EP0366139B1 - Nassrasierer - Google Patents

Nassrasierer Download PDF

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Publication number
EP0366139B1
EP0366139B1 EP19890119937 EP89119937A EP0366139B1 EP 0366139 B1 EP0366139 B1 EP 0366139B1 EP 19890119937 EP19890119937 EP 19890119937 EP 89119937 A EP89119937 A EP 89119937A EP 0366139 B1 EP0366139 B1 EP 0366139B1
Authority
EP
European Patent Office
Prior art keywords
projections
fact
base
skin
pillars
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.)
Expired - Lifetime
Application number
EP19890119937
Other languages
English (en)
French (fr)
Other versions
EP0366139A3 (de
EP0366139A2 (de
Inventor
Alan Crook
Oliver David Oglesby
Brian Oldroyd
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
Original Assignee
Gillette Co LLC
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 Gillette Co LLC filed Critical Gillette Co LLC
Publication of EP0366139A2 publication Critical patent/EP0366139A2/de
Publication of EP0366139A3 publication Critical patent/EP0366139A3/de
Application granted granted Critical
Publication of EP0366139B1 publication Critical patent/EP0366139B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B26B21/40—Details or accessories
    • B26B21/4012—Housing details, e.g. for cartridges
    • B26B21/4018—Guard elements
    • 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
    • B26B21/40—Details or accessories
    • B26B21/4012—Housing details, e.g. for cartridges
    • B26B21/4025—Cap elements

