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WO1996032232A1 - Systeme de rasage dynamique multidirectionnel - Google Patents

Systeme de rasage dynamique multidirectionnel Download PDF

Info

Publication number
WO1996032232A1
WO1996032232A1 PCT/US1996/002296 US9602296W WO9632232A1 WO 1996032232 A1 WO1996032232 A1 WO 1996032232A1 US 9602296 W US9602296 W US 9602296W WO 9632232 A1 WO9632232 A1 WO 9632232A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
shaving system
guard bar
shaving
movable
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.)
Ceased
Application number
PCT/US1996/002296
Other languages
English (en)
Inventor
Robert V. Lozeau
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.)
Warner Lambert Co LLC
Original Assignee
Warner Lambert 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 Warner Lambert Co LLC filed Critical Warner Lambert Co LLC
Priority to AU49893/96A priority Critical patent/AU4989396A/en
Publication of WO1996032232A1 publication Critical patent/WO1996032232A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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 shaving system and, more particularly, to a multi-directional, dynamic shaving system designed to provide a close, comfortable shave when drawn across skin in one of a plurality of different directions.
  • a razor head which will cut hair when moved across the skin surface being shaved in either of at least two directions.
  • shaving difficult to reach areas can be facilitated by providing the person shaving with the option of moving the shaving system in either of at least two directions across those areas.
  • Several shaving systems have been suggested which provide opposing blade edges, i.e., two rigid blades which are positioned such that the shaving edges face each other.
  • the blades are held fixed in a housing. Therefore, the leading blade is not disposed in a cutting attitude to the hair on the skin surface and will tend to scrape the skin before the cutting blade reaches the hair to be cut.
  • the various embodiments of the present invention comprise shaving systems having opposing, movable blades.
  • a razor head is provided with two independently movable blades facing in a first direction with two opposing, independently movable blades facing in a second, opposite direction.
  • a preferred aspect of this embodiment includes an independently movable guard bar positioned between the central, opposing blades and a pivoting support for pivotally supporting the razor head for pivotal movement about an axis substantially parallel to the blade edges and positioned proximate the central, common guard bar.
  • a preferred illustrated embodiment of the present invention comprises a razor head with four independently movable blades which share a common, independently movable guard bar mounted upon a pivotal support
  • the advantages of the present invention may be realized with a different number of blades and/or guard bars, as well as different configurations.
  • Figure 1 is a perspective view of one embodiment of the present invention.
  • Figure 2 is a partial cross-sectional view of Figure 1 taken along lines 2-2.
  • Figure 3 is a side view of the embodiment illustrated in Figure 1.
  • Figure 4 is a front view of the embodiment shown in Figure 1.
  • Figure 5 is a bottom, plan view of the razor head shown in Figure 1.
  • the various embodiments of the present invention comprise shaving systems having at least two movable blades disposed with the cutting surfaces of the blades facing different directions, most preferably facing each other.
  • One preferred embodiment of the present invention comprises two sets of independently movable blades disposed in opposing relation and an independently movable guard bar disposed between the opposing blades.
  • This embodiment is in the form of a razor head which is pivotally mounted to a razor so that the skin-engaging members pivot about an axis which is parallel to a plane defined by the cutting edges of the blades.
  • a most preferred embodiment comprises a pivotal connection wherein the blades pivot about an axis which is common to the skin-engaging surface of a centrally located guard bar.
  • the illustrated embodiment is in the form of a razor head, the present invention includes other forms of shaving systems which may benefit from the advantages.
  • the term "razor head” is meant to include cartridges which are designed and manufactured for attachment to a separate razor, as well as the operative portion of a disposable razor wherein the skin- engaging portions are integrally formed with a handle section.
  • the illustrated embodiment comprises a razor head having a leading shaving aid 10, an outer, rearwardly facing blade 30, central rearwardly facing blade 50, a movable guard bar 70, a movable, forwardly facing central blade 90, an outer, forwardly facing blade 110 and a trailing shaving aid 130.
  • all four blades and the central guard bar are supported by resilient spring fingers for independent movement in response to forces encountered during shaving.
  • the movable elements are disposed within a housing 150 which is pivotally connected to a razor 200. While many forms of razors can be employed, the preferred, illustrated razor head is provided with a central recess 210 on both sides thereof in order to facilitate gripping of the razor between the user's thumb and index/middle fingers.
  • outer, rearwardly facing blade 30 is attached to a blade support 32 which is resiliently supported for vertical movement by a resilient spring member 34.
  • the upper movement of resilient spring members 34 can be restricted by end walls 36 formed in the interior side walls of the razor head.
  • the illustrated type of resilient spring finger 34 is known to those skilled in the art and is, therefore, not illustrated in detail therein.
  • the other blades are resiliently supported in this illustrated embodiment.
  • the particular structure used for providing movement to one or more of the blades and/or guard bars can be selected from any of several types which have been previously disclosed or are heretofore conceived without departing from the scope of the present invention.
  • blade support 32 it is also within the scope of the present invention to provide a movable blade without the need for a separately formed blade support.
