EP0045879B1 - Rasierklingeneinheit - Google Patents

Rasierklingeneinheit Download PDF

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Publication number
EP0045879B1
EP0045879B1 EP19810105758 EP81105758A EP0045879B1 EP 0045879 B1 EP0045879 B1 EP 0045879B1 EP 19810105758 EP19810105758 EP 19810105758 EP 81105758 A EP81105758 A EP 81105758A EP 0045879 B1 EP0045879 B1 EP 0045879B1
Authority
EP
European Patent Office
Prior art keywords
blade
base
arms
cutting edge
strand
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
Application number
EP19810105758
Other languages
English (en)
French (fr)
Other versions
EP0045879A1 (de
Inventor
Robert Anthony Trotta
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
Priority claimed from US06/176,138 external-priority patent/US4324041A/en
Priority claimed from US06/229,623 external-priority patent/US4337575A/en
Priority claimed from US06/253,071 external-priority patent/US4403412A/en
Application filed by Gillette Co LLC filed Critical Gillette Co LLC
Publication of EP0045879A1 publication Critical patent/EP0045879A1/de
Application granted granted Critical
Publication of EP0045879B1 publication Critical patent/EP0045879B1/de
Expired 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
    • B26B21/54—Razor-blades
    • 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
    • B26B21/222—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit
    • B26B21/227—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit with blades being resiliently mounted in the changeable unit