Definitions

  • This invention relates to razors having one or more blades and skin engaging surfaces arranged ahead of and/or behind the blade edge or edges.
  • the invention is applicable to razors of various forms, such as so-called 3-piece razors, one-piece, or disposable razors and to razors in which the head is formed by a replaceable blade cartridge.
  • the skin engaging surfaces are formed as cap and guard members, the cap member being positioned behind the blade edges(s) and the guard member ahead of the edge(s).
  • the present invention resides broadly in providing the skin engaging cap and/or guard surfaces with configurations or textures designed to promote pleasant tactile sensations, in use of the razors, which tend to mask the sensations caused by contact of the blade edge(s) with the skin and more significantly with the facial hairs as they are severed.
  • European Patent Application 0 254 491 published 27/01/88 discloses a guard bar for a razor head having closely spaced knurls with apices defining a discontinuous upper surface.
  • a safety razor having one or more blades and a skin-engaging surface such as guard or cap having projections extending therefrom, characterized by the fact that the projections are upstanding straight filaments extending throughout their length away from the respective surface and present at a density of at least 100 per sq. mm, said filaments having a uniform length of 0.3 to 2.00 mm and diameters in the range of 1.5 to 3.2 x 10 -2 mm.
  • the invention also resides in a safety razor in which the projections comprise longitudinal fins generally parallel to the blade edge(s) and flexible under normal shaving forces in directions transverse to the blade edge(s), and having a height in the range of 0.5 to 2.5 mm, a ratio of height to base thickness in the range of 2:1 to 5:1, and a spacing between adjacent longitudinal rows of 0.3 to 1.5 mm.
  • the invention also resides in a safety razor in which the projections comprise mutually transverse walls tapering to a thin edge, some of said walls being generally parallel to the blade edges and some of said walls being generally perpendicular to the blade edge so as to form a plurality of square cells 0.3 to 1.0 mm across, 0.5 to 2.5 mm high and having an aspect ratio of height to thickness at the base of 2:1 to 5:1.
  • the invention also resides in a safety razor in which the projections comprise a plurality of individual upstanding pillars which are relatively flexible or are set in an elastomeric base which permits flexure of the pillars about their lower ends, the pillars being arranged in a plurality of parallel rows with a spacing between pillars in each row, and between adjacent longitudinal rows, in the range of 0.6 to 1.5 mm.
  • the skin engaging surfaces of the razor head or cartridge are provided in one form or another with projections whose function is to provide frequent stimulation of the individual nerve zones at a low but adequate pressure level.
  • the pressures are controlled by making the projections flexible and by varying their density to achieve sufficient but not excessive stimuli.
  • FIG. 1 is a perspective view illustrating a cartridge body 1 of moulded construction (usually composed of a number of individual mouldings) in which are permanently secured a pair of blades 2, 3 whose cutting edges are disposed to act in tandem upon the skin.
  • the body is formed to provide a guard member 4 and a cap member 6 having skin engaging surfaces 7 and 8, respectively, to engage the skin ahead of and behind the blade edges.
  • one or both of the surfaces 7 and 8 is or are provided with a configured surface essentially comprising a plurality of spaced projections.
  • the surfaces are formed by spray flock coatings, e.g. of nylon, acetate or acrylic filaments having lengths of 0.3 to 2.00, and diameters of (1.5 to 3.2) x 10 -2 .
  • the filaments are applied at a density of 100 to 500 per sq. mm.
  • the filaments may be disposed perpendicular to the skin engaging surface in question, or may be inclined up to 60° from the perpendicular, either forwardly or rearwardly relative to the shaving direction, and they may be orientated differently in different regions of the skin engaging surfaces.
  • the surface is formed with a square grid pattern of mutually transverse walls 11, each tapering to a very thin edge.
  • Each square cell 12 thus formed may be some 0.3 to 1.0 across, with its walls 0.5 to 2.5 high and with an "aspect ratio" of height to thickness of base in the range of 2:1 to 5:1.
  • the structure may be completely open, as shown in Fig. 2 or, as illustrated in Fig. 3, it may have a continuous base 13.
  • the individual projections 11A are spaced apart in respective, mutually transverse rows to form rectangular cells open at their corners and the base 13 has apertures 14 at the intersection of each group of four adjacent projections to facilitate clearance of shaving debris.
  • the corresponding projections are formed as continuous longitudinal fins 11B.
  • the fins may be spaced apart by 0.3 to 1.0, with a height of 0.5 to 2.5 and an aspect ratio in the range 2:1 to 5:1.
  • Fig. 5 the fins are perpendicular to the base 13 but in Fig. 6 they are shown inclined at an angle of about 30° or more to the perpendicular, and forwardly relative to the shaving direction, indicated by the arrow 'S'.
  • the fins may alternatively be set to slope rearwardly relative to shaving direction at an angle of up to 30° beyond the perpendicular.
  • Fig. 7 illustrates a variant of Fig. 5 in which the fins 11C, instead of being continuous, are interrupted at intervals along their lengths. They may also be inclined, either forwardly or rearwardly, as described in relation to Fig. 6.
  • the skin engaging surfaces are formed by mouldings of synthetic elastomeric materials. They may be formed integrally with the basic cap or guard structures, or as separate mouldings which are then attached to underlying cap and guard structures. This latter approach lends itself particularly well, but not exclusively, to incorporation in razor cartridges of the conventional form currently marketed widely in the UK and elsewhere.
  • Fig. 8 illustrates another form of the invention in which the skin engaging surfaces are formed with individual pillars 14.
  • the pillars may have a height in the range of 0.5 to 2.5 with an aspect ratio of height to base diameter of 2:1 to 5:1 and with a spacing between adjacent pillars in each row and between adjacent rows of pillars of 0.6 to 1.5.
  • the base 13 and pillars 14 may be integrally moulded in one material which is relatively flexible, or the pillars might be made of a more rigid material set in an elastomeric base 13 which permits flexure of the individual pillars about their lower ends.
  • the precise arrangement and dimensioning of the fins, walls, pillars or other projections will be dependent in part on the flexibility of the particular materials selected, which will normally have a hardness of less than 90 Shore A.

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

Claims (9)

