EP2219830B1 - Anpassbarer nassrasierer - Google Patents

Anpassbarer nassrasierer Download PDF

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Publication number
EP2219830B1
EP2219830B1 EP08843680A EP08843680A EP2219830B1 EP 2219830 B1 EP2219830 B1 EP 2219830B1 EP 08843680 A EP08843680 A EP 08843680A EP 08843680 A EP08843680 A EP 08843680A EP 2219830 B1 EP2219830 B1 EP 2219830B1
Authority
EP
European Patent Office
Prior art keywords
frame
cartridge
spring elements
blade
sub
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.)
Not-in-force
Application number
EP08843680A
Other languages
English (en)
French (fr)
Other versions
EP2219830A1 (de
Inventor
Kevin James Wain
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
Priority to PL08843680T priority Critical patent/PL2219830T3/pl
Publication of EP2219830A1 publication Critical patent/EP2219830A1/de
Application granted granted Critical
Publication of EP2219830B1 publication Critical patent/EP2219830B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B26B21/22—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 present invention relates to a razor suitable for use for wet shaving wherein the razor comprises a conforming cartridge that includes rear spring elements that foldably engage with the remainder of the cartridge.
  • This invention relates to a wet shaving razor comprising a cartridge and an adjoining handle and includes a shaving blade with a cutting edge which is moved across the surface of the skin being shaved by means of the handle.
  • a cartridge may be mounted detachably on a razor handle to enable the cartridge to be replaced by a fresh cartridge when the blade sharpness has diminished to an unsatisfactory level, or it may be fixedly attached to the handle with the intention that the entire razor be discarded when the blade or blades have become dulled.
  • Detachable and replaceable cartridges are commonly referred to as shaving cartridges.
  • the present invention relates to a wet shaving razor comprising a cartridge having a length wherein the cartridge comprises:
  • each rear spring element is deformable in such a manner so that it exerts a substantially constant restoring force irrespective of the degree of deformation.
  • the deformation of the cartridge under shaving forces can vary along the length of the cartridge enabling the cartridge to conform to skin undulations along the cartridge, with the forces exerted by the cartridge against the skin being substantially uniform along the cartridge.
  • close conformity between the cartridge and the skin contours can be achieved without causing discomfort due to the cartridge being pressed against the skin under higher forces in certain confined areas.
  • This easily achieved conformation of the cartridge may be attributable to the rear spring elements comprising a sheet of resiliently flexible material.
  • the cartridge comprises an upper frame on which the shaving blade is carried, and a sub-frame, with rear spring elements being interposed between the upper frame and the sub-frame.
  • the cartridge is formed by a unitary molding of a resiliently flexible material, such as rubber or rubber-like material, the rear spring elements then being integral with the upper frame (particularly the upper face) and joined at a rear edge of the sub-frame via a catch plate. With the cartridge formed as a unitary mold piece, manufacture of the cartridge is facilitated as assembly of components is minimized.
  • the upper frame is preferably hinged to the sub-frame at the front of the cartridge, and, with a molded construction, the connection between them may be conveniently provided by a living hinge.
  • the hinged connection between the upper frame and the sub-frame is displaceable downwardly, generally towards a handle, under load forces exerted at a front portion of the upper frame.
  • the sub-frame may be supported with respect to an underlying base in a manner permitting movement of the sub-frame towards the base against the action of front spring elements which can also be formed by sheets of resiliently flexible material which deform by buckling so that a substantially constant return force is exerted on the sub-frame.
  • a portion of the upper frame may form a guard for contacting the skin ahead of the shaving blades during a shaving stroke, and a cap for contact with the skin behind the blades.
  • a separate guard element and/or a separate cap element could be mounted on the upper frame, although any such separate element would need to exhibit substantial flexibility along its length, or perhaps be divided up into short segments so as not to inhibit the flexing of upper frame to conform to the skin contours.
  • One type of element suitable for mounting or incorporation into the guard surface or cap surface is a lubricating strip.
  • the cartridges of the invention may have a single shaving blade, a plurality of blades, e.g. 2, 3, 4, 5, 6, 7, 8, or even more blades, may be included and extend continuously along the cartridge with their sharpened edges substantially parallel. These blades are flexible for conforming to the skin contours. Another possibility is for several blade segments to be disposed along the cartridge so that they are able to move relative to each other as the upper frame flexes.
