WO1996004111A1 - Tete de rasoir avec dispositif de protection de la peau ameliore - Google Patents

Tete de rasoir avec dispositif de protection de la peau ameliore Download PDF

Info

Publication number
WO1996004111A1
WO1996004111A1 PCT/US1995/008145 US9508145W WO9604111A1 WO 1996004111 A1 WO1996004111 A1 WO 1996004111A1 US 9508145 W US9508145 W US 9508145W WO 9604111 A1 WO9604111 A1 WO 9604111A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
razor head
head according
skin
cap member
Prior art date
Application number
PCT/US1995/008145
Other languages
English (en)
Inventor
Charles J. Burout, Iii
Original Assignee
Warner-Lambert Company
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 Warner-Lambert Company filed Critical Warner-Lambert Company
Priority to AU29127/95A priority Critical patent/AU2912795A/en
Publication of WO1996004111A1 publication Critical patent/WO1996004111A1/fr

Links

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

Definitions

  • the present invention is directed to a razor head and, more particularly, to a razor head designed to provide enhanced protection to the surface being shaved.
  • the relatively small spaces provided between the skin-engaging elements tends to allow an accumulation of shaving debris, i.e., soap, hair, skin cells, etc., which can interfere with the desired flow of skin across the sharpened blade edges.
  • shaving debris i.e., soap, hair, skin cells, etc.
  • the present invention is directed to advances in the design, construction and the manufacture of razor heads.
  • the various aspects of the present invention are designed to improve the overall comfort of the shave by providing enhanced control over the skin surface being shaved as that skin flows over the sharpened edges of one or more blades.
  • the present invention is also designed to minimize the accumulation of shaving debris and to facilitate the easy removal of any shaving debris which does accumulate in spaces on the razor head.
  • One embodiment of the present invention comprises a razor head having at least two blades with sharpened edges and a first cap member having a skin-engaging surface positioned between the sharpened edges of the blades.
  • Another aspect of the present invention comprises providing a spacing between a blade and another skin- engaging element which tapers outwardly in order to provide a greater space between the blade and the skin- engaging element at an area remote from the cutting edge of the blade in order to facilitate rinsability during shaving .
  • Figure 1 is perspective view of a razor head according to one embodiment of the present invention.
  • Figure 2 is a cross-sectional view taken along lines 2-2 of Figure 1.
  • Figure 3 is an exploded view of the razor head shown in Figure 1.
  • Figure 4 is a bottom view of a cap member utilized with the embodiment shown in Figure 1.
  • Figure 5 is a front view of a cap member utilized with the embodiment shown in Figure 1.
  • Figure 6 is a cross-sectional view taken lines 6-6 of Figure 4.
  • Figure 7 is a top view of a spacer of the razor head illustrated in Figure 1.
  • Figure 8 is a rear view of the spacer shown in Figure 7.
  • Figure 9 is a cross-sectional view taken along lines 9-9 of Figure 7.
  • the various embodiments of the present invention comprise a razor head which provides enhanced control over the skin surface being shaved as that skin flows over the sharpened edges of one or more blades.
  • One embodiment of the present invention shown in the figures comprises a cap 10 comprising a shaving aid 20, cap blade 30, a spacer 40, a seat blade 50, a seat 60 comprising a guard bar 70 and attachment members 80 for attaching the illustrated razor head to a razor 90 (illustrated in part).
  • Guard bar 70 may comprise one or more resilient materials.
  • the spacer 40 comprises a forwardly disposed skin-engaging surface 42.
  • skin-engaging surface 42 has a skin-engaging surface area, of about 0.025 to 1.5 sq. cm., preferably about 0.4 to 0.6 sg. cm.
  • the spacer 40 is disposed in contact with seat blade 50 at a position proximate the cutting edge of blade 50.
  • the skin-engaging surface 42 of the illustrated spacer 40 is substantially flat and substantially parallel to an imaginary tangent line drawn between the cutting edges of seat blade 50 and cap blade 30.
  • the exposures of the seat and cap blades may optimally be up to about 0.01 inches.
  • Skin engaging surface 42 most preferably terminates before cap blade 30 thereby defining a space between the lower side of blade 30 and portions of spacer 40.
