a longitudinal blade receptacle 121 of the razor cartridge 100.
  • the razor blade 150 is angled relative, such as orthogonal or close to orthogonal, to the blade support 155.
  • the blade support 155 with attached razor blade 150 is at least partly comprised or housed within a blade support receptacle 161 of the support structure 160.
  • the blade support 155 with attached razor blade 150 is kept in the blade support receptacle 161 by a blade lock 140, preferably also at least partly comprises or housed within the blade support receptacle 161 .
  • This blade lock 140 could fit in between an outer facing surface 163 of the support structure 160 and one or more support elements 164, 165 of the support structure 160.
  • the blade lock 140 preferably comprises at least one matching recess 142, 143, in which the at least one support element 164, 165 is present. In the embodiment shown in Fig.
  • the blade lock 140 comprises a respective recess 142 at either end of the blade lock 140 in additional to a central recess 143. Accordingly, the support structure 160 then comprises three matching support elements 164, 165. At least one of the support elements 165 preferably comprises a snap-fit lock 166 to keep the blade lock 140 and thereby the blade support 155 with the attached razor blade 150 within the blade support receptacle 161 of the support structure 160.
  • the support structure 160 comprises a guide device 162 configured to engage and be in contact with the stator surface 111 once the razor blade assembly 130 is inserted in the longitudinal receptacle 121 of the razor cartridge 100.
  • the guide device 162 could be in the form of any device capable of engaging the stator surface 111 as the cylindrical roller 120 is rotating relative to the stator 110.
  • An example of such a guide device 162 is a wheel 162 as shown in Fig. 15. In such a case, the wheel 162 is rotatably arranged in connection with an end 167 of the support structure 160 facing the stator 110.
  • the wheel 162 is thereby configured to travel along a circular path on the stator surface 111 and thereby contacting the so-called peaks 112 and valleys 113 on the stator surface 111. This circular path will thereby be similar to a sine curve with alternating crests and throughs.
  • the stator surface 111 could be regarded as comprising alternating crests and throughs.
  • a wheel 162 travelling along the circular path on the stator surface 111 is a preferred embodiment of a guide device 162 since the friction will be kept low as the wheel 162 travels along the circular path.
  • the embodiments are, however, not limited to wheels 162 as examples of guide devices 162.
  • any device that could be rolled or slid along a circular path on the stator surface 111 as the cylindrical roller 120 is rotating relative to the stator 110 could be used.
  • An example of a sliding guide device 162 is to have a low friction coating or a low friction material at the end 167 of the support structure 160 that can then slide along the circular path on the stator surface 111.
  • the outer surface 163 of the support structure 160 is preferably a curved surface 163 to match the curvature of the outer surface 124 of the cylindrical roller 120 when the razor blade assembly 130 is arranged in the longitudinal blade receptacle 121.
  • Fig. 6 schematically illustrates the razor cartridge 100 with a razor blade assembly 130 comprised in a longitudinal receptacle 122 of the cylindrical roller 120.
  • the cylindrical roller 120 has an outer or cylindrical surface 124.
  • the cylindrical surface 124 comprises ribs 123 extending along a portion of the cylindrical surface 124, i.e., along a portion of the circumference of the cylindrical roller 120.
  • the ribs 123 thereby extend or protrude a short distance from the cylindrical surface 124.
  • the ribs 123 are arranged to be in contact with the skin during shaving to thereby protect the skin from the edge of the razor blade(s) 150.
  • the ribs 123 thereby help in positioning the edge of the razor blade(s) 150 to allow a close and clean hair cut while at the same time not causing nicks or cuts in the skin.
  • hair present in the space 125 between adjacent ribs 123 will be cut by the razor blade(s) 150 as the cylindrical roller 120 is rotating.
  • the cylindrical surface 124 will be divided into multiple portions between the multiple longitudinal receptacles 122, each containing a respective razor blade assembly 130. In such a case, the multiple portions of the cylindrical surface 124 comprises ribs 123.
  • the position of the ribs 123 in the multiple portions are then preferably alternating for adjacent portions of the cylindrical surface 124 as is more clearly shown in Fig. 12. This means that a circumference aligned with a rib 123 at a first portion of the cylindrical surface 124 will then continue in between adjacent ribs 123 in a second, adjacent portion of the cylindrical surface 124.
  • This alternating positioning of the ribs 123 means that as the cylindrical roller 120 is rotating all portions of the skin covered by the cylindrical surface 124 of the cylindrical roller 120 will be shaved.
