EP3546147B1 - Dispositif d'épilation - Google Patents

Dispositif d'épilation Download PDF

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Publication number
EP3546147B1
EP3546147B1 EP18164821.3A EP18164821A EP3546147B1 EP 3546147 B1 EP3546147 B1 EP 3546147B1 EP 18164821 A EP18164821 A EP 18164821A EP 3546147 B1 EP3546147 B1 EP 3546147B1
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EP
European Patent Office
Prior art keywords
hair removal
handle
plastic material
head
removal device
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.)
Active
Application number
EP18164821.3A
Other languages
German (de)
English (en)
Other versions
EP3546147A1 (fr
Inventor
Joachim Krauss
Uwe Fischer
Roman Roeder
Andreas Peter
Uwe Ludaescher
Andreas Erndt
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.)
Braun GmbH
Original Assignee
Braun GmbH
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 Braun GmbH filed Critical Braun GmbH
Priority to EP18164821.3A priority Critical patent/EP3546147B1/fr
Priority to JP2019053002A priority patent/JP6903699B2/ja
Publication of EP3546147A1 publication Critical patent/EP3546147A1/fr
Application granted granted Critical
Publication of EP3546147B1 publication Critical patent/EP3546147B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/048—Complete cutting head being movable
    • 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3853—Housing or handle
    • B26B19/3866—Seals or dampers

