WO1991014547A1 - Safety razor - Google Patents
Safety razor Download PDFInfo
- Publication number
- WO1991014547A1 WO1991014547A1 PCT/US1991/001908 US9101908W WO9114547A1 WO 1991014547 A1 WO1991014547 A1 WO 1991014547A1 US 9101908 W US9101908 W US 9101908W WO 9114547 A1 WO9114547 A1 WO 9114547A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- razor
- path
- apertures
- aperture
- displacement
- Prior art date
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
- B26B21/40—Details or accessories
- B26B21/52—Handles, e.g. tiltable, flexible
- B26B21/526—Electric features
-
- 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
- B26B19/384—Dry-shaver foils; Manufacture thereof
-
- 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
- B26B21/38—Safety razors with one or more blades arranged transversely to the handle with provision for reciprocating the blade by means other than rollers
-
- 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
- B26B21/4081—Shaving methods; Usage or wear indication; Testing methods
-
- 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
- B26B21/52—Handles, e.g. tiltable, flexible
Definitions
- SAFETY RAZOR This invention relates to safety razors, and more particularly to a razor that employs foil structure in which an array of apertures are formed, a peripheral 5 portion of each aperture being sharpened to provide a cutting edge.
- a hand-held razor of the wet-shave type that includes a handle, a head portion, foil structure with a
- each aperture having opposed sharpened shaving edge portions, and a displacing mechanism coupled to the head portion for cyclically displacing the foil along a predetermined path relative to the handle portion; the velocity of the
- the head portion has a through aperture and support surface structure bounding the through aperture, the foil structure is a thin flexible
- the foil has at least twenty apertures, the distance between the opposed edge portions (e.g., diameter, etc.) of each aperture is less than about four millimeters, the displacement mechanism includes an electric motor, the frequency of the displacement motion along the path is between one hundred and three hundred hertz, the displacement cycle amplitude is at least about 0.1 millimeter, and the displacement cycle amplitude is up to about one quarter the distance between the opposed edge portions.
- the displacement mechanism may be of any suitable type, for example, of a direct-drive type or of an uncoupled offset weight type.
- the apertures are of circular configuration and of substantially the same diameter and less than about two millimeters in diameter; and the predetermined path is of circular configuration and of diameter about one quarter of the diameters of the apertures.
- the apertures are of slot configuration and have parallel opposed sharpened shaving edge positions that are spaced less than four millimeters apart, the predetermined path is along a straight line perpendicular to the parallel shaving edge portions (although in other embodiments it may be at an angle to the shaving edge portions) , and the displacement mechanism reciprocates the foil along the straight line with an amplitude of travel of the foil of about one fourth the space between the opposed edge portions.
- FIG. 1 is a perspective view of a razor in accordance with the invention
- Figs. 2A - 2C illustrate the motion of the foil for the razor of Fig. 1;
- Fig. 3 is a diagrammatic view of a portion of the foil and illustrates the motion of each aperture in the foil of the razor of Fig. 1;
- Fig. 4 is a perspective view of another razor embodiment of the invention.
- Fig. 5 is a diagrammatic view of a portion of the foil and illustrates the motion of each aperture in the foil of the razor of Fig. 4. egcri tjon ___ particular aafrpfliroen s
- the razor 8 shown in Fig. 1 includes molded body 10 and head portion 12 with top surface 14. Supported on surface 14 and positioned under aperture 15 therein is a metal foil multi-apertured blade strip 20 that has apertures 22 with edges 24 that are sharpened to provide shaving edges.
- foil strip 20 is manufactured from steel, has a length of about 4.2 centimeters, a width of about 2.2 centimeters and a thickness of about 0.1 millimeter.
- the circular apertures 22 are about one millimeter in diameter and are spaced about two millimeters on center and are disposed in rows that are spaced about one millimeter on center.
- Body 10 and cap portion 12 are formed of polypropylene.