  • major portions of spacer 40 are also preferably tapered to provide a wider distance between spacer 40 and cap blade 30 at locations remote from the cutting edge of cap blade 30 than at a position closer to the cutting edge.
  • the provision of a space between spacer 40 and seat blade 30, as well as the general taper of portions of this spacer, are designed to facilitate the rinsability of the razor head during shaving.
  • the present design not only provides for easy rinsing of the shaving debris, but also minimizes the spaces in which shaving debris can accumulate by positioning skin engaging surface 42 very close to the cutting edge of seat blade 50.
  • cap 10 comprises a plurality of downwardly projecting pins 12 designed to pass through the blades, spacer 40 and to be received within complementary holes 61 in seat 60.
  • Pins 12 may be secured to seat 60 in any suitable manner such as by a snap-fit, press-fit, cold forming, or by sonic welding.
  • the various embodiments of the present invention may also be formed by insert molding.
  • illustrated spacer 40 comprises raised sections 43 surrounding holes through which pins 12 pass. Additionally, ribs 44 are positioned in spans between the through holes in order to more securely maintain cap blade 30 between spacer 40 and cap 10.
  • the degree of skin flow control provided by skin- engaging portion 42 is highly dependent upon the precise positioning of skin-engaging surface 42 relative to the cutting edge of seat blade 50. This positioning is also important to maintaining the desired exposure of cutting edge 55. Therefore, according to this illustrated embodiment, at least one sidewall 45 of a plurality of said holes is sufficiently resilient to bias spacer 40 rearwardly against pins 12.
  • the spacer 40 including rear walls 45 may be formed of a wide variety of materials such as acetals, nylon, polypropylene or more resilient materials such as thermoplastic elastomers or one of the resilient materials set forth below.
  • Figures 4, 5 and 6 are bottom, front and cross- sectional side views of cap 10, respectively, showing the positioning and downward extension of pins 12. While this illustrated embodiment of the present invention comprises four pins, other embodiments may comprise a greater or fewer number of such pins.
  • FIG 7, 8 and 9 are top, rear and cross-sectional side views, respectively, of spacer 40. These views more clearly illustrate the relative positioning of resilient members 45 within the through holes partly defined by raised portions 43 of spacer 40. Furthermore, these views illustrate the preferred gradual sloping of inclined surfaces 46 relative to raised portions 43. From the figures and description provided herein, it will be appreciated that inclined surfaces 46 define the lower surfaces of the spaces through which shaving debris can be rinsed during shaving.
  • guard member 70, skin-engaging surface 42 of spacer 40, and the skin-engaging portion 15 of cap 10 are formed of resilient materials which have a higher coefficient of friction with skin than conventional rigid polymers typically employed with razor heads.
  • suitable corrosion-resistant, resilient materials include Hercuprene 1000, 3000 series, Durometer 30 to 90 A scale available from J-Von, Leominster, MA; Kraton G series, Durometer 30 to 90 A scale available from Shell Chemical Co., Lisle, IL; and Santoprene 2271 series, Durometer 30 to 90 A scale available from Monsanto, Co.
  • both skin-engaging portion 42, spacer 40 and guard member 70 are formed of such resilient materials.
  • At least one of said blades further comprises a wire wrap such as one of those disclosed in U.S. Patent Numbers 1,035,548, 3,263,330, 3,505,734, 3,750,285 and 4,122,006, which are hereby incorporated by reference.

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 une tête de rasoir comportant au moins deux lames (30, 50) à bords effilés et un premier élément de couvercle (40) ayant une surface venant en contact avec la peau (42) placé entre les bords effilés des lames. Un autre aspect de la présente invention consiste à prévoir un espace entre une lame et un autre élément venant en contact avec la peau, qui est incliné vers l'extérieur, afin de laisser d'avantage d'espace entre la lame et l'élément venant en contact avec la peau, en un point éloigné du bord de coupe de la lame. Cela facilite le rinçage pendant le rasage.
PCT/US1995/008145 1994-07-29 1995-06-28 Tete de rasoir avec dispositif de protection de la peau ameliore WO1996004111A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU29127/95A AU2912795A (en) 1994-07-29 1995-06-28 Razor head with enhanced skin protection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28270194A 1994-07-29 1994-07-29
US08/282,701 1994-07-29