  • the other three blades are similarly provided with blade supports and resilient spring fingers.
  • the movement of the blades and guard bar during shaving will result in changes to the shaving geometry of this razor head.
  • the blade exposure and spans between the cutting edges of a blade and the face-engaging element disposed forwardly of that blade will change as the elements move.
  • the upward movement of the blades and guard bar is limited by a band 170 which wraps around the side ends of the razor head.
  • the band may be formed of any suitable material, such as plastic or a malleable metal.
  • the housing 150 comprises a lower cam surface 180 which angles downwardly from a central apex.
  • a biasing member 220 of razor 200 pushes upwardly against cam surface 1B0 in response to upward forces provided by preloaded spring 225 thereby normally urging housing 150 into a neutral position as shown in Figure 2.
  • Biasing member 220 is sufficiently resilient to permit housing 150 to pivot in response to forces encountered during shaving, thereby optimizing the contact between the blades and the surface being shaved.
  • a pair of movable securing members 230 of razor 200 engage retainers 190 located on the bottom of housing 150.
  • the securing members 230 of the illustrated embodiment are inwardly oveable in response to actuation of an actuator 250 in order to allow attachment and detachment of a razor head to razor 200.
  • the engaging surfaces of securing member 230 and retainers 190 are advantageously curved in order to facilitate the smooth, pivotal movement of the razor head during shaving.
  • a preferred embodiment provides for pivotal movement of housing 150 about an axis which is preferably proximate to, and most preferably on, the skin-engaging surface of central guard bar 70.
  • This axis is also preferably proximate to, and most preferably coincident with, a plane passing through the blade edges. The positioning of the pivotal axis in this location advantageously maintains optimum contact between the skin- engaging members and the skin surface.
  • At least one of the cutting edges is provided with a fencing element which passes over one or more of the cutting edges.
  • a fencing element may be formed as a continuous filament which is spirally wound around one or more of the blades. It is also within the scope of the present invention to use a plurality of discrete fencing elements and/or fencing elements which are deposited in recessed guard seats such as those disclosed in U.S. Patent No. 4,211,006 to Halaby et al, and assigned to the same assignee as the present invention, which is hereby incorporated by reference.
  • one or more fencing elements can be formed as a stamped sheet, e.g. by stamping holes in a metallic foil.
  • fencing elements typically comprise metal
  • other forms of fencing elements may also be employed without departing from the scope of the present invention.
  • techniques have been disclosed in U.S. Patent Application No. 645,055 filed December 29, 1975 by Beddall entitled Printed Blade Shield, and in U.S. Patent No. 4,252,837 to Auton entitled Blade Shields, all being assigned to the assignee of the present invention, and hereby incorporated by reference, which disclose methods for placing fencing elements on a blade edge.
  • epoxy resins may be placed on the edge and flanking facets of a blade using ink jet printing techniques or, alternatively, the fencing elements may be deposited by sputtering or ion plating.
  • the materials used for forming the various elements of the razor head may include a wide variety of materials.
  • thermoplastics which are particularly suited for injection molding and which have excellent durability and shelf life in the environments typically encountered during shaving, shipping and storing.
  • Another preferred aspect of the present invention comprises the incorporation of a shaving aid on one or more of the skin-engaging surfaces of the shaving system.
  • the illustrated embodiment advantageously comprises shaving aid 10 on the leading sidewall of housing 150 as well as shaving aid 130 disposed on the trailing side of sidewall 150.
  • the skin surface being shaved is provided with the advantageous effects of the shaving aid both prior to contact with the sharpened blade edges and after the blade edges have passed over the shaved surface.
  • a shaving aid may comprise one or various combinations of the following:
  • a lubricating agent for reducing the frictional forces between the razor and the skin e.g., a micro-encapsulated silicone oil.
  • An agent which reduces the drag between the razor parts and the shaver's face e.g., a polyethylene oxide in the range of molecular weights between 100,000 and 6,000,000; a non- ionic polyacrylamide; and/or a natural polysaccaride derived from plant materials such as "guar gum”.
  • An agent which modifies the chemical structure of the hair to allow the razor blade to pass through the whiskers very easily e.g., a depilatory agent is one example.
  • D. A cleaning agent which allows the whisker and skin debris to be washed more easily from the razor parts during shaving, e.g., a silicon polyethylene oxide block copolymer and detergent such as sodium lauryl sulphate.
  • E. A medicinal agent for killing bacteria, or repairing skin damage and abrasions.
  • F A cosmetic agent for softening, smoothing, conditioning or improving the skin.
  • the shaving aid may comprise one or more of the shaving aids disclosed in U.S. Patent No. 5,056,221 to Thoene, U.S. Patent No. 4,044,120 to Rowsell et al., U.S. Patent No. 5,095,619 to Davis et al., or Japanese Patent Application No. Hei 7 [1995] - 24156 to Miyazaki, et al. which are also hereby incorporated by reference.
  • the illustrated embodiment comprises a single, movable, centrally located guard bar 70 having a generally rounded upper portion
  • the present invention can comprise a plurality of guard bars or guard surfaces between the central, opposing blades or between blades which face the same direction.
  • the skin- engaging portion of the guard bar may be provided with one or more shaving aids, such as those described herein.
  • a central guard bar which is either movable or stationary, with a skin-engaging resilient material, for example, a synthetic rubber-like compound which is resilient and has a higher coefficient of friction with skin surfaces than conventional, rigid polymers such as polypropylene.