  1. Sicherheitsrasierer mit einer oder mit mehreren Klingen (2, 3) und mit einer Hauteingriffsoberfläche, wie zum Beispiel einem Schutzelement (7) oder einer Kappe (8), mit sich davon erstreckenden Vorsprüngen, dadurch gekennzeichnet, daß es sich bei den Vorsprüngen um aufrechte, gerade Fäden handelt, die sich über ihre gesamte Länge von der entsprechenden Oberfläche weg erstrecken, und wobei die Vorsprünge in einer Dichte von mindestens 100 je mm2 vorhanden sind, und wobei die Fäden eine einheitliche Länge von 0,3 bis 2,00 mm und Durchmesser im Bereich von 1,5 bis 3,2 x 10-2 mm aufweisen.
  2. Sicherheitsrasierer mit einer oder mit mehreren Klingen (2, 3) und mit einer Hauteingriffsoberfläche, wie zum Beispiel einem Schutzelement (7) oder einer Kappe (8), mit sich davon erstreckenden Vorsprüngen, dadurch gekennzeichnet, daß es sich bei den Vorsprüngen um longitudinale Rippen (11B, Figuren 5-6) handelt, die allgemein parallel zu der bzw. den Klingenschneiden sind, und die bei normalen Rasierkräften in zu der bzw. den Klingenschneiden querverlaufenden Richtungen flexibel sind, wobei die Vorsprünge eine Höhe im Bereich von 0,5 bis 2,5 mm, ein Verhältnis zwischen der Höhe und der Basisdicke im Bereich von 2:1 bis 5:1 und einen Zwischenabstand zwischen benachbarten longitudinalen Rippen von 0,3 bis 1,5 mm aufweisen.
  3. Rasierer nach Anspruch 2, dadurch gekennzeichnet, daß die Rippen (11B) von deren Basen in einem spitzen Winkel zu der Rasierrichtung nach oben und nach vorne oder nach hinten abgeschrägt sind.
  4. Rasierer nach Anspruch 2, dadurch gekennzeichnet, daß die Rippen (11C, Figur 7) entlang ihren Längen in Abständen unterbrochen sind.
  5. Sicherheitsrasierer mit einer oder mit mehreren Klingen (2, 3) und mit einer Hauteingriffsoberfläche, wie zum Beispiel einem Schutzelement (7) oder einer Kappe (8), mit sich davon erstreckenden Vorsprüngen, dadurch gekennzeichnet, daß es sich bei den Vorsprüngen um zueinander transversale Wände (11, Figuren 2-3) handelt, die zu einer dünnen Kante konisch zulaufen, wobei einige der genannten Wände allgemein parallel zu den Klingenschneiden sind, und wobei einige der Wände allgemein senkrecht zu der Klingenschneide verlaufen, so daß sie eine Mehrzahl quadratischer Zellen bilden, die eine Breite von 0,3 bis 1,0 mm, eine Höhe von 0,5 bis 2,5 mm und an der Basis ein Längenverhältnis der Höhe zu der Dicke von 2:1 bis 5:1 aufweisen.
  6. Rasierer nach Anspruch 5, dadurch gekennzeichnet, daß die Wände (11A, Figur 4) integral mit der Basis (13) ausgebildet sind, und wobei sie an der Schnittstelle jeder Anordnung von vier angrenzenden Wänden Öffnungen (14) aufweisen.
  7. Sicherheitsrasierer mit einer oder mit mehreren Klingen (2, 3) und mit einer Hauteingriffsoberfläche, wie zum Beispiel einem Schutzelement (7) oder einer Kappe (8), mit sich davon erstreckenden Vorsprüngen, dadurch gekennzeichnet, daß es sich bei den Vorsprüngen um eine Mehrzahl einzelner aufrechter Pfeiler (14, Figur 6) handelt, die verhältnismäßig flexibel sind, oder die in einer elastomeren Basis sitzen, die ein Biegen der Pfeiler um deren untere Enden ermöglicht, wobei die Pfeiler in einer Mehrzahl paralleler Reihen mit Zwischenabständen zwischen den Pfeilern in jeder Reihe und zwischen benachbarten Längsreihen im Bereich von 0,6 bis 1,5 mm angeordnet sind.
  8. Rasierer nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Vorsprünge aus einem synthetischen, elastomeren Werkstoff gestaltet sind.
  9. Rasierer nach Anspruch 8, dadurch gekennzeichnet, daß die Vorsprünge einzeln in eine Basis aus dem synthetischen, elastomeren Werkstoff gesetzt werden, so daß eine Biegung um die unteren Enden der Vorsprünge möglich ist, wobei die Vorsprünge aus einem starreren Werkstoff als die Basis gestaltet sind.
EP19890119937 1988-10-28 1989-10-26 Nassrasierer Expired - Lifetime EP0366139B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888825268A GB8825268D0 (en) 1988-10-28 1988-10-28 Safety razors
GB8825268 1988-10-28

Publications (3)

Publication Number Publication Date
EP0366139A2 EP0366139A2 (de) 1990-05-02
EP0366139A3 EP0366139A3 (de) 1990-07-25
EP0366139B1 true EP0366139B1 (de) 1996-09-18