- the cap portion 12 has a convex upper surface 14 (of about 12.5 centimeters radius).
- the foil is secured in recessed relation below upper skin- engaging surface 14.
- Razor 8 includes within body portion 10 a displacement assembly 30 that includes an electric motor 32 with shaft 34 and eccentric extension 36. Extension 36 is connected in drive relationship with support plate 38 that is rigidly connected to head portion 12. Motor 32 rotates shaft 34 and extension 36 in the direction of the arrow 42, in turn displacing head portion 12 and foil 20 in a circular path indicated schematically by arrows 44 in Figs. 1 - 3.
- the motor may be a battery powered electric motor and handle 10 has a recharging port 46.
- the user grasps the handle portion 10 of the razor, turns on motor 32, and places the foil 20 against the skin region to be shaved.
- Motor 32 moves the foil in oscillatory motion with a velocity that is substantially greater than the speed imposed by normal shaving stroke hand movement so that as the razor is normally passed over the skin, there is provided a cutting action that is substantially independent of the motion caused by the hand movement. Beard or other hairs are cut from more than one direction as the foil oscillates.
- foil 20 is displaced along predetermined circular or orbital path 44. From a starting position in Fig. 2, the foil is displaced along path 44 to position 48 (Fig. 2B) and to position 50 (Fig. 2C) before returning to the starting position (Fig. 2A) . All the apertures 22 are simultaneously displaced in a circular path 44. Illustrated in dotted line in Fig. 3 is the simultaneous motion of opposed points A, B, C and D of the sharpened edge 24 of a single aperture 22. The circular motion 44 of the circular apertures 22 maximizes the use of the sharpened edges and enhances the shaving effect in a shaving stroke.
- the diameter of circular path 44 is about 0.25 millimeter, a diameter less than the diameter of the aperture but greater than the thickness of a beard hair, (typically, about 0.1 millimeter).
- the frequency of the circular motion is around 200 Hz.
- razor 8' has foil 60 with slot shaped rectangular apertures 62.
- the opposed parallel longitudinal edges 64 are sharpened to provide shaving edges (Fig. 5) .
- the razor includes motor 66 with coupling shaft 70 that translates head portion 12', causing the foil 60 to move in a straight line path in the direction of arrow 68, i.e., foil 60 is reciprocated in a direction perpendicular to the cutting edges 64 of apertures 62.
- Each slot aperture 62 has a length of about two millimeters and is about 0.75 millimeter wide.
- the oscillation amplitude of foil 60 is about 0.2 millimeter, and the reciprocation frequency is about two hundred Hertz.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP91907045A EP0521086B1 (en) | 1990-03-22 | 1991-03-21 | Safety razor |
DE69119412T DE69119412T2 (en) | 1990-03-22 | 1991-03-21 | SAFETY SHAVERS |
BR919106264A BR9106264A (en) | 1990-03-22 | 1991-03-21 | SAFETY SHAVING EQUIPMENT |
JP03506640A JP3073522B2 (en) | 1990-03-22 | 1991-03-21 | Safety razor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/497,239 US5031318A (en) | 1990-03-22 | 1990-03-22 | Safety razor |
US497,239 | 1990-03-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991014547A1 true WO1991014547A1 (en) | 1991-10-03 |