  • the first razor blade 150 will cut hair at substantially half the skin surface and the second razor blade 150 will then cut hair the remaining half of the skin surface. This enables an efficient shaving while at the same time protecting the skin from cuts and nicks.
  • the stator 110 preferably comprises at least one wing 114, more preferably multiple, such as two, wings 114, extending from the periphery of the stator 110.
  • the at least one wing 114 is configured to extend into at least one matching slot in the cartridge receptacle 3 to hold the stator 110 stationary when the electric motor 15 of the electric shaver 1 rotates the cylindrical roller 120.
  • the electric razor 1 could include any other structure, such as knee, arranged to engage the at least one wing 114 when the razor cartridge 100 is inserted in the cartridge receptacle 3 to thereby prevent the stator 110 from rotating in the cartridge receptacle 3.
  • Also other ways of maintaining the stator 110 stationary in the cartridge receptacle 3 as the cylindrical roller 120 is rotating than one or more wings 140 could be used according to the embodiments.
  • the razor cartridge 100 also comprises a shaft element 170 running through the stator
  • the shaft element 170 is configured to engage a drive element 8 in the electric shaver 1, see Fig. 20, wherein the drive element 8 is rotatable by the electric motor 15. Rotation of the drive element 8 causes rotation of the shaft element 170 and thereby rotation of the cylindrical roller 120.
  • the end of the shaft element 170 extending beyond the stator 110 may, for instance, have a shape or form facilitating attachment of the shaft element 170 to the drive element 8.
  • the end of the shaft element 170 may have a quadratic crosssection as best shown in Fig. 9.
  • the drive element 8 preferably comprises a quadratic indentation or slot, into which the end of the shaft element 170 is inserted when the razor cartridge 100 is installed in the cartridge receptacle 3. This means that a rotation of the drive element 8 by the electric motor 15 will also cause a rotation of the shaft element 170.
  • Other mechanisms of interlocking the drive element 8 and the shaft element 170 are possible and could be used to transfer a rotation of the drive element 8 into a rotation of the shaft element 170.
  • the end of the razor cartridge 100 opposite to the stator 110 preferably comprises a cap 180 housing a spring 181 , see Figs. 19A-19C.
  • the cap 180 preferably extends around one of the ends of the cylindrical roller 120, which end thereby is at least partly housed within the cap 180.
  • the spring 181 is then provided between the cap 180 and the cylindrical roller 120 to exert a force on the cylindrical roller 120 towards the stator 110.
  • the cylindrical roller 120 is preferably spring-loaded in the razor cartridge 100 to be pushed towards the stator 110 by the spring 181.
  • This spring force pushes the guide device 162 into contact with stator surface 111 and thereby enables the guide device 162 to travel along the alternating peaks 112 and valleys 113 in the stator surface 111 during rotation of the cylindrical roller 120.
  • Such a spring-loaded mechanism is an illustrative example of achieving a reciprocating motion along the longitudinal axis 122 as the guide device 162 is traveling along the circular path on the stator surface
  • the cap 180 preferably comprises a central opening, through which a knob 182 is extending.
  • This knob 182 is connected to the spring 181 housed in the cap 180 and is thereby movable along the longitudinal axis 122 relative to the cap 180.
  • This knob 182 is engageable by the ejection button 4 on the electric razor 1 .
  • the knob 182 is depressed in the direction towards the stator 110 and the razor cartridge 100 can thereby be released from the cartridge receptacle 3 as shown in Fig. 17.
  • the cylindrical roller 120 of the razor cartridge 100 comprises at least one longitudinal receptacle 121 comprising a respective razor blade assembly 130. Accordingly, the razor cartridge 100 comprises at least one razor blade 150.
  • the cylindrical roller 120 of the razor cartridge 100 comprises at least one longitudinal receptacle 121 comprising a respective razor blade assembly 130. Accordingly, the razor cartridge 100 comprises at least one razor blade 150.
  • the cylindrical roller 120 of the razor cartridge 100 comprises at least one longitudinal receptacle 121 comprising a respective razor blade assembly 130. Accordingly, the razor cartridge 100 comprises at least one razor blade 150.
  • the cylindrical roller 120 of the razor cartridge 100 comprises at least one longitudinal receptacle 121 comprising a respective razor blade assembly 130. Accordingly, the razor cartridge 100 comprises at least one razor blade 150.
  • the cylindrical roller 120 of the razor cartridge 100 comprises at least one longitudinal receptacle 121 comprising a respective razor blade assembly 130. Accordingly, the razor cartridge 100 comprises at least one razor blade 150.
  • the cylindrical roller 120 of the razor cartridge 100 comprises at least one longitudinal