Definitions

  • the invention relates to wet shaving implements and is directed more particularly to a blade assembly in which blade means are permanently secured in a housing having cap and guard portions.
  • U.S. Patent 2,327,967 is typical of non- adjustable double edge razors. It discloses a fixed platform structure attached or attachable to a handle. The platform serves as a rigid base on which a double edge or two-sided razor blade member can be clamped. When such a blade member is so clamped in position there is no independent movement of the blade member with respect to the clamping structure.
  • U.K. Patent 1,566,505 relates to an entirely different structure but incorporates independently movable guard and blade portions.
  • a razor blade assembly incorporating a platform, said platform having a longitudinal rear edge defining a base, a longitudinal front edge extending substantially parallel thereto and ends interconnecting said base and front edge, a cap, at least one blade contained between said platform and cap, and a guard associated with said platform front edge, characterized in that blade supporting resilient arms extend from the base toward the guard.
  • a first blade comprises a first cutting edge strand and a first base strand substantially parallel to and spaced from said first cutting edge strand, said first cutting edge and first base strands being connected to each other by interconnecting strands, said first blade being supported by a set of arms extending from said base and being adapted to flex about the junctures thereof with said base to facilitate arcuate movement of said first cutting edge strand about said base, and a second blade comprises a second cutting edge strand and a second base strand parallel to and spaced from said second cutting edge strand, said second cutting edge and second base strands being connected to each other by interconnecting strands, said second blade being supported by a further set of arms extending from said base to support said second blade and being adapted to flex about the junctures thereof with said base to facilitate arcuate movement of said second cutting edge strand about said base.
  • the illustrative razor blade assembly includes a platform member 1 having a base portion 2.
  • the platform member 1 is joined to a cap portion 4.
  • First arm means 6 extend from the base portion 2 and are joined to a guard portion 8 extending generally parallel to the base portion.
  • the first arm means 6 include a first set of arms 9, including a first arm 10 proximate a first end 12 of the platform member 1 and a second arm 14 proximate a second end 16 of the platform member, the first arm 10 joining the guard portion 8 proximate a first end 18 of the guard portion and a second arm 14 joining the guard portion proximate a second end 20 of the guard portion.
  • the first set of arms 9 preferably includes additional arms 21 disposed between the first and second arms 10, 14.
  • the blade assembly further includes a second arm means 22 disposed inwardly of the ends of the platform member 1 and extending from the base portion 2 generally toward, and terminating short of, the guard portion.
  • the second arm means 22 include second and third sets of arms 24, 26.
  • a first blade means 28 is disposed on the second set of arms 24 and a second blade means 30 is disposed on the third set of arms 26.
  • the base portion 2, arm means 6, 22, and guard portion 8 are of molded material and are molded as a single, unitary and integral member.
  • the arm means function as leaf springs, permitting movement of the guard portion and the blade means relative to the base portion and the cap portion, and to each other, during a shaving operation.
  • the first blade means 28 is provided with apertures 32 through which extend the third set of arms 26, the ends of which support the second blade means 30.
  • the platform member 1 includes a frame portion 34 extending parallel to the base portion 2 and interconnecting the platform end portions 12, 16. Extending between the frame portion 34 and the base portion 2 are bridge members 36, each provided with first, second and third protrusions, 38, 40, 42. As will be further described below, the protrusion 38 operates as a stop means for the first blade means 28 and the protrusion 40 operates as a stop means for the second blade means 30.
  • the second protrusions 40 extend through openings 44 in the first blade means 28, enabling the second protrusions to be engaged by the second blade means 30.
  • the third protrusions 42 extend through apertures 46 in the first blade means 28 to underlie the second blade means 30.
  • the cap portion 4 includes downwardly- extending protrusions 48 which pass through holes 50 in the second blade means 30 and overlie the upper surface of the first blade means 28.
  • the bridge members are molded integrally with the remainder of the platform member 1 and the protrusions 48 are molded portions of the cap 4.
  • the platform and cap portions are molded with means for interconnection.
  • the cap 4 is provided with end portions 52 interconnected by a back portion 54. Rivet members 56 depend from the end portions 52 and the back portion 54.
  • the platform portion 1 is provided with holes 58 on its end portions 12, 16 and base portion 2 adapted to receive the rivet members 56.
  • the second bladed means 30 is placed on the underside of the cap portion 4, inverted for the assembly operation, with the protrusions 48 extending through the holes 50.
  • the first blade means 28 is then placed over the second blade means 30.
  • the platform portion 1 is fitted onto the cap portion 4 and over the first blade means 28, the apertures 32, 46 and openings 44 permitting the third set of arms 26 and the protrusions 40, 42 to extend through the first blade means.
  • the rivet members 56 are secured in the platform holes 58 by heading over, bringing the second blade means 30.to rest on the third set of arms 26.
  • the cap portion 4 is formed with a shoulder 60 which bears against the first blade means 28, as seen in
  • the guard portion 8 has on either end thereof outwardly extending detents 62 which, in assembly, are received by recesses 64 in the cap end portions 52.
  • the guard portion 8 is further provided with stop portions 63 on the underside of the guard portion, the stop portions 63 being in alignment with stop portions 65 upstanding from the frame member 34. Two of the stop portions 65 may comprise portions of the bridge members 36.
  • the first blade means 28 rests upon the second set of arms 24 proximate the cutting edge of the first blade means, the rearward edge thereof being loosely held in a pocket (Fig. 8) formed by the cap and platform portions, and particularly the shoulder portion 60 of the cap.
  • the pocket 66 provides sufficient freedom to permit the first blade means to pivot about its rearward edge.
  • the upstanding protrusions 42 prevent the first blade from sliding forwardly or backwardly.
  • the second blade means rests upon the third set of arms 26, its rearward edge being disposed in a pocket 68 formed by the cap portion and the protrusions 42.
  • the pocket 68 provides sufficient freedom to permit the second blade to pivot about its rearward edge.
  • the second blade means is prevented from sliding forwardly or backwardly by the protrusions 48.
  • the guard portion 8 is freely movable during a shaving operation by virtue of the spring leaf-like qualities of the arms 10, 14.
  • the stop portions 65 of the frame portion 34 and upper surfaces 67 of the recesses 64 limit the movement of the guard portion, the guard stop portions 63 abutting the frame stop portions 65 at the lower extent of the permissible movement of the guard portion, and the detents 62 abutting the upper surfaces 67 of the recesses 64 at the upper extent of the permissible movement of the guard portion.
  • the blade means 28, 30 are each freely and independently movable during a shaving operation by virtue of the spring leaf-like qualities of the arms 24, 26.
  • the cutting edge of the first blade means 28 can be depressed, or moved downwardly and pivotally about its rear edge, until the first blade means strikes the first protrusion 38.
  • the second blade means 30 can be depressed, or moved downwardly and pivotally about its rear edge until the second blade means strikes the second protrusion 40.
  • the guard and blade members may move dynamically in response to forces and pressures acting on the blade assembly during shaving, the guard and blade means being movable in a substantially arcuate path about a rear portion of the blade assembly.
  • the first blade means 28' is provided with enlarged apertures 32', greatly reducing the surface area of the first blade means.
  • the first blade means essentially comprises a first cutting edge strand portion 100 of blade material, a first parallel base strand portion 102 of blade material, interconnecting end strand portions 104 and interconnecting intermediate strand portions 106.
  • the second blade means 30' is provided with enlarged holes 50', substantially reducing the surface area of the second blade means.
  • the second blade means essentially comprises a second cutting edge strand portion 110 of blade material, a second parallel base strand portion 112 of blade material, interconnecting end strand portions 114 and interconnecting intermediate strand portions 116.
  • first and second protrusions 38', 40' are provided with flat upper surfaces 118, 120.
  • second and third sets of arms 24'. 26' are provided with flat upper surfaces 122, 124. The surfaces 122 engage and support an underside of the first cutting edge strand portion 100, of the first blade means 28'.
  • the surfaces 124 engage and support an underside of the second cutting edge strand portion 110 of the second blade means 30'.
  • the surface 118 of the first protrusion 38' acts as a stop means for the first blade means 28' and the surface 120 acts as a stop means for the second blade means 30'.
  • the flat upper surfaces 118, 120, 122, 124 insure sufficient and stable contact with the relatively limited associated blade area.
  • Figs. 9 and 10 provide a more "open" razor head, facilitating the flow of shaving debris therethrough.
  • the central arm 70 of the second set of arms 24 is substantially U-shaped, permitting a central location of such arm, as well as a central location for the central arm 72 of the third set of arms 26.
  • the blade assembly is provided with attachment means 74 by which the assembly may be releasably connected to a razor handle.
  • attachment means 74 by which the assembly may be releasably connected to a razor handle.
  • the structure and operation of such attachment means is fully shown and described in U.S. Patent 4270268.
  • the blade assembly may be permanently fixed to a handle (not shown) the entire blade assembly and handle constituting a razor which is disposable as a unit after dulling of the blade cutting edges.
  • Fig. 11 there is illustrated an additional alternative embodiment in which the guard portion 8" is fixed to the base portion 2", leaving the remainder of the assembly substantially as described above.
  • the blade means 28", 30" are independently movable during a shaving operation, the blade means 28", 30" being adapted to move dynamically with their respective sets of supporting arms in response to forces acting on the blade assembly during shaving.
  • the blade means are movable in a substantially arcuate path about a rear portion of the blade assembly.