Family
ID=23976024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1991/001908 WO1991014547A1 (en) | 1990-03-22 | 1991-03-21 | Safety razor |
Country Status (16)
Country | Link |
---|---|
US (1) | US5031318A (en) |
EP (1) | EP0521086B1 (en) |
JP (1) | JP3073522B2 (en) |
CN (1) | CN1026962C (en) |
AT (1) | ATE137699T1 (en) |
AU (1) | AU7585791A (en) |
BR (1) | BR9106264A (en) |
CA (1) | CA2077442C (en) |
CS (1) | CS78091A3 (en) |
DE (1) | DE69119412T2 (en) |
ES (1) | ES2086537T3 (en) |
HU (1) | HU209084B (en) |
MA (1) | MA22085A1 (en) |
WO (1) | WO1991014547A1 (en) |
YU (1) | YU50391A (en) |
ZA (1) | ZA911952B (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5377699A (en) * | 1993-04-02 | 1995-01-03 | Varnum; Shirley | Hair abrader |
US5604983A (en) * | 1994-04-14 | 1997-02-25 | The Gillette Company | Razor system |
USD403811S (en) * | 1997-04-15 | 1999-01-05 | The Gillette Company | Frame of a shaving unit |
US6996908B2 (en) * | 2000-02-16 | 2006-02-14 | Eveready Battery Company, Inc. | Wet shaving assembly |
US7370419B2 (en) * | 2000-02-16 | 2008-05-13 | Eveready Battery Company, Inc. | Replacement cartridge for a razor assembly |
US6584690B2 (en) | 2000-02-16 | 2003-07-01 | Warner-Lambert Company | Wet shaving assembly |
US7086159B2 (en) | 2000-02-16 | 2006-08-08 | Eveready Battery Company, Inc. | Razor assembly |
US8061040B2 (en) * | 2002-02-01 | 2011-11-22 | Patrick Joseph Walls | Cutter blade assembly and dry shaver for variable height of cut |
US20050278954A1 (en) * | 2002-04-24 | 2005-12-22 | Eveready Battery Company, Inc. | Shaving aid body for a safety razor |
US7266895B2 (en) | 2002-04-24 | 2007-09-11 | Eveready Battery Company, Inc. | Razor assembly |
US6948249B2 (en) * | 2002-07-17 | 2005-09-27 | Eveready Battery Company, Inc. | Razor cartridge with a shaving aid and a method of manufacturing a razor cartridge |
US7162800B2 (en) * | 2003-05-12 | 2007-01-16 | Eveready Battery Company, Inc. | Wet shaving assembly |
US7103976B2 (en) * | 2004-02-06 | 2006-09-12 | Eveready Battery Company, Inc. | Razor assembly |
GB0417231D0 (en) * | 2004-08-03 | 2004-09-01 | Feonic Plc | A razor |
US20060272460A1 (en) * | 2005-06-02 | 2006-12-07 | Cheng-Jih Li | Shaving razors |
DE102006052622A1 (en) * | 2006-11-08 | 2008-05-15 | Braun Gmbh | Shaving foil for an electric shaver |
FR2910834A1 (en) * | 2007-01-02 | 2008-07-04 | Philippe Richard | Complete shaving kit e.g. non-electric razor, for use in place outside home, has modules that are associatable and easily transportable, where module acts as shaving head that is equipped with blades whose sharp edges are convergent |
US20080256800A1 (en) * | 2007-04-20 | 2008-10-23 | Roy Nicoll | Razor cartridge assembly with movable face |
US8398945B2 (en) | 2008-12-12 | 2013-03-19 | Thyssenkrupp Uhde Gmbh | Removal of ammonia nitrogen, ammonium nitrogen and urea nitrogen by oxidation with hypochlorite-containing solutions from exhaust air in plants for producing ammonia and urea |
EP3300848B1 (en) * | 2016-09-28 | 2019-10-23 | Braun GmbH | Electric shaver |
GB2580088C (en) * | 2018-12-21 | 2021-05-26 | Brengor Innovation Ltd | Razor |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3509626A (en) * | 1968-03-11 | 1970-05-05 | Eversharp Inc | Electromechanical razor operable at high frequencies |
