EP0311429B1 - Rasoirs de sûreté - Google Patents

Rasoirs de sûreté Download PDF

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Publication number
EP0311429B1
EP0311429B1 EP19880309383 EP88309383A EP0311429B1 EP 0311429 B1 EP0311429 B1 EP 0311429B1 EP 19880309383 EP19880309383 EP 19880309383 EP 88309383 A EP88309383 A EP 88309383A EP 0311429 B1 EP0311429 B1 EP 0311429B1
Authority
EP
European Patent Office
Prior art keywords
magazine
unit
blade
stack
plunger
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
EP19880309383
Other languages
German (de)
English (en)
Other versions
EP0311429A1 (fr
Inventor
John Frederick 17 Old Malt Way Francis
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 EP0311429A1 publication Critical patent/EP0311429A1/fr
Application granted granted Critical
Publication of EP0311429B1 publication Critical patent/EP0311429B1/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
    • B26B21/08—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
    • B26B21/24—Safety razors with one or more blades arranged transversely to the handle of the magazine type; of the injector type

Definitions

  • This invention relates to safety razors incorporating blade magazines and to the blade magazines themselves, which may be permanently associated with the razor handle or exchangeable.
  • the present invention is, in any event, concerned with magazines and magazine razors utilizing three-dimensional blade units, which present quite different problems in relation to effective storage and loading of the units and of sealing against the ingress of moisture into the magazine.
  • British Patent 2166380 discloses a blade unit magazine having two compartments and a mechanism for moving a blade unit from an operative shaving position in a first compartment to a stored retained position in a second compartment.
  • a blade unit magazine for a magazine type safety razor the magazine being of generally rectangular cross-section and open at one end and adapted to accommodate a plurality of razor blade units housed as a stack, each unit comprising at least one razor blade mounted above an imperforate support plate, manually operable advancing mechanism to enable transportation of said stack toward the open end, characterized in that a cap and a guard are provided at the open end of the magazine, said cap and guard being spaced apart to receive the outermost unit of the stack therebetween to present the blade or blades positioned between the cap and guard thereof in an operative shaving position, and in that a manually directly operable plunger is engageable with the innermost unit of the stack and, with the units bearing directly against each other for transmitting forces from the plunger through the stack, is operable to advance the stack and eject the outermost unit in the stack from the magazine and replace that ejected unit by the next unit in the stack, said plunger and magazine having teeth to prevent reverse movement of the plunger away from said open end,
  • Figs 1 to 3 illustrate the upper portion of the razor, which has a grip or handle 1 and a head 2 to which a magazine 3 is permanently secured.
  • the magazine is of generally rectangular cross-section and is open only at its outer end, i.e. the left-hand end as drawn. At its open end, or mouth, the magazine is formed with a cap 4 and a guard 6.
  • the magazine houses a stack of individual blade units 7, each comprising a generally rectangular support plate 8 carrying a tandem pair of blades 9, the outermost pair of which are positioned between the cap and guard in an operative position of use.
  • the tandem blade pair is preferably of the form described and illustrated in EP-A 293 683 published on 07/12/88.
  • each unit is precisely positioned in turn at the operative position, in which its support plate seals the interior of the magazine against the ingress of moisture and shaving debris to protect the remaining units in the stack.
  • the inner end of the magazine houses a plunger 11 bearing against the underside of the innermost unit, and a manually operated slide 12 whose forward end has a resilient ratchet finger 13 for engaging the plunger, and at its rear end it has a resilient latch 14 normally engaging against a fixed rear face of the magazine, to prevent inadvertent displacement of the stack.
  • the plunger is formed with a series of ratchet teeth 16 engageable in turn by the finger 13 and it also has its own ratchet finger 17 engageable with a set of ratchet teeth 18 formed on a fixed part of the magazine.