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

Claims (11)

1-. Rasierklingeneinheit mit einer Plattform (1), die einen hinteren Längsrand besitzt, der einen Tragteil (2) bildet, ferner einen dazu im wesentlichen parallelen, vorderen Längsrand und Schmalseitenteile (12, 16), die den Tragteil und den vorderen Rand miteinander verbinden, ferner mit einer Kappe (4), mindestens einer Klinge (28, 30), die zwischen der Plattform under der Kappe angeordnet ist, und einer dem vorderen Rand der Plattform zugeordneten Abschirmung (8), dadurch gekennzeichnet, daß sich elastische Klingenabstützarme (22) von dem Tragteil (2) zu der Abschirmung (8) hin erstrecken.
2. Rasierklingeneinheit nach Anspruch 1, dadurch gekennzeichnet, daß die Abschirmung (8) und die Klingen (28, 30) von Armen (6, 24, 26) getragen werden, die sich von dem Tragteil (2), nach vorn erstrecken.
3. Rasierklingeneinheit nach Anspruch 2, dadurch gekennzeichnet, daß die Arme (6, 24, 26) Blattfedern sind.
4. Rasierklingeneinheit nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Tragteil (2) und die Abschirmung (8) durch einen ersten Satz von Armen (6) miteinander verbunden sind und daß eine erste Klinge (28) von einem zweiten Satz von Armen (24) und eine zweite Klinge (30) von einem dritten Satz von Armen (26) getragen ist.
5. Rasierklingeneinheit nach Anspruch 4, dadurch gekennzeichnet, daß die Arme (26) 'des dritten Satzes Ausnehmungen (32) der ersten Klinge (28) durchsetzen.
6. Rasierklingeneinheit nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß beim Rasieren die erste und die zweite Klinge (28, 30) unabhängig voneinander im Bogen um den Tragteil und die Kappe herum bewegbar sind.
7. Rasierklingeneinheit nach Anspruch 6, dadurch gekennzeichnet, daß beim Rasieren die Abschirmung (8) und die Klingen (28, 30) unabhängig voneinander im Bogen um den Tragteil und die Kappe herum bewegbar sind.
8. Rasierklingeneinheit nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß auf der Plattform (1) Anschläge (38, 40) vorgesehen ist, die die Bewegung der ersten und der zweiten Klinge (28, 30) begrenzen, und daß die die Bewegung der zweiten Klinge (30) begrenzenden Anschläge Ausnehmungen (44) der ersten Klinge (28) durchsetzen.
9. Rasierklingeneinheit nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Abschirmung (8) gegenüber der Plattform (1) ortsfest und die oder jede Klinge (28, 30) gegenüber der ortsfesten Abschirmung bewegbar ist.
10. Rasierklingeneinheit nach Anspruch 7, dadurch gekennzeichnet, daß eine erste Klinge (28') eine erste Schneidenleiste (100) und eine erste Tragleiste (102) besitzt, die im wesentlichen parallel zu der ersten Schneidenleiste (100) und im Abstand von ihr angeordnet ist, daß die erste Schneidenleiste und die erste Tragleiste durch Verbindungsleisten (104, 106) miteinander verbunden sind, daß die erste Klinge (28') von einem Satz von Armen (24') getragen ist, die sich von dem Tragteil erstrecken und um ihre Verbindungsstellen mit dem Tragteil elastisch biegbar sind, um eine bogenförmige Bewegung der ersten Schneidenleiste (100) um den Tragteil zu erleichtern, daß eine zweite Klinge (30') eine zweite Schneidenleiste (110) und eine zweite Tragleiste (112) besitzt, die parallel zu der zweiten Schneidenleiste und parallel zu ihr angeordnet ist, daß die zweite Schneidenleiste und die zweite Tragleiste durch Verbindungsleisten (114, 116) miteinander verbunden sind, und daß die zweite Klinge (30') von einem zweiten Satz von Armen (26') getragen wird, die sich von dem Tragteil erstrecken und die zweite Klinge tragen und um ihre Verbindungsstellen mit dem Tragteil elastisch biegbar sind, um eine bogenförmige Bewegung der zweiten Schneidenleiste um den Tragteil zu erleichtern.
11. Rasierklingeneinheit nach Anspruch 10, dadurch gekennzeichnet, daß die Arme (24') des genannten Satzes Abflachungen (122) zur Anlage an der ersten Schneidenleiste (100) und die Arme (26') des weiteren Satzes ebenfalls Abflachungen (124) zur Anlage an der zweiten Schneidenleiste (110) besitzen.
EP19810105758 1980-08-07 1981-07-21 Rasierklingeneinheit Expired EP0045879B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US06/176,138 US4324041A (en) 1980-08-07 1980-08-07 Razor blade assembly
US176138 1980-08-07
US229623 1981-01-29
US06/229,623 US4337575A (en) 1980-08-07 1981-01-29 Razor blade assembly
US253071 1981-04-10
US06/253,071 US4403412A (en) 1980-08-07 1981-04-10 Razor blade assembly