Family

ID=10645939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890119937 Expired - Lifetime EP0366139B1 (de) 1988-10-28 1989-10-26 Nassrasierer

Country Status (10)

Country Link
EP (1) EP0366139B1 (de)
JP (1) JP2809779B2 (de)
BR (1) BR8907724A (de)
CA (1) CA2000772C (de)
DE (1) DE68927220T2 (de)
ES (1) ES2091759T3 (de)
GB (1) GB8825268D0 (de)
GR (1) GR3021079T3 (de)
SG (1) SG48421A1 (de)
WO (1) WO1990005047A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015131496A1 (zh) * 2014-03-05 2015-09-11 黄志坚 剃须刀刀头

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9022128D0 (en) * 1990-10-11 1990-11-21 Gillette Co Safety razors
USRE36816E (en) * 1992-05-13 2000-08-15 The Gillette Company Guard for razor blade assembly
US5249361A (en) * 1992-05-13 1993-10-05 The Gillette Company Guard for razor blade assembly
US5416973A (en) * 1993-09-30 1995-05-23 The Gillette Company Razors
US6944952B1 (en) 1994-07-01 2005-09-20 The Gillette Company Shaving system
US6594904B1 (en) 1994-07-01 2003-07-22 The Gillette Company Shaving system
WO1996001171A1 (en) * 1994-07-01 1996-01-18 The Gillette Company Skin engaging member for razor blade assembly
US5903979A (en) * 1994-07-13 1999-05-18 The Gillette Company Safety razors
US6298558B1 (en) 1994-10-31 2001-10-09 The Gillette Company Skin engaging member
GB9502268D0 (en) * 1995-02-06 1995-03-29 Gillette Co Razors
US5953819A (en) * 1995-02-06 1999-09-21 The Gillette Company Razors
US5689883A (en) * 1995-05-08 1997-11-25 Warner-Lambert Company Shaving implement
US5794343A (en) * 1997-05-12 1998-08-18 The Gillette Company Razor blade assembly
US6014918A (en) * 1998-10-28 2000-01-18 Warner & Lambert Company Transcutaneous electric nerve stimulator razor system
US6167625B1 (en) * 1999-05-18 2001-01-02 Warner-Lambert Company Shaving implement
US20110203113A1 (en) * 2010-02-25 2011-08-25 Xiandong Wang Razor Cartridge With Improved Cap Structure
USD965887S1 (en) 2020-05-20 2022-10-04 The Gillette Company Llc Shaving razor guard bar

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068085A (en) * 1935-02-27 1937-01-19 Nathan M Stanley Safety razor
US3138865A (en) * 1960-08-13 1964-06-30 Meyer Eugen Safety razor having skin-stretching and guiding means
US3909939A (en) * 1973-08-23 1975-10-07 Colombo Winifred M Safety razor having a row of short convergently slanted counter-stretching tension grooves extending along the guard bar
GB1557177A (en) * 1975-09-12 1979-12-05 Wilkinson Sword Ltd Shaving units
US4189832A (en) * 1978-06-19 1980-02-26 The Gillette Company Shaving implement
NL8000884A (nl) * 1980-02-13 1981-09-16 Philips Nv Scheerapparaat.
US4741103A (en) * 1986-07-25 1988-05-03 Warner Lambert Company Razor for shaving a face having pseudofolliculitis barbae

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015131496A1 (zh) * 2014-03-05 2015-09-11 黄志坚 剃须刀刀头

Also Published As

Publication number Publication date
DE68927220T2 (de) 1997-04-03
BR8907724A (pt) 1991-07-30
SG48421A1 (en) 1998-04-17
CA2000772A1 (en) 1990-04-28
DE68927220D1 (de) 1996-10-24
CA2000772C (en) 1997-03-04
EP0366139A3 (de) 1990-07-25
GR3021079T3 (en) 1996-12-31
JP2809779B2 (ja) 1998-10-15
JPH04502413A (ja) 1992-05-07
EP0366139A2 (de) 1990-05-02
ES2091759T3 (es) 1996-11-16
GB8825268D0 (en) 1988-11-30
WO1990005047A1 (en) 1990-05-17

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