US3793723A (en) * | 1971-12-03 | 1974-02-26 | Ultrasonic Systems | Ultrasonic replaceable shaving head and razor |
US4180906A (en) * | 1977-10-31 | 1980-01-01 | May Russell P | Razor with orbiting discs with sharp-edge slots, and method for making discs |
US4301593A (en) * | 1979-12-28 | 1981-11-24 | May Russell P | Anti-spin coupling for orbiting disc razor |
US4744144A (en) * | 1986-04-02 | 1988-05-17 | Wellington Investments, Inc. | Oscillating razor |
US4807360A (en) * | 1987-09-02 | 1989-02-28 | The Gillette Company | Shaving device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2054418A (en) * | 1933-05-04 | 1936-09-15 | Kupfer Asbest Co | Safety razor |
-
1990
- 1990-03-22 US US07/497,239 patent/US5031318A/en not_active Expired - Lifetime
-
1991
- 1991-03-15 ZA ZA911952A patent/ZA911952B/en unknown
- 1991-03-19 MA MA22361A patent/MA22085A1/en unknown
- 1991-03-21 ES ES91907045T patent/ES2086537T3/en not_active Expired - Lifetime
- 1991-03-21 HU HU91955A patent/HU209084B/en not_active IP Right Cessation
- 1991-03-21 JP JP03506640A patent/JP3073522B2/en not_active Expired - Lifetime
- 1991-03-21 WO PCT/US1991/001908 patent/WO1991014547A1/en active IP Right Grant
- 1991-03-21 DE DE69119412T patent/DE69119412T2/en not_active Expired - Fee Related
- 1991-03-21 CA CA002077442A patent/CA2077442C/en not_active Expired - Lifetime
- 1991-03-21 AU AU75857/91A patent/AU7585791A/en not_active Abandoned
- 1991-03-21 AT AT91907045T patent/ATE137699T1/en active
- 1991-03-21 YU YU50391A patent/YU50391A/en unknown
- 1991-03-21 BR BR919106264A patent/BR9106264A/en unknown
- 1991-03-21 EP EP91907045A patent/EP0521086B1/en not_active Expired - Lifetime
- 1991-03-21 CN CN91101756A patent/CN1026962C/en not_active Expired - Fee Related
- 1991-03-22 CS CS91780A patent/CS78091A3/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3509626A (en) * | 1968-03-11 | 1970-05-05 | Eversharp Inc | Electromechanical razor operable at high frequencies |
US3793723A (en) * | 1971-12-03 | 1974-02-26 | Ultrasonic Systems | Ultrasonic replaceable shaving head and razor |
US4180906A (en) * | 1977-10-31 | 1980-01-01 | May Russell P | Razor with orbiting discs with sharp-edge slots, and method for making discs |
US4301593A (en) * | 1979-12-28 | 1981-11-24 | May Russell P | Anti-spin coupling for orbiting disc razor |
US4744144A (en) * | 1986-04-02 | 1988-05-17 | Wellington Investments, Inc. | Oscillating razor |
US4807360A (en) * | 1987-09-02 | 1989-02-28 | The Gillette Company | Shaving device |
Also Published As
Publication number | Publication date |
---|---|
YU50391A (en) | 1994-06-10 |
EP0521086A4 (en) | 1993-01-27 |
MA22085A1 (en) | 1991-10-01 |
CA2077442C (en) | 1998-12-08 |
ZA911952B (en) | 1991-12-24 |
CN1054930A (en) | 1991-10-02 |
HUT63086A (en) | 1993-07-28 |
EP0521086B1 (en) | 1996-05-08 |
HU209084B (en) | 1994-03-28 |
CA2077442A1 (en) | 1991-09-23 |
ES2086537T3 (en) | 1996-07-01 |
BR9106264A (en) | 1993-04-06 |
EP0521086A1 (en) | 1993-01-07 |
DE69119412T2 (en) | 1996-12-05 |
JPH05505743A (en) | 1993-08-26 |
ATE137699T1 (en) | 1996-05-15 |
CN1026962C (en) | 1994-12-14 |
HU910955D0 (en) | 1991-10-28 |
DE69119412D1 (en) | 1996-06-13 |
US5031318A (en) | 1991-07-16 |
AU7585791A (en) | 1991-10-21 |
CS78091A3 (en) | 1992-01-15 |
JP3073522B2 (en) | 2000-08-07 |
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