EP2219832B1 - Rasoir doté d'un élément de lame de rasage fixé de manière flottante - Google Patents

Rasoir doté d'un élément de lame de rasage fixé de manière flottante Download PDF

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Publication number
EP2219832B1
EP2219832B1 EP08844810A EP08844810A EP2219832B1 EP 2219832 B1 EP2219832 B1 EP 2219832B1 EP 08844810 A EP08844810 A EP 08844810A EP 08844810 A EP08844810 A EP 08844810A EP 2219832 B1 EP2219832 B1 EP 2219832B1
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EP
European Patent Office
Prior art keywords
shaving blade
shaving
blade member
unit
shoulder
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
EP08844810A
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German (de)
English (en)
Other versions
EP2219832A1 (fr
Inventor
Russell Stuart Avens
Stephen Leonard Rawle
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.)
Gillette Co LLC
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Gillette Co LLC
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Publication date
Application filed by Gillette Co LLC filed Critical Gillette Co LLC
Publication of EP2219832A1 publication Critical patent/EP2219832A1/fr
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Publication of EP2219832B1 publication Critical patent/EP2219832B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/22—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously
    • B26B21/222—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit
    • B26B21/227—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit with blades being resiliently mounted in the changeable unit

Definitions

  • the present invention relates to a razor suitable for wet shaving wherein the razor comprises a cartridge that includes a floatably secured shaving blade member for provision of a conforming shave.
  • the clips of commercially available razor serve an important purpose of keeping the shaving blades secured to the razor cartridge as it is known e.g. from GB 2092052 A , which discloses the preamble of claim 1.
  • the present invention relates to a shaving blade unit comprising a shaving cartridge having a floatably secured shaving blade member wherein said cartridge comprises:
  • the shaving blade unit 10 comprises a shaving cartridge 15 having a floatably secured shaving blade member 20 while the cartridge 15 comprises a housing 25 having a front wall 26, a rear wall 27, and opposing side walls 28 extending between said front and rear walls 26, 27.
  • the shaving blade member 20 has opposing ends 21 with a shoulder 22 at each end 21. Each shoulder 22 rests along a respective said side wall 28 with a cutting edge 23 of the shaving blade member 20 is facing a front surface 25a of the housing 25.
  • the cartridge 15 additionally includes a resilient member 30 that is disposed rearward of the shaving blade member 20.
  • This resilient member 30 is secured to a rear surface 25b of the housing 25 by a shaving blade member retainer 35.
  • the resilient member 30 acts to provide a forward biasing force to the shaving blade member 20 such that contact between the shoulder 22 and its respective side wall 28 is at least maintained when the unit 10 is removed from a skin surface during shaving.
  • the housing 25 serves as a carrier for the shaving blade member 20 within the unit 10 and may be formed from injection molded plastics.
  • suitable plastic materials include, but are not limited to, Xylex® resin (a transparent blend of polycarbonate and an amorphous polyester available from SABIC Innovative Plastics), Zylar® (a water clear styrene methylmethacrylate copolymer that has been modified for impact which is available from NOVA Chemicals), and Noryl® (which is a class modified PPE resins consists of amorphous blends of PPO polyphenylene ether resin and polystyrene available from SABIC Innovative Plastics).
  • the shaving blade member retainer 35 may be formed from the same materials as the housing 25.
  • the retainer 35 may additionally be formed separately from the housing 25 and attached thereto or it may be integrally formed with the housing 25 via extrusion molding etc.
  • the retainer 35 secures the resilient member 30 to the rear of the shaving blade member 20.
  • the resilient member 30 exhibits a relatively stationary surface upon which the shaving blade member 20 may exert force against during shaving use and times of non-use by a consumer.
  • This biasing force serves to provide shaving blade members that are able to conform to the surface of the skin more readily but with the appropriate amount of give that allows for a comfortable shave. At times, the forward biasing force may be sufficient to maintain contact between the shoulder 22 and the adjacent side wall 28 when the unit 10 is contacted with the skin surface during shaving.
  • the retainer 35 comprises a channel 36 in which the resilient member 30 may rest.
  • the channel 36 further secures the resilient member 30 within the cartridge 15.
  • the cross-sectional shape of the channel 36 may take any number of forms, e.g., semicircular, rectangular, slitted, triangular, etc., depending on whatever is most suitable given the shape of the resilient member 30.
  • FIG. 4 shows cross section at x of FIG. 1 wherein the resilient member is round.
  • FIGS. 3 and 5 show a cross section at x in a shaving blade unit of the present invention where the resilient member and mating channel comprise a rectangular and triangular cross sections, respectively.
  • the resilient member 30 may have a cross-sectional shape of any type so long as it is a shape that mates with the channel's shape (when channel 36 is present) to provide a snug configuration of the two components. Furthermore, rear portions of the shaving blade members 20 contact the resilient member 30 to provide the biasing force.
  • the resilient member 30 may be formed of a number of different materials to provide the relatively responsive return that is characteristic of this component.
  • the resilient member 30 is selected from the group consisting of solid or hollow elastomeric tubing, solid or hollow rubber tubing, foam forms, coils, spring fingers, and combinations thereof.
