EP0366139B1 - Rasoirs mécaniques - Google Patents

Rasoirs mécaniques 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
German (de)
English (en)
Other versions
EP0366139A3 (fr
EP0366139A2 (fr
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/fr
Publication of EP0366139A3 publication Critical patent/EP0366139A3/fr
Application granted granted Critical
Publication of EP0366139B1 publication Critical patent/EP0366139B1/fr
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.

Landscapes

  • 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. Rasoir de sûreté comprenant une ou plusieurs lames (2, 3) et une surface de contact avec la peau, par exemple d'un organe protecteur (7) ou d'un capuchon (8) ayant des saillies qui dépassent, caractérisé par le fait que les saillies sont des filaments rectilignes perpendiculaires dépassant sur toute leur longueur de la surface respective et ayant une densité d'au moins 100 /cm2, les filaments ayant une longueur uniforme comprise entre 0,3 et 2,00 mm et des diamètres compris entre 1,5 et 3,2.10-2 mm.
  2. Rasoir de sûreté comportant une ou plusieurs lames (2, 3) et une surface de contact avec la peau, par exemple d'un organe protecteur (7) ou d'un capuchon (8), ayant des saillies qui dépassent, caractérisé par le fait que les saillies comportent des ailettes longitudinales (11B, figures 5-6) qui sont parallèles de façon générale aux bords de lame et flexibles sous l'action des forces normales de rasage en direction transversale aux bords de lame, et ayant une hauteur comprise entre 0,5 et 2,5 mm, un rapport de la hauteur à l'épaisseur de base compris entre 2/1 et 5/1, et un espacement des ailettes longitudinales adjacentes compris entre 0,3 et 1,5 mm.
  3. Rasoir selon la revendication 2, caractérisé par le fait que les ailettes (11B) sont inclinées vers le haut et vers l'avant et vers l'arrière depuis leur base en formant un angle aigu avec la direction de rasage.
  4. Rasoir selon la revendication 2, caractérisé par le fait que les ailettes (11C, figure 7) sont interrompues à certains intervalles de leur longueur.
  5. Rasoir de sûreté comprenant une ou plusieurs lames (2, 3) et une surface de contact avec la peau, par exemple d'un organe protecteur (7)ou d'un capuchon (8) ayant des saillies qui dépassent, caractérisé par le fait que les saillies ont des parois mutuellement transversales (11, figures 2-3) dont la dimension diminue progressivement vers un bord mince, certaines des parois étant parallèles de façon générale aux bords de lame et certaines des parois étant perpendiculaires de façon générale aux bords de lame afin qu'elles forment des cellules carrées de 0,3 à 1,0 mm de côté, 0,5 à 2,5 mm de hauteur, et ayant un rapport d'allongement de la hauteur à l'épaisseur de la base compris entre 2/1 et 5/1.
  6. Rasoir selon la revendication 5, caractérisé par le fait que les parois (11A, figure 4) sont formées afin qu'elles soient solidaires d'une base (13) ayant des orifices (14) à l'intersection de chaque groupe de quatre parois adjacentes.
  7. Rasoir de sûreté comprenant une ou plusieurs lames (2, 3) et une surface de contact avec la peau, par exemple d'un organe protecteur (7) ou d'un capuchon (8) ayant des saillies qui dépassent, caractérisé par le fait que les saillies comportent plusieurs plots individuels perpendiculaires (14, figure 8) qui sont relativement flexibles ou sont disposés dans une base élastomère qui permet une flexion des plots autour de leurs extrémités inférieures, les plots étant disposés en plusieurs lignes parallèles avec un espace entre les plots de chaque ligne et entre les lignes longitudinales adjacentes, cet espace étant compris entre 0,6 et 1,5 mm.
  8. Rasoir selon l'une quelconque des revendications précédentes caractérisé par le fait que les saillies sont formées d'une matière élastomère de synthèse.
  9. Rasoir selon la revendication 8, caractérisé par le fait que les saillies sont disposées individuellement dans une base de matière élastomère de synthèse qui permet un fléchissement autour de leur extrémité inférieure, les saillies étant formées d'un matériau plus rigide que la base.
EP19890119937 1988-10-28 1989-10-26 Rasoirs mécaniques Expired - Lifetime EP0366139B1 (fr)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=10645939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890119937 Expired - Lifetime EP0366139B1 (fr) 1988-10-28 1989-10-26 Rasoirs mécaniques

Country Status (10)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015131496A1 (fr) * 2014-03-05 2015-09-11 黄志坚 Tête de coupe de rasoir

Families Citing this family (18)

* 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
US6594904B1 (en) 1994-07-01 2003-07-22 The Gillette Company Shaving system
PL178537B1 (pl) * 1994-07-01 2000-05-31 Gillette Co Element stykajacy się ze skórą układu do golenia na mokro, układ do golenia na mokro i sposób formowania elementu stykającego się ze skórą układu do golenia na mokro
US6944952B1 (en) 1994-07-01 2005-09-20 The Gillette Company Shaving system
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
USD407530S (en) 1997-05-12 1999-03-30 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 (8)

* 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
JP5712639B2 (ja) 2011-01-28 2015-05-07 三菱電機株式会社 ダイポールアンテナおよびアレーアンテナ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015131496A1 (fr) * 2014-03-05 2015-09-11 黄志坚 Tête de coupe de rasoir

Also Published As

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

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