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WO1995025617A1 - Systeme de rasoir dynamique a lames opposees, fabrique par moulage par insertion - Google Patents

Systeme de rasoir dynamique a lames opposees, fabrique par moulage par insertion Download PDF

Info

Publication number
WO1995025617A1
WO1995025617A1 PCT/US1995/001274 US9501274W WO9525617A1 WO 1995025617 A1 WO1995025617 A1 WO 1995025617A1 US 9501274 W US9501274 W US 9501274W WO 9525617 A1 WO9525617 A1 WO 9525617A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaving
guard bar
blades
razor unit
unit according
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/US1995/001274
Other languages
English (en)
Inventor
Vincent C. Motta
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 AU17381/95A priority Critical patent/AU1738195A/en
Publication of WO1995025617A1 publication Critical patent/WO1995025617A1/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
    • B26B21/40—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
    • B26B21/08—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
    • 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
    • B26B21/34—Safety razors with one or more blades arranged transversely to the handle of the type carrying 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
    • B26B21/4012—Housing details, e.g. for cartridges

Definitions

  • the present invention relates to a wet shaving razor unit and, more particularly, to an insert molded wet shaving razor unit having a pair of opposing blades and a vertically displaceable guard bar positioned therebetween.
  • wet shaving razor units having opposing blades are known in the art. For example, such arrangements have been employed in razor units designed for the shaving of women's legs. In this regard, these razor units provide an ideal design in that they allow shaving during both the pushing stroke and the pulling stroke.
  • the shave geometry of a razor unit results from the interaction of several components, namely, the guard bar, the blade or blades and the cap. By carefully positioning these components with respect to one another, a desired shave geometry can be obtained. More specifically, this shave geometry varies as the blade exposure varies, as the blade angle varies and as the blade span varies. In the typical razor unit, this "desired** shave geometry is predetermined and the razor unit is then manufactured accordingly. However, what may be considered a "desired" shave geometry for one individual may not be for another individual. In addition, even with respect to a single individual, that "desired" shave geometry changes as the contour of the surface being shaved changes.
  • the present invention which addresses the problems associated with the prior art, provides a wet shaving razor unit for effective shaving of a contoured surface.
  • the razor unit includes first and second blades each having a cutting edge for shaving. The blades are fixed in the razor unit so that the cutting edges of the blades face one another to allow shaving of the contoured surface during passage of each of the cutting edges against the contoured shaving surface.
  • the razor unit also includes a laterally-disposed vertically displaceable guard bar positioned between the blades for providing a proper shave geometry during back and forth shaving strokes against the contoured surface.
  • the guard bar is both supported by and upwardly biased by a resilient spring.
  • the guard bar includes rolling means for facilitating movement of the razor unit along the contoured surface during shaving.
  • the rolling means includes a roller having a length substantially equal to the length of the cutting edges of the blades and disposed substantially parallel to the cutting edges of the blades.
  • the guard bar is supported on each of its ends by laterally-disposed vertical return springs that extend from and are continuous with the sides of the razor unit.
  • the guard bar is one continuous thermoplastic body.
  • the present invention provides a wet- shaving razor unit having a pair of opposing blades and a vertically displaceable guard bar positioned therebetween.
  • the guard bar is free to move in response to forces encountered during shaving, which, in turn, allows the shave geometry of the razor unit to vary in response to the contour of the surface being shaved.
  • Fig. 1 is a perspective view of the shaving system of the present invention
  • Fig. la is a cross-sectional view taken along lines la-la of Fig. 1;
  • Fig. 2 is a cross-sectional view taken along lines 2-2 of Fig. 1;
  • Fig. 3 is a cross-sectional view similar to Fig ⁇ 2 showing an alternative embodiment of the present invention.
  • Fig. 3a is a cross-sectional view similar to Fig. la showing an alternative embodiment of the present invention.
  • Shaving system 10 includes a handle 12 and a shaving head 14.
  • the shaving head is of an opposing blade design, that is, the system includes blades 16, 18 whose cutting edges face one another to allow shaving during both a pushing stroke and a pulling stroke.
  • guard bar 20 Positioned between blades 16, 18 is a guard bar 20.
  • guard bar 20 is connected to the shaving head in such a fashion so as to allow the guard bar to move in a vertical direction in response to forces encountered during shaving.
  • vertical is understood to mean a direction perpendicular to longitudinal axis L of guard bar 20, e.g., generally colinear to handle 12).
  • guard bar 20 may be movably supported by a resilient channel-shaped spring 22.
  • Spring 22 normally maintains the guard bar in the illustrated position, i.e., the guard bar is upwardly biased by the spring.
  • spring 22 deflects to the position shown in phantom in Fig. la, thereby allowing guard bar 20 to be displaced vertically downward. This displacement of guard bar 20 allows the shave geometry of the shaving head to vary in response to the various contoured surfaces encountered during shaving.
  • guard bar 20 includes a roller 24 mounted on a shaft 26.
  • the ends of shafts 26 are supported by spring 22.
  • spring 22 includes a "notched" configuration 28 so that the guard bar can simply be “snapped” into the ends of the spring.
  • Roller 24 is believed to improve the shaving process by facilitating movement of the shaving head along the surface being shaved.
  • blades 16 and 18 are disposed in a housing 30 that is configured to be placed over handle 12, such handle being integrally formed with a body portion 32.
  • Body portion 32 is formed with a rectangular slot for receiving and containing spring 22.
  • Blade housing 30 is removably connectable to body 32 so that the same housing can be removed and discarded once the blades have been dulled.
  • a protective cap 34 can be placed over the blades when the shaving system is not in use.
  • shaving system 10 may include shaving aids 36, 38 incorporated into blade housing 30. In this fashion, the shaving aids are replaced each time the blades are replaced.
  • the shaving aid could be incorporated into the guard bar itself, although in such an embodiment, the shaving aid would have to function for a sustained period of time or, alternatively, the guard bar be capable of having its surface replenished.
  • guard bar 20-' may be movably disposed within the shaving head in the same fashion shown in Fig. la or, alternatively, can be movably supported by means of laterally-disposed vertical return springs 40, as shown in Fig. 3a.
  • guard bar 20' is preferably one continuous, thermoplastic body.
  • the guard bar is preferably continuous with the return springs, which, in turn, are continuous with the sides of body 32.
  • Blade housing 30 is preferably formed through both an insert molding and a sequential molding procedure. More particularly, blades 16 and 18 are supported in a mold into which thermoplastic material is injected. In this fashion, the housing is literally molded around the blades. At the same time, cavities for receipt of shaving aids 36, 38 are formed in the housing. This first stage of the molding process is referred to as insert molding. Sequentially, i.e., following formation of the cavities in the blade housing, a shaving aid (e.g., a polymeric material) is injected in such cavities.
  • a shaving aid e.g., a polymeric material
  • the handle and body portion may be molded separately from the blade housing.
  • a spring and roller assembly is then placed into the rectangular slot formed in the body portion and a blade housing is then "snapped" over the body portion.
  • the handle, body portion, return springs and guard bar are integrally molded in one step. Following formation of this unit, the blade housing may again be "snapped" over the body portion.