  • the resilient member 30 may comprise a single component that is paired with its respective retainer 35 where the resilient member 30 runs along the length of the retainer 35 or substantially the entire length of the retainer 35.
  • the resilient member 30 may occur in a plurality with a single retainer 35 such that a single member is disposed rearward of each shaving blade member 20 where there is also a plurality of shaving blade members 20 within a unit 10.
  • a section of solid or hollow elastomeric tubing that is placed with one of its round ends (serving as a resilient member 30) contacting the retainer 35 or the channel 36 of the retainer 35 while an opposing end of the tubing portion is contacting a rear portion of the shaving blade member 20.
  • FIGS. 7a and 7b show a single retainer of the unit of FIG. 6 without the shaving blade members along with a cross section of the same retainer.
  • the retainer 35 may comprise a recess 37 to receive at least a portion of the shaving blade member 20.
  • the recess 37 may be formed in any shape that easily accommodates the shaving blade member.
  • a plurality of such slitted recesses 37 are shown in FIG. 8 , which is a cross section at y of FIG. 1 .
  • the recesses 37 are disposed forward of a lubricating strip 60, which is disposed after the shaving blade members 20.
  • Such recesses 37 may be spaced at regular intervals along a length of the retainer 35, where the length runs from the rear wall 27 to the front wall 26 of the housing when the retainer 35 is joined to the housing 25.
  • the recesses 37 may range in from about 0.15 mm to about 0.25 mm, about 0.16 mm to about 0.23 mm, from about 0.17 mm to about 0.21 mm, from about 0.17 mm to about 0.19 mm, or even about 0.18 mm. Regardless of the recess 37 width, it is important that to the extent there is unoccupied area within the recess 37, steps must be taken to ensure that the shaving blade member 20 does not move in a deleterious manner in the recess 37 when shaving occurs such that cutting of the skin is prevented. There may be a plurality of recesses 37 in a retainer 35 that run along the length of the retainer 35 to accommodate a plurality of shaving blade members 20.
  • the plurality of retainers 35 disposed along the length of the cartridge tends to provide an heightened balance and support of the shaving blade member(s) contained within the cartridge 15.
  • FIGS. 1 and 2 there are three retainer(s) 35 disposed along the length of the cartridge 15.
  • Suitable shaving blade members 20 may comprise a shaving blade alone which has been bent or a shaving blade which has been joined to a bent blade support.
  • Suitable shaving blade members are disclosed in US Patent 6804886 and US Serial Applications 11/400989 and 11/401131 .
  • the shaving blade members may also have cutting edges 23 with the same or varying tip radii, the latter of which is disclosed in US Patent Publications 2007/0227008A1 , 2007/0227009A1 , 2007/0227010A1 .
  • each opposing end 21 of the shaving blade member 20 is no more than about 5 mm, 4mm, 3 mm, 2 mm, 1 mm, or even 0.5 mm from the adjacent side wall 28. Therefore, it is envisioned that various embodiments of this invention shall include units that are free of clips disposed at opposing ends 21 of the shaving blade member(s).
  • the shoulder 22 which resides at the opposing end 21 of each shaving blade member 20 (as shown in FIG. 2 ).
  • the shoulder 22 is a cut out of the shaving blade member's opposing end 21 that is disposed at the member's 20 upper corner edge.
  • the elimination of this shaving blade member 20 edge provides a surface that can easily abut and conform to the side wall 28 of the housing 25, particularly at its rear surface 25a.
  • the shoulder 22 is particularly useful in allowing the shaving blade member 20 to remain a prescribed geometry position as described in US Patent 6212777 . It has been well established that by achieving and maintaining the correct blade geometry a more comfortable and closer shave results.
  • this shoulder may have a depth of from about 0.5 mm to about 2.0 mm and a width (from opposing end 21 toward a center of shaving blade member 20) of from about 0.5 mm to about 1.5 mm and is formed by a process selected from the group consisting of laser cutting, metal stamping, machining methods, and combinations thereof.
  • the unit of the present invention shall be paired with a handle 50 to form a usable razor.
  • the handle 50 may be removably attachable to the cartridge or may be integrally formed with the cartridge.
  • FIGS. 9 and 10 illustrate a removable handle that includes an ejection button 45 which may be depressed to separate the handle 50 from the unit 10.
  • a cartridge hood 40 may also be paired to the cartridge 15 to form the unit 10. Particularly in the instance when a removable handle is implemented the cartridge hood serves as a connection point between the handle 50 and the cartridge 15. It often aids in the maneuverability afforded a shaver when trying to replace the cartridge with a new cartridge when the shaving blade members have been dulled by continued use or unintended damage to the cutting edge 21 of the shaving blade member.
  • the floatable securing of the shaving blade member 20 within a cartridge 15 comprises the steps of providing a housing 25 for a cartridge 15 where the housing 25 comprises a front wall 26, a rear wall 27, and opposing side walls 28 extending between the front and rear walls 26, 27; resting a shaving blade member 20, having opposing ends 21 with a shoulder 22 at each end 21, at its shoulder 22 along the side wall 28; positioning a resilient member 30 rearward of the shaving blade member 20; securing the resilient member 30 and the shaving blade member 20 with a shaving blade member retainer 35; wherein the resilient member 30 provides a forward biasing force to the shaving blade member 20 such that contact between said shoulder 22 and said side wall 28 is at least maintained when said unit 10 is removed from a skin surface during shaving.