Publications (1)

Publication Number Publication Date
WO1996004111A1 true WO1996004111A1 (fr) 1996-02-15

Family

ID=23082743

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/008145 WO1996004111A1 (fr) 1994-07-29 1995-06-28 Tete de rasoir avec dispositif de protection de la peau ameliore

Country Status (4)

Country Link
AU (1) AU2912795A (fr)
IL (1) IL114733A0 (fr)
WO (1) WO1996004111A1 (fr)
ZA (1) ZA956319B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6550141B1 (en) 2000-07-28 2003-04-22 Warner-Lambert Company Razor heads with intermediate guard elements
WO2006135668A1 (fr) * 2005-06-10 2006-12-21 Eveready Battery Company, Inc. Element de securite inter-lames et son procede de fabrication
WO2010030595A1 (fr) * 2008-09-10 2010-03-18 The Gillette Company Rasoirs pour rasage, et cartouches
WO2011106370A1 (fr) * 2010-02-23 2011-09-01 The Gillette Company Ensemble cartouche de rasoir
RU2477217C1 (ru) * 2009-05-29 2013-03-10 Дзе Жиллетт Компани Гребенчатый защитный элемент для подравнивающего лезвия бритвенного прибора
EP2512761B1 (fr) 2009-12-18 2020-07-15 The Gillette Company LLC Cartouche des lames avec element sans enlèvement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272855A (en) * 1978-05-19 1981-06-16 Sulzer Brothers Limited Anchoring surface for a bone implant
GB2266486A (en) * 1992-05-02 1993-11-03 Wilkinson Sword Gmbh Razor blade unit for a wet razor
US5347714A (en) * 1993-02-18 1994-09-20 American Safety Razor Company Movable blade shaving cartridge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272855A (en) * 1978-05-19 1981-06-16 Sulzer Brothers Limited Anchoring surface for a bone implant
GB2266486A (en) * 1992-05-02 1993-11-03 Wilkinson Sword Gmbh Razor blade unit for a wet razor
US5347714A (en) * 1993-02-18 1994-09-20 American Safety Razor Company Movable blade shaving cartridge

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6550141B1 (en) 2000-07-28 2003-04-22 Warner-Lambert Company Razor heads with intermediate guard elements
WO2006135668A1 (fr) * 2005-06-10 2006-12-21 Eveready Battery Company, Inc. Element de securite inter-lames et son procede de fabrication
JP2008543374A (ja) * 2005-06-10 2008-12-04 エバレデイ バツテリ カンパニー インコーポレーテツド インターブレードガード及びその製造方法
AU2006258078B2 (en) * 2005-06-10 2012-07-19 Edgewell Personal Care Brands, Llc Inter-blade guard and method for manufacturing same
US7681314B2 (en) 2005-06-10 2010-03-23 Eveready Battery Company Inc. Inter-blade guard and method for manufacturing same
EP2272639A1 (fr) * 2005-06-10 2011-01-12 Eveready Battery Company, Inc. Cartouche de rasoir avec élément de sécurité inter-lames
CN102036792A (zh) * 2008-09-10 2011-04-27 吉列公司 剃刀和刀片架
WO2010030595A1 (fr) * 2008-09-10 2010-03-18 The Gillette Company Rasoirs pour rasage, et cartouches
CN102036792B (zh) * 2008-09-10 2013-07-17 吉列公司 剃刀和刀片架
US9221185B2 (en) 2008-09-10 2015-12-29 The Gillette Company Shaving razors and cartridges
RU2477217C1 (ru) * 2009-05-29 2013-03-10 Дзе Жиллетт Компани Гребенчатый защитный элемент для подравнивающего лезвия бритвенного прибора
EP2512761B1 (fr) 2009-12-18 2020-07-15 The Gillette Company LLC Cartouche des lames avec element sans enlèvement
WO2011106370A1 (fr) * 2010-02-23 2011-09-01 The Gillette Company Ensemble cartouche de rasoir

Also Published As

Publication number Publication date
ZA956319B (en) 1996-03-14
IL114733A0 (en) 1995-11-27
AU2912795A (en) 1996-03-04

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