Definitions

  • the present invention is concerned with a hair removal device, e.g. a dry shaver, a wet shaver or an epilator, comprising a handle, which encases e.g. a drive unit and an energy source, and a head, which is pivotably supported on the handle and comprises at least one hair removal unit coupled to the drive unit by means of a transmission converting a rotary motion of the drive unit into a movement of a driven part of the at least one hair removal unit.
  • a hair removal device e.g. a dry shaver, a wet shaver or an epilator
  • a handle which encases e.g. a drive unit and an energy source
  • a head which is pivotably supported on the handle and comprises at least one hair removal unit coupled to the drive unit by means of a transmission converting a rotary motion of the drive unit into a movement of a driven part of the at least one hair removal unit.
  • EP 2 404 716 B1 discloses an electrically powered shaver having a handle and a head with cutter elements which extend parallel to a pivot axis and which can swivel about the pivot axis, thereby permitting the cutters to follow the contours of the user's skin.
  • Pivoting of the head with respect to the handle is typically limited by abutment of a stop face of a stop element with a counter-stop element.
  • This limitation may be required for protecting other component parts of the device during usage or if the device is subject to external impact forces, e.g. when dropping the device.
  • abutment of the stop face with the counter-stop element may generate an undesired tactile and/or audible feedback to a user in the form of a clacking noise and the impression of a hard end stop.
  • EP 0 721 824 A2 discloses a hair removal device comprising a handle, which encases a drive unit, and a head, which is pivotably supported on the handle and comprises at least one hair removal unit coupled to the drive unit by means of a transmission converting a motion of the drive unit into a movement of a driven part of the at least one hair removal unit, wherein elastic elements are provided in order to ensure that no gap is formed between the head and the handle when the head is pivoted.
  • JPS597775U discloses a dry shaver having a pivoting shaver head having rubber damping stop elements provided on the lower side of the shaver head.
  • EP 2 875 915 A1 discloses a 4 link pivoting mechanism for a hair trimmer that is made from plastics and that has pivoting stops formed at the 4 link pivoting mechanism.
  • a hair removal device comprises a handle, which encases at least a drive unit and an energy source, and a head, which is pivotably supported on the handle and comprises at least one hair removal unit coupled to the drive unit by means of a transmission converting an, e.g. rotary or linear, motion of the drive unit into a movement of a driven part of the at least one hair removal unit. Pivoting of the head with respect to the handle is limited by abutment of at least one stop face of at least one stop element with at least one counter-stop element.
  • the at least one stop element is made by multi-component injection moulding from a first plastic material and at least one second plastic material which is softer than the first plastic material, wherein the at least one stop face is made from the second plastic material.
  • Multi-component injection moulding is a highly efficient method for producing component parts of different materials having material characteristics tailored to the respective requirements.
  • the combination of a harder or more rigid plastic material withstanding e.g. mechanical loads with a softer plastic material permits damping of the abutment limiting the pivoting of the head with respect to the handle. This increases user's comfort and enhances the sensation during use of the device.
  • the softer plastic material may cushion e.g. mechanical loads if the device is subject to external impact forces, e.g. when dropping the device.
  • Providing such a multi-purpose component part contributes in reducing cost and effort for producing and assembling the device due to a reduced number of component parts compared with separate component parts each fulfilling only one function.
  • the at least one stop element is made by multi-component injection moulding from a first plastic material and at least one second plastic material which is softer than the first plastic material.
  • the stop element may be made by two-component injection moulding, i.e. comprising only the first plastic material and a second plastic material.
  • the softer second plastic material may be a thermoplastic elastomer (TPE) or a (liquid) silicone rubber (LSR).
  • the first plastic material is typically a thermoplastic material which is rigid at ambient temperature, for example polypropylene (PP) or polybutylene terephthalate (PBT).
  • the hair removal device may comprise an outer housing and an inner housing hermetically encapsulating component parts which should be sealed off against humidity, for example the drive unit and/or the energy source.
  • the at least one stop element may be a shell or part of a shell assembly sealing at least a portion of the hair removal device off against the environment.
  • the stop element may be a portion of the outer housing or the inner housing.
  • the at least one stop element comprises at least one sealing portion, for example a sealing lip or the like, made from the second plastic material.
  • a component part of the hair removal device is made by two-component injection moulding or multi-component injection moulding, wherein the softer material fulfills a sealing function and in addition a function as a stop element.
  • the at least one stop element comprises at least one soft rib made from the second plastic material, wherein the soft rib exerts a biasing force on a component part abutting the soft rib.
  • the component part abutting the soft rib may be an axle, such that the soft rib removes clearances between the axle and further parts hinged to the axle.
  • the at least one stop element may comprise separate regions consisting of the softer second plastic material.
  • regions consisting of the softer second plastic material may be connected with each other, such that they form a common piece of the second plastic material.
  • the at least one stop face and the at least one sealing portion are connected with each other by a web made from the second plastic material.
  • the head of the hair removal device is pivotably supported on the handle of the device.
  • the pivoting of the head with respect to the handle may be a swiveling movement about the swiveling axis which is e.g. substantially parallel to the direction of the longitudinal movement of the cutter element.
  • the pivoting of the head with respect to the handle may be a tilting movement about a tilting axis which is e.g. substantially perpendicular to the direction of the longitudinal movement of the cutter element.
  • the head or the cutter element may be movable in a direction parallel to the main extension of the handle, e.g. a plunging movement with respect to the handle.
  • the head may be pivotably supported on the handle by means of at least two levers which are each pivotably hinged to a support of the handle and to the head, respectively.
  • the levers may form a so-called 4-bar-mechanism permitting a tilting movement of the head with respect to the handle.
  • at least one of the levers is a metal component which may have a substantially U-shaped cross-section.
  • a part of the support of the handle may be the stop element having at least one stop face made from the second plastic material for each lever.
  • each lever may comprise a portion forming the at least one counter-stop element.
  • the support of the handle is a lid hermetically sealing an inner housing of the handle, which inner housing encases the drive unit and the energy source.
  • the head may be supported on the handle pivotably about a swivel axis.
  • the head may comprise a frame supported on at least one, e.g. two, swivel bearings aligned with the swivel axis. Abutment of the frame with a component part which is constrained to the handle with respect to rotation about the swivel axis may limit pivoting of the head relative to the handle about the swivel axis.
  • the component part which is constrained to the handle with respect to rotation about the swivel axis is an, e.g. plate-shaped, head part, wherein at least one stop face made from the second plastic material is provided on the plate.
  • the head part or plate may have an opening receiving a drive shaft of the transmission. Still further, the at least two levers may be pivotably hinged to the head part or a further base plate which is constrained to the head part.