Landscapes

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

Abstract

Système de rasage se composant d'au moins une lame mobile (30, 50) dirigée dans un sens et au minimum une autre lame (90, 100) dirigée dans l'autre sens. Le mode de réalisation préférentiel prévoit une barre de protection (70) mobile et indépendante, placée entre deux lames mobiles se faisant face, et un support pivotant (220) supportant la tête du rasoir dans des conditions permettant à cette dernière de pivoter selon un axe essentiellement parallèle aux bords des lames, placé à proximité de la barre de protection centrale commune. L'un des modes de réalisation préférentiels prévoit quatre lames mobiles indépendantes (30, 50, 70, 100) partageant une barre de protection commune (70) à débattement indépendant, montées sur un support pivotant (220).
PCT/US1996/002296 1995-04-10 1996-02-20 Systeme de rasage dynamique multidirectionnel Ceased WO1996032232A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU49893/96A AU4989396A (en) 1995-04-10 1996-02-20 Multi-directional dynamic shaving system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41962795A 1995-04-10 1995-04-10
US08/419,627 1995-04-10

Publications (1)

Publication Number Publication Date
WO1996032232A1 true WO1996032232A1 (fr) 1996-10-17

Family

ID=23663047

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/002296 Ceased WO1996032232A1 (fr) 1995-04-10 1996-02-20 Systeme de rasage dynamique multidirectionnel

Country Status (4)