Publications (2)

Publication Number Publication Date
EP0045879A1 EP0045879A1 (de) 1982-02-17
EP0045879B1 true EP0045879B1 (de) 1984-11-07

Family

ID=27390640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810105758 Expired EP0045879B1 (de) 1980-08-07 1981-07-21 Rasierklingeneinheit

Country Status (4)

Country Link
EP (1) EP0045879B1 (de)
BR (1) BR8105082A (de)
DE (1) DE3167072D1 (de)
GR (1) GR74632B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709477A (en) * 1986-09-02 1987-12-01 Warner-Lambert Company Blade assembly featuring variable span
DE8910490U1 (de) * 1989-09-02 1991-01-10 Wilkinson Sword GmbH, 5650 Solingen Rasierapparatekopf eines Naßrasierapparates
HU212399B (en) * 1990-06-11 1996-06-28 Gillette Co Safety razor
WO1993001917A1 (en) * 1991-07-18 1993-02-04 Warner-Lambert Company Razor head with variable shaving geometry
ZA951655B (en) * 1994-04-28 1995-12-08 Warner Lambert Co Dynamic flexible razor head
US5666729A (en) * 1995-04-10 1997-09-16 Warner-Lambert Company Suspended blade shaving system
US7200937B2 (en) 1997-01-17 2007-04-10 Eveready Battery Company, Inc. Razor head with moveable blade package
US20120192431A9 (en) * 2009-11-18 2012-08-02 Kevin James Wain Blades for Shaving Razors
JP6293464B2 (ja) * 2013-11-27 2018-03-14 株式会社貝印刃物開発センター 剃刀

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2327967A (en) * 1941-06-03 1943-08-24 Peters Peter Nicholas Safety razor
GB1274771A (en) * 1969-03-26 1972-05-17 Gillette Industries Ltd Improvements in safety razors and blades therefor
US3685150A (en) * 1970-07-27 1972-08-22 Philip Morris Inc Double edge safety razor embodying flexible blade pressure control
GB1566505A (en) * 1977-02-02 1980-04-30 Gillette Co Safety razor
DE3019399A1 (de) * 1979-05-25 1981-04-23 The Gillette Co., 02199 Boston, Mass. Kopf eines sicherheitsrasierapparates

Also Published As

Publication number Publication date
BR8105082A (pt) 1982-04-20
DE3167072D1 (en) 1984-12-13
GR74632B (de) 1984-06-29
EP0045879A1 (de) 1982-02-17

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