  • a coil compression spring 19 urges the slide to its rearmost position, as illustrated in Figs 1 and 3.
  • the cycle is repeatable until only the last unit remains, and when that has served its useful life, the whole razor is discarded, or if the magazine is exchangeable, it is discarded and replaced.
  • Figs 4 and 5 Detailed constructional features of the magazine and blade units are illustrated in Figs 4 and 5, in which Fig 4 shows the outermost unit in operative position, and Fig 5 shows that unit partially ejected.
  • each unit is supported at each end by metal-lic spring clips 21 of the form described and illustrated in the specification of co-pending application 8712785, which retain the blades in spaced parallel relation but permit independent resilient deflection thereof under forces encountered during shaving.
  • Each pair of blades and clips is mounted on a support plate 8 of moulded plastics construction and of generally rectangular form, filling the cross-section of the interior of the magazine 3 near its mouth. Adjacent each end, the plate 8 has integrally moulded upstanding projections forming resilient detents 81 and location edges 82. At each end, the plate 8 has a longitudinal extension 83 and an upstanding generally Z-shaped projection constituting a resilient non-return latch 84 and providing at its inner edge a location face 86.
  • the adjacent clip 21 is frictionally jammed between the face 86 and the location edges 82.
  • the magazine 3 has, as previously stated, a cap 4 and a guard 6. In its rear wall, beneath the cap 4, it is formed with soap-slots 31 for the clearance of water and shaving debris. These slots also form fixed locations for co-operation with the adjacent blade unit detents 81.
  • the adjacent detents 81 engage in slots formed in upstanding lugs 34. These lugs also serve to return the guard member 6, which is formed as a separate moulding having its own longitudinally extending cantilever springs (not shown) bearing on the magazine body.
  • the guard is held captive to the body by vertical guides (not shown) which constrain it to move vertically, i.e. perpendicular to the plane of the support plate 8.
  • the integral springs urge the guard 6 upwardly, away from the mouth of the magazine, but it can move downwardly, against the restoring forces exerted by the cantilever springs, under the forces encountered during shaving to increase conformance of the razor to skin contours.
  • the shorter end walls of the magazine are shaped to match the profile of the support plates 8 and at their upper ends have narrow notches 32 to receive and engage the latches 84 of the uppermost unit of the stack.
  • the uppermost blade unit in its operative position, is held firmly in its desired position relative to the cap and guard by the engagement of the detents 81 in the soap-slots 31 and slotted lugs 34.
  • FIG. 5 shows the unit partially ejected, with the next unit progressing towards the operative position.
  • the adjacent end wall of the magazine has a thickened cam portion 33, which cams the latch 84 inwardly.
  • the latch reaches the notch 32 it snaps back into it normal position to lock the unit against return movement.
  • the latches are only required to deflect inwardly as they pass over the thickened cam portions 33 in order to avoid strain and additional friction while the units are beneath that region of the magazine.
  • each support plate 8 is slightly chamfered downwardly and outwardly so as to have essentially line contact, all along the profile of the plate, with the interior wall surfaces of the magazine in the region of its mouth.
  • the chamfering results in the lower edges 87 being slightly resilient so as to conform more readily with the magazine walls to assist in forming a moisture-tight seal.
  • the above described arrangement facilitates the provision of a very compact magazine, utilizing twin bladed units, with due regard to the effective storage, positioning for use and successive replacement of the units in the magazine, as well as protection of the blade edges against mechanical damage and of the units against the ingress of moisture and shaving debris.
  • the simple rectilinear motion required to eject units and move fresh units into operative position permits the associated mechanism to be constructed in a simple manner, but with a high degree of reliability.