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 un rasoir destiné au rasage humide, qui est fabriqué par moulage par insertion. Il comporte une paire de lames opposées (16, 18) et une barre de protection (20) située entre les lames, pouvant se déplacer verticalement. La barre de protection (20) se déplace verticalement, en réaction aux forces rencontrées durant le rasage. Ceci provoque une modification de la géométrie du rasoir en fonction du contour de la surface rasée.
PCT/US1995/001274 1994-03-23 1995-01-30 Systeme de rasoir dynamique a lames opposees, fabrique par moulage par insertion Ceased WO1995025617A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU17381/95A AU1738195A (en) 1994-03-23 1995-01-30 Insert molded dynamic opposing blade shaving system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21734394A 1994-03-23 1994-03-23
US08/217,343 1994-03-23

Publications (1)

Publication Number Publication Date
WO1995025617A1 true WO1995025617A1 (fr) 1995-09-28

Family

ID=22810670

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/001274 Ceased WO1995025617A1 (fr) 1994-03-23 1995-01-30 Systeme de rasoir dynamique a lames opposees, fabrique par moulage par insertion

Country Status (4)

Country Link
AU (1) AU1738195A (fr)
IL (1) IL112697A0 (fr)
WO (1) WO1995025617A1 (fr)
ZA (1) ZA952280B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010009180A1 (fr) * 2008-07-16 2010-01-21 The Gillette Company Géométrie pour dispositif d'aide au rasage pour système de rasage humide
US8413334B2 (en) 2010-08-03 2013-04-09 The Gillette Company Shaving cartridge guard for supporting skin
US8448339B2 (en) 2010-08-03 2013-05-28 The Gillette Company Shaving cartridge with supressed blade geometry
US20220379508A1 (en) * 2021-02-25 2022-12-01 Erin K. Seferi Anti-clogging razor
US20230373116A1 (en) * 2022-05-23 2023-11-23 Dorco Co., Ltd. Razor cartridge
DE102023118733A1 (de) 2022-08-08 2024-02-08 Erin K. Seferi Anti-zusetzungs-rasierer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871073A (en) * 1972-11-17 1975-03-18 Gillette Co Shaving system with a fixed edge between the blade edge and the guard
US4168571A (en) * 1977-02-02 1979-09-25 The Gillette Company Shaving unit
CH620393A5 (en) * 1977-11-01 1980-11-28 Alexandre Joseph De Fliedner Safety razor
US4378633A (en) * 1979-12-07 1983-04-05 The Gillette Company Razor blade assembly
US5084968A (en) * 1990-09-10 1992-02-04 The Gillette Company Razor blade assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871073A (en) * 1972-11-17 1975-03-18 Gillette Co Shaving system with a fixed edge between the blade edge and the guard
US4168571A (en) * 1977-02-02 1979-09-25 The Gillette Company Shaving unit
CH620393A5 (en) * 1977-11-01 1980-11-28 Alexandre Joseph De Fliedner Safety razor
US4378633A (en) * 1979-12-07 1983-04-05 The Gillette Company Razor blade assembly
US5084968A (en) * 1990-09-10 1992-02-04 The Gillette Company Razor blade assembly

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010009180A1 (fr) * 2008-07-16 2010-01-21 The Gillette Company Géométrie pour dispositif d'aide au rasage pour système de rasage humide
US8413334B2 (en) 2010-08-03 2013-04-09 The Gillette Company Shaving cartridge guard for supporting skin
US8448339B2 (en) 2010-08-03 2013-05-28 The Gillette Company Shaving cartridge with supressed blade geometry
US20220379508A1 (en) * 2021-02-25 2022-12-01 Erin K. Seferi Anti-clogging razor
US11607819B2 (en) * 2021-02-25 2023-03-21 Erin K. Seferi Anti-clogging razor
US20230373116A1 (en) * 2022-05-23 2023-11-23 Dorco Co., Ltd. Razor cartridge
DE102023118733A1 (de) 2022-08-08 2024-02-08 Erin K. Seferi Anti-zusetzungs-rasierer
DE102023118733B4 (de) 2022-08-08 2024-06-13 Erin K. Seferi Anti-zusetzungs-rasierer

Also Published As

Publication number Publication date
AU1738195A (en) 1995-10-09
ZA952280B (en) 1995-12-14
IL112697A0 (en) 1995-05-26

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