Country Link
AU (1) AU4989396A (fr)
IL (1) IL117034A0 (fr)
WO (1) WO1996032232A1 (fr)
ZA (1) ZA962820B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004073942A1 (fr) * 2003-02-19 2004-09-02 Eveready Battery Company, Inc. Cartouche pour rasage au rasoir mecanique comportant un auxiliaire facilitant le rasage
WO2005075162A1 (fr) * 2004-01-30 2005-08-18 Eveready Battery Company, Inc. Instrument de rasage bidirectionnel
WO2007015220A1 (fr) * 2005-08-03 2007-02-08 The Gillette Company Rasoirs
US20210276211A1 (en) * 2020-03-05 2021-09-09 John Robert Harris Razor blade with improved asymmetric profile
EP4000823A1 (fr) 2020-11-17 2022-05-25 BIC Violex Single Member S.A. Tête de rasage à double sens
EP4067024A1 (fr) * 2021-03-31 2022-10-05 BIC Violex Single Member S.A. Cartouche de rasoir
USD1107313S1 (en) 2024-04-23 2025-12-23 The Gillette Company Llc Shaving razor cartridge

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2129698A5 (fr) * 1971-03-15 1972-10-27 Gillette Co
FR2379357A1 (fr) * 1977-02-02 1978-09-01 Gillette Co Rasoir de surete
CH620393A5 (en) * 1977-11-01 1980-11-28 Alexandre Joseph De Fliedner Safety razor
US4501066A (en) * 1983-04-11 1985-02-26 Sceberras Conrad T Dual headed razor system
US5084968A (en) * 1990-09-10 1992-02-04 The Gillette Company Razor blade assembly
US5095619A (en) * 1990-09-28 1992-03-17 The Gillette Company Shaving system
US5343622A (en) * 1993-02-22 1994-09-06 Andrews Edward A Bi-directional razor device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2129698A5 (fr) * 1971-03-15 1972-10-27 Gillette Co
FR2379357A1 (fr) * 1977-02-02 1978-09-01 Gillette Co Rasoir de surete
CH620393A5 (en) * 1977-11-01 1980-11-28 Alexandre Joseph De Fliedner Safety razor
US4501066A (en) * 1983-04-11 1985-02-26 Sceberras Conrad T Dual headed razor system
US5084968A (en) * 1990-09-10 1992-02-04 The Gillette Company Razor blade assembly
US5095619A (en) * 1990-09-28 1992-03-17 The Gillette Company Shaving system
US5343622A (en) * 1993-02-22 1994-09-06 Andrews Edward A Bi-directional razor device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7086160B2 (en) 2002-10-21 2006-08-08 Eveready Battery Company, Inc. Bidirectional shaving implement
WO2004073942A1 (fr) * 2003-02-19 2004-09-02 Eveready Battery Company, Inc. Cartouche pour rasage au rasoir mecanique comportant un auxiliaire facilitant le rasage
WO2005075162A1 (fr) * 2004-01-30 2005-08-18 Eveready Battery Company, Inc. Instrument de rasage bidirectionnel
WO2007015220A1 (fr) * 2005-08-03 2007-02-08 The Gillette Company Rasoirs
US20210276211A1 (en) * 2020-03-05 2021-09-09 John Robert Harris Razor blade with improved asymmetric profile
EP4114627A4 (fr) * 2020-03-05 2023-12-06 John Robert Harris Lame de rasoir à profil asymétrique amélioré
EP4000823A1 (fr) 2020-11-17 2022-05-25 BIC Violex Single Member S.A. Tête de rasage à double sens
EP4067024A1 (fr) * 2021-03-31 2022-10-05 BIC Violex Single Member S.A. Cartouche de rasoir
USD1107313S1 (en) 2024-04-23 2025-12-23 The Gillette Company Llc Shaving razor cartridge

Also Published As

Publication number Publication date
ZA962820B (en) 1996-10-14
IL117034A0 (en) 1996-06-18
AU4989396A (en) 1996-10-30

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