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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 (13)

  1. Unité de lames de rasage (10) comprenant une cartouche de rasage (15) ayant un élément de lame de rasage (20) fixé de manière flottante, dans laquelle ladite cartouche (15) comprend :
    a. un logement (25) ayant une paroi avant (26), une paroi arrière (27), et des parois latérales opposées (28) s'étendant entre lesdites parois avant (26) et arrière (27) ;
    b. ledit élément de lame de rasage (20) ayant des extrémités opposées (21) avec un épaulement (22) à chaque extrémité (21) et dans laquelle ledit épaulement (22) repose le long de ladite paroi latérale (28) et dans laquelle un bord de coupe (23) dudit élément de lame de rasage (20) fait face à une surface avant (25a) dudit logement (25) ;
    c. un élément élastique (30) disposé à l'arrière dudit élément de lame de rasage (20) qui est fixé par un organe de retenue d'élément de lame de rasage (35) ; ladite unité de lames de rasage étant caractérisée en ce que :
    ledit organe de retenue d'élément de lame de rasage (35) a un canal (36) sur sa longueur dans lequel l'élément élastique est renfoncé et ledit élément élastique (30) fournit une force de sollicitation vers l'avant sur ledit élément de lame de rasage (20) de telle sorte que ledit contact entre ledit épaulement (22) et ladite paroi latérale (28) est au moins maintenu lorsque ladite unité (10) est retirée d'une surface de la peau durant le rasage.
  2. Unité de lames de rasage (10) selon la revendication 1, dans laquelle ledit organe de retenue (35) comprend une ou plusieurs cavités (37) pour recevoir au moins une partie dudit élément de lame de rasage (20).
  3. Unité de lames de rasage (10) selon la revendication 2, dans laquelle lesdites une ou plusieurs cavités (37) sont sous la forme d'encoches.
  4. Unité de lames de rasage (10) selon la revendication 1, dans laquelle ladite cartouche (15) comprend deux organes de retenue d'élément de lame de rasage (35) disposés sur la longueur du logement (25).
  5. Unité de lames de rasage (10) selon la revendication 4, dans laquelle lesdits organes de retenue d'élément de lame de rasage (35) ne sont pas placés au niveau des parois latérales (28) dudit logement (25).
  6. Unité de lames de rasage (10) selon la revendication 1, dans laquelle ledit élément de lame de rasage (20) a des extrémités opposées (21) et dans lequel au moins l'une desdites extrémités opposées (21) d'élément de lame de rasage n'est pas à plus d'environ de 5 mm de ladite paroi latérale (28).
  7. Unité de lames de rasage (10) selon la revendication 1, dans laquelle ledit élément de lame de rasage (20) comprend une lame de rasage cintrée.
  8. Unité de lames de rasage (10) selon la revendication 1, dans laquelle ledit élément de lame de rasage (20) comprend une lame de rasage jointe à un support de lame.
  9. Unité de lames de rasage (10) selon la revendication 1, dans laquelle lesdits épaulements (22) sont formés par un procédé choisi dans le groupe constitué de découpe laser, estampage de métal, procédés d'usinage, et leurs combinaisons.
  10. Unité de lames de rasage (10) selon la revendication 1, dans laquelle ledit élément élastique (30) est choisi dans le groupe constitué de tubage plein, tubage creux, formes en mousse, formes élastomères, bobines, doigts compresseurs, et leurs combinaisons
  11. Unité de lames de rasage (10) selon la revendication 1, où ladite unité (10) est dépourvue d'attaches disposées aux extrémités opposées dudit élément de lame de rasage (20).
  12. Unité de lames de rasage (10) selon la revendication 1, dans laquelle la force de sollicitation vers l'avant est suffisante pour maintenir un contact entre ledit épaulement (22) et ladite paroi latérale (28) lorsque ladite unité (10) est mise en contact avec la surface de la peau durant le rasage.
  13. Rasoir de rasage comprenant :
    a. une cartouche de rasage (15) ayant un élément de lame de rasage (20) fixé de manière flottante, dans laquelle ladite cartouche (15) comprend :
    1) un logement (25) ayant une paroi avant (26), une paroi arrière (27), et des parois latérales opposées (28) s'étendant entre lesdites parois avant (26) et arrière (27) ;
    2) un élément de lame de rasage (20) ayant des extrémités opposées (21) avec un épaulement (22) à chaque extrémité (21) et dans laquelle ledit épaulement (22) repose le long de ladite paroi latérale (28) et dans laquelle un bord de coupe (23) dudit élément de lame de rasage (20) fait face à une surface avant (25a) dudit logement (25) ;
    3) un élément élastique (30) disposé à l'arrière dudit élément de lame de rasage (20) et fixé par un organe de retenue d'élément de lame de rasage (35) ; le rasoir de rasage étant caractérisé en ce que l'organe de retenue d'élément de lame de rasage (35) est pourvu d'un canal (36) sur sa longueur, dans lequel l'élément élastique (30) est renfoncé et dans lequel ledit élément élastique (30) fournit une force de sollicitation vers l'avant sur ledit élément de lame de rasage (20) de telle sorte que ledit contact entre ledit épaulement (22) et ladite paroi latérale (28) est au moins maintenu lorsque ladite unité (10) est retirée d'une surface de la peau durant le rasage ; et
    b. un manche (50) qui peut être fixé de façon amovible à ladite cartouche (15).
EP08844810A 2007-11-02 2008-10-30 Rasoir doté d'un élément de lame de rasage fixé de manière flottante Active EP2219832B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US159607P 2007-11-02 2007-11-02
PCT/IB2008/054518 WO2009057068A1 (fr) 2007-11-02 2008-10-30 Rasoir doté d'un élément de lame de rasage fixé de manière flottante