  • the blade(s) may be interconnected by transverse strips attached to the undersides of the blades, these strips and the blades together forming a flexible blade assembly in which, in an undeformed condition, the blades and strips are substantially coplanar to enhance the flexibility of the blade frame.
  • the blades may be securedly mounted atop blade supports where the sharpened cutting edges are bent forward away from the plane of the blade frame to provide non-coplanar approach angle for the blades against the hair.
  • the wet shaving razor 5 in FIGS. 1 and 2 has a handle 10 on which a conforming cartridge 15 is mounted.
  • the handle 10 has joined to it a base 8 to which the cartridge 15 may be fastened, but the cartridge could also be releasably connected to the handle 10 to allow replacement of the cartridge 15.
  • the cartridge 15 comprises an upper frame 6 and a sub-frame 7 joined at a front edge of the cartridge 15.
  • the upper frame 6 comprises a blade frame 1 that comprises a shaving blade 3 wherein the blade frame 1 may be incorporated by clipped in insertion or via insert molding with the latter being advantageous.
  • the cartridge 15 consists of a unitary molding of rubber or a material having similar resiliently flexible properties to materials having appropriate characteristics include BASF's Elastollan C60A10W.
  • the cartridge 15 comprises an upper frame 6 having an upper face 2 (having a top edge 30 and a bottom edge 31, which actually corresponds and coincides with the front edge 35 of the cartridge) surrounding the blade frame 1 (which includes a shaving blade 3), a sub-frame 7 which has the form of a plurality of rectangular beams joined together by living hinges, and a base 8.
  • the upper frame 6 is hingedly connected to the sub-frame 7 at the bottom edge of the upper face 2 and at front edge 35 of the sub-frame 7.
  • the upper frame 6 and sub-frame 7 are integral and are connected by a living hinge 9 at their forward edges.
  • the upper frame 6 and the sub-frame 7 lie in first and second planes respectively, and are relatively positioned normally to diverge from each other rearwardly away from the hinge 9.
  • the sub-frame 7 and the base 8 are hingedly connected at the rear of the cartridge, and more especially the sub-frame 7 and base 8 are integrally connected by a living hinge 11 at a rear (or back) 36 edge of the sub-frame.
  • the sub-frame 7 and base 8 are normally disposed to diverge from each other in the direction forwardly away from the hinge 11. With this configuration, the upper frame 6, sub-frame 7 and base 8, as viewed in right end elevation ( FIG.
  • the sub-frame 7 is supported with respect to the base 8 by one or more (in the case shown in FIGS. 1 and 2 there are several) rear spring elements 14 serially arranged along a rear length of the upper face of the cartridge 15. These rear spring elements 14 are formed by resiliently flexible webs integral with the upper frame. Each of the rear spring elements 14 has a proximate end 16 and a distal end 17 where the proximate end 16 is joined adjacent a top edge 30 of the upper face and where the distal end 17 is joined to a catch plate 18 as shown in FIG. 3 .
  • the distal ends 17 of each of the rear spring elements 14 may comprise engaging tips 38 that are useful for joining the distal ends 17 to mating gripping projections 39 that are spaced along a length of the catch plate 18.
  • the distal ends 17 of the rear spring elements 14 are joined to the catch plate 18 and the catch plate 18 is then foldably engaged with a rear edge 36 of the sub-frame 7 by pushing the catch plate 18 downward (from its natural upward positioned state after molding manufacture) to the rear edge 36 of the sub-frame 7.
  • the catch plate 18 it is possible for the catch plate 18 to be formed integrally with the upper frame 6 or not.
  • catch plate 18 from the same material as the upper frame 6 or from a different material that possesses the same or different physical properties than the upper frame material.
  • a different material may be harder than the rubber or elastomeric material of the spring elements.
  • Suitable materials include, but are not limited to Noryl Pyx5511® and ABS Cycolac® (both obtained from Saudi Basic Industries Corporation, Selkirk, New York), Delrin® (DuPont), polystyrene, etc.
  • the rear spring elements 14 lie in respective planes perpendicular to the length of the cartridge 15.
  • the resiliently flexible nature of the upper frame 6 and the sub-frame 7 is such that localized portions of the upper frame 6 and the blade 3 incorporated therein may be deflected towards the razor handle 10 in order to adapt to the skin contours. In adapting to the skin contours, the upper frame 6 and the blade 3 may contort to comply with the undulations of the skin area over which they are moving. Therefore, the cartridge 15 is resiliently compliant to ensure close contact with the skin over the full area spanned by the blades.