  • the cylindrical roller 120 comprises multiple longitudinal receptacles 121 comprising a respective razor blade assembly 130 and the razor cartridge 100 thereby comprises multiple razor blades 150.
  • the multiple longitudinal receptacles 121 and the razor blades 150 are preferably evenly distributed over the outer surface 124 of the cylindrical roller 120.
  • the cylindrical roller 120 comprises from 2 up to 6 longitudinal receptacles 121 to thereby provide a razor cartridge 100 with from 2 up to 6 razor blades 150.
  • the cylindrical roller 120 comprises from 2 up to 4 longitudinal receptacles 121 to thereby provide a razor cartridge 100 with from 2 up to 4 razor blades 150.
  • the cylindrical roller 120 could comprise 2, 3 or 4, preferably 2, longitudinal receptacles
  • 121 to thereby provide a razor cartridge 100 with 2, 3 or 4, preferably 2, razor blades 150.
  • the electric razor 1 with the replaceable razor cartridge 100 is well suited for body grooming and shaving body and/or pubic hair.
  • the electric razor 1 is designed to be easy to use and can even shave hair on hard to reach areas on the body due to the slim design of the electric razor 1 .
  • the dual motion of the one or more razor blades 150 in the razor cartridge 100 achieves a more efficient cutting, allowing cutting of also difficult to cut hair, such as long and/or curly hair.
  • the dual razor blade motion also reduces the cutting force, which allows for a more comfortable shaving experience and an increased longevity of the razor blade(s) 150.
  • the design of the electric razor 1 with the replaceable razor cartridge 100 allows a close shave while reducing the risk of nicks and cuts during shaving.
  • the electric razor 1 combines the convenience of electrical shaving with the precision and closeness of a traditional manual razor.
  • An aspect of the invention therefore relates to a razor cartridge 100 for an electric razor 1.
  • the razor cartridge 100 comprises a stator 110 comprising a stator surface 111 with alternating peaks 112 and valleys 113 and a cylindrical roller 120 rotatably attached to the stator 110 and comprising at least one longitudinal blade receptacle 121 running along a longitudinal axis 122 of the cylindrical roller 120.
  • the razor cartridge 100 also comprises at least one razor blade assembly 130 arranged in the at least one longitudinal blade receptacle 121 and movable relative to the cylindrical roller 120 in the at least one longitudinal blade receptacle 121 along the longitudinal axis 122.
  • Each razor blade assembly 130 of the at least one razor blade assembly 130 comprises a blade support 155, a razor blade 150 attached to or integrated with the blade support 155, and a support structure 160 comprising a blade support receptacle
  • the guide device 162 is configured to travel along a circular path over the stator surface 111 comprising the alternating peaks 112 and valleys 113 as the cylindrical roller 120 is rotated relative to the stator 110.
  • the cylindrical roller 120 is spring-loaded in the razor cartridge 100.
  • an end of the razor cartridge 100 opposite to the stator 100 comprises a cap 180 housing a biasing member, preferably a spring 181, arranged between the cap 180 and the cylindrical roller 120 and configured to exert a force on the cylindrical roller 120 towards the stator 110.
  • a biasing member preferably a spring 181
  • the at least one razor blade assembly 130 is arranged in the at least one longitudinal blade receptacle 121 to rotate relative the stator 110 around the longitudinal axis 122 and reciprocate relative the stator 110 along the longitudinal axis 122 as the guide device 162 travels the circular path over the stator surface 111 comprising the alternating peaks 112 and valleys 113.
  • the at least one razor blade assembly is moveably arranged in the at least one longitudinal blade receptacle 121 so as to allow movement of the razor blade assembly back and forth relative the stator 110 along the longitudinal axis 122 at a distance selected within an interval of 0.1 to 2 mm, preferably within an interval of 0.25 to 1 mm, and more preferably about 0.5 mm as the guide device
  • the peaks 112 in the stator surface 111 are arranged to push the at least one razor blade assembly along the longitudinal axis 122 in a direction away from the stator 110.
  • the razor blade 150 is attached to the blade support 155.
  • the razor cartridge 100 further comprises a blade lock 140 at least partly comprised within the receptacle 161 of the support structure 160 and configured to lock the blade support 155 and the razor blade 150 in the support structure 160.
  • the support structure 160 comprises at least one support element 164, 165.
  • the blade lock 140 comprises at least one matching recess 142, 143, in which the at least one support element 164, 165 is arranged.
  • At least one support element 164, 165 of the at least one support element 164, 165 comprises a snap-fit lock 166 arranged to keep the blade lock 140 within the receptacle 161 of the blade structure 160.