Landscapes

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

Claims (8)

  1. Magasin (3) de lames de rasoir (1, 2) de sûreté à magasin, le magasin ayant une section de forme générale rectangulaire, étant ouvert à une première extrémité et étant destiné à loger plusieurs ensembles (7) à lame de rasoir logés sous forme d'une pile, chaque ensemble comprenant au moins une lame (9) de rasoir montée au-dessus d'une plaque non perforée (8) de support, le magasin ayant un mécanisme manuel d'avance destiné à permettre le transport de la pile vers l'extrémité ouverte, caractérisé en ce qu'un capuchon (4) et un organe protecteur (6) sont disposés à l'extrémité ouverte du magasin, le capuchon et l'organe protecteur étant séparés afin qu'ils logent entre eux l'ensemble externe de la pile et présentent la lame ou les lames entre le capuchon et l'organe protecteur en position de rasage, et en ce qu'un plongeur (11) qui peut être directement manoeuvré à la main coopère avec l'ensemble interne de la pile et qui, comme les ensembles (7) sont directement en appui les uns contre les autres pour la transmission des forces du plongeur (11) par l'intermédiaire de la pile, est destiné à provoquer l'avance de la pile et l'éjection de l'ensemble externe de la pile en dehors du magasin et à remplacer l'ensemble éjecté par l'ensemble suivant de la pile, le plongeur et le magasin ayant des dents (16, 18) destinées à empêcher le déplacement en sens inverse du plongeur à distance de l'extrémité ouverte, et la plaque de support (8) de l'ensemble externe à lame coopèrant avec des parties de paroi du magasin (3) en empêchant de manière étanche l'entrée de débris et d'humidité.
  2. Magasin de lames selon la revendication 1, caractérisé en ce que les dents comportent un premier ensemble (16) d'encliquetage destiné à faire avancer le plongeur (11) par pas et un second ensemble (18) d'encliquetage destiné à empêcher le recul du plongeur (11) après chaque avance.
  3. Magasin de lames selon l'une des revendications 1 et 2, caractérisé en ce que chaque plaque de support (8) a un dispositif élastique d'enclenchement qui coopère avec des parties du magasin lorsque la plaque (8) atteint la position externe afin que l'ensemble soit fermement retenu dans cette position, le dispositif d'enclenchement pouvant être séparé par un mouvement ultérieur de commande du plongeur (11).
  4. Magasin de lames selon la revendication 3, caractérisé en ce que le dispositif d'enclenchement de chaque ensemble comprend des verrous (84) ayant des saillies tournées vers l'extérieur et qui s'enclenchent élastiquement dans des cavités coopérantes (32) de la paroi adjacente du magasin afin que l'ensemble externe soit bloqué et ne puisse pas reculer vers l'intérieur du magasin.
  5. Magasin de lames selon la revendication 3 ou 4, caractérisé en ce que les bords de chaque plaque (8) et le dispositif d'enclenchement sont placés à distance des parois du magasin (3) jusqu'à ce que l'ensemble (7) arrive à la position externe.
  6. Magasin de lames selon l'une quelconque des revendications précédentes, caractérisé en ce que les bords périphériques de chaque plaque de support (8) sont chanfreinés, si bien qu'ils sont élastiquement déformables et sont en contact pratiquement sous tension avec les parois du magasin (3) lorsque chaque ensemble est dans la position externe.
  7. Magasin de lames selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe protecteur (6) est monté afin qu'il puisse présenter un déplacement limité par rapport à la plaque de support (8) de l'ensemble externe (7) malgré l'action d'une force élastique de rappel en direction perpendiculaire au plan de la plaque de support.
  8. Magasin de lames selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque ensemble comporte une lame (9) ou une paire de lames (9, 9) montées en tandem, et le dispositif de montage comprend un dispositif élastique qui permet un mouvement limité de la lame ou des lames afin qu'elles se rapprochent de la plaque de support (8) et s'en éloignent sous l'action des forces subies pendant le rasage.
EP19880309383 1987-10-08 1988-10-07 Rasoirs de sûreté Expired - Lifetime EP0311429B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878723656A GB8723656D0 (en) 1987-10-08 1987-10-08 Safety razors
GB8723656 1987-10-08

Publications (2)

Publication Number Publication Date
EP0311429A1 EP0311429A1 (fr) 1989-04-12
EP0311429B1 true EP0311429B1 (fr) 1993-02-03

Family

ID=10624996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880309383 Expired - Lifetime EP0311429B1 (fr) 1987-10-08 1988-10-07 Rasoirs de sûreté

Country Status (5)

Country Link
EP (1) EP0311429B1 (fr)
CA (1) CA1322274C (fr)
DE (1) DE3878127T2 (fr)
ES (1) ES2037235T3 (fr)
GB (1) GB8723656D0 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857667A (en) * 1957-09-26 1958-10-28 Baun John E De Magazine type safety razor
US3587170A (en) * 1968-12-19 1971-06-28 Glenn T Randol Safety razor with disposable blade magazine
GB2114491A (en) * 1982-02-15 1983-08-24 Gillette Co Safety razors
GB2166380B (en) * 1984-10-23 1988-02-24 Tony Ruiz Razors

Also Published As

Publication number Publication date
DE3878127T2 (de) 1993-08-26
DE3878127D1 (de) 1993-03-18
ES2037235T3 (es) 1993-06-16
CA1322274C (fr) 1993-09-21
GB8723656D0 (en) 1987-11-11
EP0311429A1 (fr) 1989-04-12

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