  • front spring elements 12 comprising flexible webs are distributed along a forward length of the upper face of the cartridge 15.
  • the front spring elements 12 extend between the sub-frame 7 and the base 8 and are integrally formed with the upper face of the cartridge 15.
  • the front spring elements 12 are uniformly spaced apart along the length of the cartridge.
  • the front spring elements 12 typically lie in respective parallel planes perpendicular to the planes of the upper frame 6 and the sub-frame 7.
  • the rear spring elements 14 have a depth and/or width that is less than a depth and/or width of the front spring elements.
  • the shaving blade 3 occurs in a plurality. That is, there are numerous blades positioned parallel to one another to provide an improved shaving experience.
  • the cartridge may comprise at least 3 blades, at least 4 blades, at least 5 blades, at least 7 blades, or at least 8 blades. It should be clear that a larger number of blades may be incorporated into the cartridge of the present invention so long as the overall cartridge dimensions are acceptable and useful for a shaving consumer.
  • the blade to blade span may be in the range of from about 0.25 mm, 0.5 mm, 0.6 mm, 0.7 mm to about 1.5 mm, 0.85 mm, or 0.8 mm. In the present embodiment, the span is about 0.75 mm.
  • the shaving blade 3 has a thickness which ranges from about 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.065mm to about 0.08mm, 0.075mm, or 0.07mm. In this embodiment, the thickness is about 0.66mm.
  • the shaving blade 3 also has a width which ranges from about 0.2mm, 0.3mm, 0.35mm to about 0.6mm, 0.5mm, and 0.45mm. In this embodiment, the blade width is about 0.4mm.
  • the upper frame 6 further comprises a guard member 22 and a shaving blade 3 (here, a multiplicity of blades 3), the guard member 22 and the blades 3 being formed by flexible strips of metal. Where there is a plurality of blades included in the upper frame 6, they have parallel forwardly facing sharpened cutting edges.
  • the guard member 22 and the blades 3 are interconnected and reinforced by transverse connecting strips 24 used for the manufacture of blade in conventional cartridges, which may be made of the same material as the blades 3, e.g. steel, and which are attached to the undersides of the blades (and any blade supports 13 that may be present) and guard member 22.
  • the shaving blades are mounted on blade supports 13 while the blade supports 13 are joined to a blade frame 1 which is then integrated into the upper frame 6.
  • the shaving blades 3 and/or supports 13 may be folded up from the plane of the blade frame 1 to provide an optimal shaving angle.
  • the shaving angle may range from about 0 to about 35 degrees, from about 5 to about 30 degrees, from about 10 to about 30 degrees, from about 20 to about 30 degrees, from about 22 to about 26 degrees, or about 24 degrees.
  • Another means for configuring blades within a shaving assembly is disclosed in US Patent 6804886B2 .
  • Applicant has found that molding (e.g., injection) an elastomeric and/or rubber material around the shaving blade allows for insertion of the blade without any deleterious stretching of the upper frame and/or sub-frame which may result in a damaged cartridge or an uncomfortably performing shaving cartridge. Any non-shaving portions of the shaving blade are covered by the rubber and/or elastomeric material to heighten comfort.
  • the shaving stresses instead of being concentrated at the anchor points are shared along a much longer piece of steel so it is less likely that the blade will ever pull out.
  • the upper frame and sub-frame material comprises from about 0.1% to about 25%, from 1% to about 20%, from about 5% to about 20%, from about 10% to about 20%, or about 15%, of plasticizer.
  • plasticizer elastomeric materials are rather difficult to eject from molds during manufacture. For instance, elastomeric forms like the cartridge of the present invention that are longer in the direction of ejection and narrower across the direction of ejection are particularly hard to eject from molds.
  • the front and rear spring elements are shorter or of reduced depth in comparison to earlier versions of a conforming razor cartridge as disclosed in US Patents 7024776B2 and 7131203B2 .
  • the rear spring elements have a depth that is less than about a depth of the front spring elements.
  • the rear spring elements have a width that is less than about a width of the front spring elements.
  • the upper frame 6 comprises a locating hole 33 on one or both sides of the upper frame.
  • the locating hole 33 may have a diameter ranging in size from 0.5 mm to about 4 mm, 1 mm to about 3 mm, or about 2 mm. These holes may be particularly useful during manufacture as they may be used to locate the blades in one or more welding fixtures and the mold. They may also be used to align a plurality of cartridges during safe storage.