  • the guide device 162 is a wheel rotatably arranged in connection with an end 167 of the support structure 160 facing the stator 110.
  • the guide device 162 is a sliding guide device comprising a low friction coating or a low friction material arranged to slide along the circular path over the stator surface 111.
  • the cylindrical roller 120 has an outer surface 124 comprising ribs 123 extending along a portion of the outer surface 124.
  • the cylindrical roller 120 comprises multiple longitudinal blade receptacles 121, the outer surface 124 of the cylindrical roller 120 is divided into multiple surface portions between the multiple longitudinal blade receptacles 121 and the multiple surface portions comprise the ribs 123.
  • the position of the ribs 123 in the multiple surface portions are alternating for adjacent surface portions of the multiple surface portions.
  • a circumference aligned with a rib 123 at a first surface portion of the multiple surface portions continues in between adjacent ribs 123 at a second, adjacent surface portion of the multiple surface portions.
  • the cylindrical roller 120 comprises multiple longitudinal blade receptacles 121 and the razor cartridge 100 comprises multiple razor blade assemblies 130 arranged in a respective longitudinal blade receptacle of the multiple longitudinal blade receptacles 121.
  • the cylindrical roller 120 comprises two to six, preferably two to four, and more preferably two, longitudinal blade receptacles 121 .
  • the razor cartridge 100 comprises two to six, preferably two to four, and more preferably two, razor blade assemblies 130 arranged in a respective longitudinal blade receptacle of the two to six, preferably two to four, and more preferably two, longitudinal blade receptacles 121.
  • Another aspect of the invention relates to an electric razor 1 comprising a razor body 2 comprising an electric motor 15, and a cartridge receptacle 3 comprising a razor cartridge 100 according to the invention.
  • the electric motor 15 is arranged to rotate the cylindrical roller 120 relative to the stator 110.
  • the electric motor 15 is arranged to rotate the cylindrical roller 120 relative to the stator 110 to induce a dual motion of the at least one razor blade 150 relative the stator 110 in the form of a rotation of the at least one razor blade 150 around the longitudinal axis 122 and a reciprocating movement of the at least one razor blade 150 along the longitudinal axis 122.
  • the razor body 2 comprises a power source 10, preferably a battery, and more preferably a rechargeable battery.
  • the razor body 2 comprises a razor housing 2A, a first body half 2B comprising the electric motor 15 and the power source 10, and a second body half 2C connected to the first body half 2B to enclose the electric motor 15 and the power source 10.
  • the first and second body halves 2B, 2C are arranged in the razor housing 2A.
  • the electric razor 1 further comprises an ejection button 4 configured to be pressed to release the razor cartridge 100 from the cartridge receptacle 3.
  • an end of the razor cartridge 100 opposite to the stator 110 comprises a cap 180 housing a spring 181 arranged between the cap 180 and the cylindrical roller 120 to exert a force on the cylindrical roller 120 towards the stator 110.
  • the cap 180 comprises a central opening, configured to allow extensions of a knob 182 therethrough.
  • the knob 182 is connected to the spring 181 , and moveably arranged relative to the cap 180 along the longitudinal axis 122, and is engageable by the ejection button 4 to release the razor cartridge 100 from the cartridge receptacle 3.
  • the electric razor 1 further comprising at least one light source 9, preferably at least one light emitting diode (LED), arranged in connection with the cartridge receptacle 3.
  • at least one light source 9 preferably at least one light emitting diode (LED), arranged in connection with the cartridge receptacle 3.
  • the electric motor 15 is configured to rotate the razor cartridge 100 in the cartridge receptacle 3 at rotation speed selected within an interval of 1,000 to 3,000 revolutions per minute (rpm), preferably selected within an interval of 1,500 to 2,500 rpm, and more preferably about 2,000 rpm.
  • the cartridge receptacle 3 comprises at least one slot
  • the stator 110 comprises at least one wing 114 extending into the at least one slot to hold the stator 110 stationary when the electric motor 15 rotates the cylindrical roller 120.
  • the razor cartridge 100 comprises a shaft element 170 running through the stator 110 and connected to or being integral with the cylindrical roller 120.
  • the electric razor 1 further comprises a drive element 8 rotatable by the electric motor 15.
  • the shaft element 170 is configured to engage the drive element 8.
  • an end of the shaft element 170 extending beyond the stator 170 has a quadrilateral, preferably quadratic, cross-section, and the drive element 8 comprises a quadrilateral, preferably quadratic, indentation or slot, such that the end of the shaft element 170 is insertable therein.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