Publications (2)

Publication Number Publication Date
EP2219832A1 EP2219832A1 (fr) 2010-08-25
EP2219832B1 true EP2219832B1 (fr) 2012-02-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08844810A Active EP2219832B1 (fr) 2007-11-02 2008-10-30 Rasoir doté d'un élément de lame de rasage fixé de manière flottante

Country Status (9)

Country Link
EP (1) EP2219832B1 (fr)
JP (1) JP5053439B2 (fr)
KR (1) KR20100083163A (fr)
CN (1) CN101842197B (fr)
AT (1) ATE546261T1 (fr)
MX (1) MX2010004762A (fr)
RU (1) RU2437754C1 (fr)
TW (1) TW200940288A (fr)
WO (1) WO2009057068A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105196323A (zh) * 2015-09-20 2015-12-30 梁现 易清洁易拆装的新型剃须刀
CN112041133B (zh) * 2018-12-18 2021-10-26 任向荣 剃须单元及其制造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378634A (en) * 1979-12-07 1983-04-05 The Gillette Company Razor blade assembly
US4302876A (en) * 1980-03-14 1981-12-01 Warner-Lambert Company Razor blade with inclined edge
ES2090342T3 (es) * 1990-06-11 1996-10-16 Gillette Co Maquinilla de afeitar.
US5461781A (en) * 1994-07-01 1995-10-31 Warner-Lambert Company Dynamic shaving system with integral push clean bar and spring member
US20030159291A1 (en) * 1997-07-25 2003-08-28 Gregory Clark Shaving system with uniform shaving forces
US6839968B2 (en) * 2002-05-09 2005-01-11 The Gillette Company Shaving systems
US7621203B2 (en) * 2004-02-09 2009-11-24 The Gillette Company Shaving razors, and blade subassemblies therefor and methods of manufacture
PL1937444T3 (pl) * 2005-09-14 2013-08-30 Eveready Battery Inc Elementy mocowania nożyków dla wkładu nożyków do golenia
EP2029329B1 (fr) * 2006-06-20 2011-03-02 BIC Violex S.A. Tête de lame de rasoir et rasoir de sécurité comprenant une telle lame

Also Published As

Publication number Publication date
MX2010004762A (es) 2010-06-01
ATE546261T1 (de) 2012-03-15
JP5053439B2 (ja) 2012-10-17
KR20100083163A (ko) 2010-07-21
CN101842197A (zh) 2010-09-22
JP2011500255A (ja) 2011-01-06
TW200940288A (en) 2009-10-01
WO2009057068A1 (fr) 2009-05-07
EP2219832A1 (fr) 2010-08-25
RU2437754C1 (ru) 2011-12-27
CN101842197B (zh) 2013-03-27

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