  • the further base plate may comprise two arms, wherein each arm comprises one of the swivel bearings.
  • the hair removal device may be a dry shaver, a wet shaver or an epilator.
  • the hair removal device comprises at least one hair removal unit having a foil-type upper cutter and a lower cutter with several blades.
  • the transmission may be coupled to the lower cutter for driving the lower cutter in a translational movement relative to the upper cutter.
  • the at least one hair removal unit may comprise two or more combs moving relative to each other for cutting or removing hairs.
  • a hair removal device 1 is depicted in Figure 1 which comprises a handle 2 and a head 3 having several hair removal units 4, 5.
  • the two hair removal units 4 each comprise a foil-type upper cutter and a lower cutter (not shown) with several blades which in use move axially with respect to the foil-type upper cutter for shearing off hairs.
  • the hair removal unit 5 comprises two combs moving relative to each other for cutting hairs.
  • the handle 2 has an elongate shape defining a main axis of the hair removal device 1.
  • the handle 2 may house component parts like a drive unit 6, an energy source, e.g. a rechargeable battery, a control unit or the like. This is schematically indicated in Figure 2 in dashed lines.
  • the head 3 is supported on the handle 2 such that the head 3 may perform a relative movement with respect to the handle 2 permitting the hair removal units to follow the contour of the user's skin.
  • the handle 2 comprises a support 7 which may be a lid sealing off an interior space which houses for example the drive unit 6 and the energy source.
  • Four levers are pivotably hinged to the support 7, wherein two levers may be connected with each other to form an, e.g. U-shaped, lever unit 8a, 8b.
  • the levers are further pivotably hinged to a base plate 9 which may be tilted, i.e. pivoted to the left and to the right in Figure 2 , relative to the support 7 by means of the levers.
  • the lever units may be sheet-metal parts.
  • the base plate 9 comprises two arms 10 each having a swivel bearing 11, which bearings 11 are located on a swivel axis I, for example substantially perpendicular to the main axis of the handle 2.
  • the hair removal units 4, 5 are mounted in a frame 12 which is pivotably supported on the arms 10 by the swivel bearings 11.
  • the swivel bearings 11 result in a gimbal-like mounting of the frame 12 with respect to the support 7 permitting a swivel movement about the swivel axis I and a tilting movement about an axis substantially perpendicular to the swivel axis I.
  • the frame 12 may be received in or may be part of a casing of the head 3 as indicated in Figure 1 . Further, the hair removal units 4, 5 may be movable with respect to the frame 12 and/or the casing of the head 3 in a plunging direction substantially parallel to the main extension of the handle 2.
  • each lever comprises a nose 13 in the vicinity of the end facing away from the hair removal units 4, 5.
  • the nose 13 of the left lever unit 8a contacts the support 7, thereby limiting tilting of the base plate 9 to the right.
  • the nose 13 of the right lever unit 8b would contact the support 7 if the base plate would be tilted to the left.
  • the support 7 defines a stop element and the nose 13 defines a counter-stop element which together limit pivoting of the head 3 with respect to the handle 2.
  • the support 7 is a component part of the hair removal device 1 which has to bear mechanical loads, for example due to the support of the head 3.
  • the support 7 mainly consists of a rigid material.
  • the support 7 is made by two-component injection moulding using a first rigid plastic material and a second softer plastic material.
  • the support 7 is one component part, it consists of at least two different materials, namely the rigid first plastic material and the softer second plastic material forming the stop face 14 for abutment with the nose 13. This results in a soft stop between the nose 13 and the support 7, thereby preventing undesired noise emission or the sensation of a hard stop.
  • stop face made from the second softer plastic material may be provided on the levers and/or on the frame 12.
  • Figure 4 depicts an interface between the frame 12 and the base plate 9, which interface comprises a soft stop.
  • the frame 12 is provided with an edge or protrusion contacting the base plate 9 or a separate plate 15 attached to the base plate 9 if that baseplate 9 is swiveled about swivel axis I as shown in Figure 4 .
  • This abutment of the plate 15 which defines a stop element and the frame 12 which defines a counter-stop element limits pivoting of the head 3 with respect to the handle 2 about swivel axis I.
  • the plate 15 is made by two-component injection moulding using a first rigid plastic material and a second softer plastic material.
  • At least the area of the plate 15 contacting the respective portion of the frame 12 for limiting the pivoting of the head 3 with respect to the handle 2, i.e. the stop face 16 of the plate 15, consists of the second softer plastic material, e.g. a thermoplastic elastomer. Again, this results in a soft stop limiting the pivoting of the head 3 with respect to the handle 2.
  • the stop face 16 may be provided directly on the base plate 9.
  • a stop face consisting of the second softer plastic material may be provided on the frame 12, for example on the edge or protrusion contacting the baseplate nine or of the plate 15 for limiting the pivoting of the head 3 with respect to the handle 2.
  • the component parts made by two-component injection moulding using a first rigid plastic material and a second softer plastic material, i.e. the support 7 and/or the plate 15, may have additional functions and/or additional areas consisting of the second softer plastic material.
  • the support 7 may be a lid hermetically closing an inner housing encasing for example the drive unit 6 and/or the energy source.
  • the support may be provided with a sealing lip consisting of the second softer plastic material for sealing of the lid (support 7) with respect to other inner housing components.
  • the sealing lip may be a separate portion of the second softer plastic material not directly connected with the stop face 16.
  • the sealing lip may be connected with the stop face 16 by a web of the second softer plastic material, e.g. channels used for distributing the second softer plastic material during injection molding.
  • the base plate 9 and/or the plate 15 may be a lid hermetically closing the head 3 with respect to the environment.
  • the baseplate 9 and/or the plate 15 may be provided with a sealing lip (not shown) consisting of the second softer plastic material for sealing of the lid with respect to other portions of the head 3.
  • the stop face 14 may be a separate portion of the second softer plastic material or may be connected with the sealing lip by a web of the second softer plastic material.
  • the second softer plastic material may have a portion formed as a soft rib provided on the base plate 9 and/or the plate 15.
  • the soft rib may be arranged such that it acts on a pivot axle of one of the lever units 8a, 8b connecting the baseplate 9 and/or the plate 15 with the support 7.
  • the soft rib may be arranged such that it is slightly compressed by abutment with the pivot axle , thereby eliminating clearances between the axle , the lever units 8a, 8b and the base plate 9 and/or the plate 15.
  • the stop face 14 may be a separate portion of the second softer plastic material or may be connected with the soft rib by a web of the second softer plastic material.
  • the electric dry shaver comprises a moveable shaver head which swiveling range is limited by stops elements having counter-stop elements made from a softer material than the stop element and thus softening the abutment when the shaver head reaches its extreme end positions. Almost no noise is therefore created by such shaver head movements even if those reach the end positions.
  • the counter-stop elements made form soft material, as e.g. TPE are made in multi-component injection molding process.
  • the part equipped with the soft counter stop element is provided with second functional soft component part either on the same side as the counter stop element or on the opposite side of the part. This second functional soft component part is provided to serve for a different purpose than a stop or counter-stop element, i.e. for providing a sealing lib or pretension protrusion rib. Therefore, the soft material counter-stop is not only cost efficiently provided by the multi component injection molding process but also the material serves for a double function in the same part.