L'invention concerne un rasoir électrique (1) et une cartouche (100) de rasoir comprenant au moins une lame (150) de rasoir. La cartouche (100) et le rasoir électrique (1) permettent un rasage confortable en fournissant un double mouvement de ladite au moins une lame (150) de rasoir lorsque ladite au moins une lame (150) de rasoir est mise en rotation par le rasoir électrique (1). Le double mouvement provoque une coupe verticale, de type guillotine, des cheveux avec une coupe de cheveux horizontale, en forme de scie. Ce double mouvement de ladite au moins une lame (150 ) de rasoir réduit la force de coupe requise pour couper les cheveux, ce qui permet une expérience de rasage plus confortable pour l'utilisateur tout en réduisant l'usure de ladite au moins une lame (150) de rasoir.
PCT/US2024/029568 2023-05-22 2024-05-16 Rasoir électrique pour soins corporels Pending WO2024242973A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363468045P 2023-05-22 2023-05-22
US63/468,045 2023-05-22

Publications (1)

Publication Number Publication Date
WO2024242973A1 true WO2024242973A1 (fr) 2024-11-28

Family

ID=91586128

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2024/029568 Pending WO2024242973A1 (fr) 2023-05-22 2024-05-16 Rasoir électrique pour soins corporels

Country Status (1)

Country Link
WO (1) WO2024242973A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6055731A (en) 1998-12-23 2000-05-02 Wheel Technology Ltd. Razor with convex blade assembly
US20010013174A1 (en) * 1998-01-20 2001-08-16 Wheel Technology Ltd. Electric razor with direct contact roller-mounted blades
US20060218793A1 (en) 2005-03-31 2006-10-05 Wheel Technology Ltd. Electric razor with helical filament winding
US20220080607A1 (en) * 2019-01-22 2022-03-17 Hybrid Razor Ltd. Shaving apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010013174A1 (en) * 1998-01-20 2001-08-16 Wheel Technology Ltd. Electric razor with direct contact roller-mounted blades
US6442840B2 (en) 1998-01-20 2002-09-03 Wheel Technology Ltd. Electric razor with direct contact roller-mounted blades
US6055731A (en) 1998-12-23 2000-05-02 Wheel Technology Ltd. Razor with convex blade assembly
US20060218793A1 (en) 2005-03-31 2006-10-05 Wheel Technology Ltd. Electric razor with helical filament winding
US20220080607A1 (en) * 2019-01-22 2022-03-17 Hybrid Razor Ltd. Shaving apparatus

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