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

Claims (14)

  1. Dispositif d'épilation comprenant un manche (2), qui enveloppe une unité d'entraînement, et une tête (3), qui est supportée en pivotement sur le manche (2) et comprend au moins une unité d'épilation (4, 5) accouplée à l'unité d'entraînement au moyen d'une transmission convertissant un mouvement de l'unité d'entraînement en un mouvement d'une partie entraînée de l'au moins une unité d'épilation (4, 5), dans lequel le pivotement de la tête (3) par rapport au manche (2) est limité par la butée d'au moins une face de butée (14, 16) d'au moins un élément de butée (7, 15) avec au moins un élément de contre-butée (8a, 8b, 12), caractérisé en ce que l'au moins un élément de butée (7, 15) est réalisé par moulage par injection multi-composants à partir d'une première matière plastique et d'une seconde matière plastique qui est plus souple que la première matière plastique, et en ce que le manche enveloppe une source d'énergie, en ce que l'au moins une face de butée (14, 16) est réalisée à partir de la seconde matière plastique, en ce que l'au moins un élément de butée (7, 15) comprend au moins une nervure souple réalisée à partir de la seconde matière plastique, dans lequel la nervure souple exerce une force de sollicitation sur une partie constitutive venant en butée contre la nervure souple et en ce que l'au moins une face de butée (14, 16) et ladite nervure souple sont reliées entre elles par une bande réalisée à partir de la seconde matière plastique.
  2. Dispositif d'épilation selon la revendication 1, dans lequel l'au moins un élément de butée (7, 15) est réalisé par moulage par injection à deux composants.
  3. Dispositif d'épilation selon la revendication 1 ou 2, dans lequel la première matière plastique est du polypropylène ou du polybutylène téréphtalate et/ou la seconde matière plastique est un élastomère thermoplastique ou un caoutchouc de silicone liquide.
  4. Dispositif d'épilation selon l'une quelconque des revendications précédentes, dans lequel l'au moins un élément de butée (7, 15) est une coque ou une partie d'un ensemble coque scellant au moins une partie du dispositif d'épilation (1) contre l'environnement, et dans lequel l'au moins un élément de butée (7, 15) comprend au moins une partie de scellement réalisée à partir de la seconde matière plastique.
  5. Dispositif d'épilation selon la revendication 4, dans lequel l'au moins une face de butée (14, 16) et l'au moins une partie de scellement et ladite nervure souple sont reliées entre elles par une bande réalisée à partir de la seconde matière plastique.
  6. Dispositif d'épilation selon l'une quelconque des revendications précédentes, dans lequel la tête (3) est supportée en pivotement sur le manche (2) au moyen d'au moins deux leviers (8a, 8b) qui sont chacun articulés en pivotement sur un support (7, 12) du manche (2) et sur la tête (3), respectivement.
  7. Dispositif d'épilation selon la revendication 6, dans lequel au moins une partie du support (7) du manche (2) est l'élément de butée (7) ayant au moins une face de butée (14) réalisée à partir de la seconde matière plastique pour chaque levier (8a, 8b), dans lequel chaque levier (8a, 8b) comprend une partie (13) formant l'au moins un élément de contre-butée.
  8. Dispositif d'épilation selon la revendication 6 ou 7, dans lequel le support (7) du manche (2) est un couvercle scellant hermétiquement un boîtier interne du manche (2), lequel boîtier interne enveloppe l'unité d'entraînement (6) et la source d'énergie.
  9. Dispositif d'épilation selon l'une quelconque des revendications 6 à 8, dans lequel au moins l'un des leviers (8a, 8b) est un composant métallique et/ou a une section transversale sensiblement en forme de U.
  10. Dispositif d'épilation selon l'une quelconque des revendications précédentes, dans lequel la tête (3) est supportée sur le manche (2) en pivotement autour d'un axe de pivotement (I), dans lequel la tête (3) comprend un cadre (12) supporté en pivotement sur l'axe de pivotement (I), et dans lequel la butée du cadre (12) avec une partie constitutive (9, 15) qui est contrainte au manche (2) par rapport à une rotation autour de l'axe de pivotement (I) limite le pivotement de la tête (3) par rapport au manche (2) autour de l'axe de pivotement (I).
  11. Dispositif d'épilation selon la revendication 10, dans lequel la partie constitutive (9, 15) qui est contrainte au manche (2) par rapport à la rotation autour de l'axe de pivotement (I) est une partie de tête avec une ouverture recevant un arbre d'entraînement de la transmission, dans lequel au moins une face de butée (16) réalisée à partir de la seconde matière plastique est prévue sur la partie de tête (9, 15).
  12. Dispositif d'épilation selon les revendications 6 et 11, dans lequel les au moins deux leviers (8a, 8b) sont articulés en pivotement sur la partie de tête (15) ou une plaque de base supplémentaire (9) qui est contrainte à la partie de tête (15).
  13. Dispositif d'épilation selon la revendication 12, dans lequel la plaque de base supplémentaire (9) comprend deux bras (10), dans lequel chaque bras (10) comprend l'un des paliers de pivotement (11).
  14. Dispositif d'épilation selon l'une quelconque des revendications précédentes, dans lequel l'au moins une unité d'épilation (4, 5) de la tête (3) comprend un élément coupant supérieur de type feuille et un élément coupant inférieur avec plusieurs lames, dans lequel la transmission est accouplée à l'élément coupant inférieur pour entraîner l'élément coupant inférieur dans un mouvement de translation par rapport à l'élément coupant supérieur.
EP18164821.3A 2018-03-29 2018-03-29 Dispositif d'épilation Active EP3546147B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18164821.3A EP3546147B1 (fr) 2018-03-29 2018-03-29 Dispositif d'épilation
JP2019053002A JP6903699B2 (ja) 2018-03-29 2019-03-20 除毛デバイス

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18164821.3A EP3546147B1 (fr) 2018-03-29 2018-03-29 Dispositif d'épilation

Publications (2)

Publication Number Publication Date
EP3546147A1 EP3546147A1 (fr) 2019-10-02
EP3546147B1 true EP3546147B1 (fr) 2023-05-24

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EP (1) EP3546147B1 (fr)
JP (1) JP6903699B2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4112246A1 (fr) * 2021-07-02 2023-01-04 Koninklijke Philips N.V. Ensemble de montage pour appareil de coupe de cheveux

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597775U (ja) * 1982-07-08 1984-01-19 九州日立マクセル株式会社 電気かみそり

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3699736B2 (ja) * 1995-01-11 2005-09-28 株式会社泉精器製作所 電気かみそり
AT2988U1 (de) * 1998-07-24 1999-08-25 Payer Lux Elektroprod Trockenrasierapparat
ATE457216T1 (de) * 2004-11-29 2010-02-15 Koninkl Philips Electronics Nv Rasierer mit scharnier zwischen dem gehäuse und dem scherkopf
DE102008031132A1 (de) * 2008-07-01 2010-01-07 Braun Gmbh Elektrisches Kleingerät zum Entfernen von Haaren
EP2404716B1 (fr) 2010-07-10 2012-09-26 Braun GmbH Appareil électrique de coupe de cheveux
EP2875915B1 (fr) * 2013-11-22 2019-05-22 Koninklijke Philips N.V. Unité de liaison et appareil de coupe de cheveux

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597775U (ja) * 1982-07-08 1984-01-19 九州日立マクセル株式会社 電気かみそり

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EP3546147A1 (fr) 2019-10-02
JP6903699B2 (ja) 2021-07-14
JP2019171050A (ja) 2019-10-10

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