  • the location holes 33 may be designed to further comprise a location hole projection (not shown) that protrude from the upper frame 6 during manufacturing that is intended to be cut off toward the end of the manufacturing process to minimize the overall size of the cartridge.
  • locating hole 33 may be present in a variety of shapes forming an aperture, e.g., rectangular, triangular, elliptical, square, wavy, slitted, and even combinations thereof.
  • the guard member 22 spans the length of the cartridge 15 and may comprise a plurality of ribs 23 that work together to provide a skin stretching benefit to a shaver prior to blade engagement of a shaver's hair.
  • a cap 25 of the upper frame 6 may be instrumental in determining the shaving geometry of a wet shaving razor. This typically comes into relevance in the case where a plurality of blades 3 is included in the cartridge.
  • shaving geometry is understood to include a measurement of the "exposure" of a rearwardmost blade edge nearest a cap, as known from the prior art, e.g., as disclosed in U.S. Patent No. 6212777 .
  • the exposure of the rearward blade is determined relative to a substantially fixed, rigid portion of the cartridge 15.
  • the cap 25 is a portion of the upper frame which in turn comprises resiliently flexible material it is presumed that the cap 25 need not be substantially fixed or rigid in comparison to the remainder of the cartridge in order to obtain the measurement.
  • the cap 25 of the cartridge 15 may include shaving aid member 26 which sits on a front edge or adjacent a rear edge of the upper frame 6. As shown in FIGS. 1 and 2 , where a shaving aid member is present and there is a plurality of blades 3, the exposure of a rearward blade may be determined relative to a shaving aid member surface that is disposed on or near the cap 25.
  • Suitable shaving aid members 26 may be selected from the group consisting of lubrication strips, indicator strips, soap wings, shave gel bars, and combinations thereof. Such shaving aid members are disclosed in US Patents 5956848 , 5998431 , 5906834 , 6185822 , 6298559 , 6301785 , 6442839 , 6944952 , 7069658 ; and US Patent Publications US 2006/0143925 A1 , 2006/0080838 A1 , and 2007/0110703 A1 .

Landscapes

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

Claims (15)

  1. Nassrasierer (5), eine Kassette (15) mit einer Länge aufweisend, wobei die Kassette umfasst:
    a) einen oberen Rahmen (6), umfassend:
    1) einen Klingenrahmen (1),
    2) eine Rasierklinge (3), die an den Klingenrahmen (1) angefügt ist, wobei die Klinge (3) sich in Längsrichtung entlang der Kassette (15) erstreckt,
    3) eine obere Fläche (2), die den Klingenrahmen (1) umgibt, und
    4) eines oder mehrere in Reihe angeordnete hintere Federelemente (14), wobei jedes Element ein proximales und ein distales Ende (16, 17) aufweist, derart, dass das proximale Ende (16) angrenzend an einen oberen Rand (30) der oberen Fläche angefügt ist, und wobei das distale Ende (17) an eine Mitnehmerplatte (18) angefügt ist,
    b) einen Unterrahmen (7), auf dem der untere Rand (31) des oberen Rahmens (6) federelastisch in der Nähe eines vorderen Rands (35) des Unterrahmens (7) angebracht ist, wobei der Unterrahmen ferner vordere Federelemente (12) aufweist, und dadurch gekennzeichnet, dass die Kassette (15) ferner umfasst:
    c) eine Mitnehmerplatte (18), die bewirkt, dass die hinteren Federelemente (14) faltbar an einem hinteren Rand (36) des Unterrahmens (7) angreifen, um lösbar befestigte hintere Federelemente (14) bereitzustellen, und
    wobei die vorderen Federelemente (12) und die hinteren Federelemente (14) einer lokalen Verformung der Kassette (15) unter Rasierkräften, die während des Rasierens auftreten, Widerstand leisten.
  2. Nassrasierer nach Anspruch 1, wobei die Rasierklinge durch mindestens einen quer angeordneten Verbindungsstreifen verstärkt ist.
  3. Nassrasierer nach Anspruch 1, wobei das distale Ende ferner eine angreifende Spitze aufweist.
  4. Nassrasierer nach Anspruch 3, wobei die angreifende Spitze einen Greifvorsprung der Mitnehmerplatte greift.
  5. Nassrasierer nach Anspruch 1, wobei die hinteren Federelemente eine Tiefe aufweisen, die geringer ist als ungefähr eine Tiefe der vorderen Federelemente.
  6. Nassrasierer nach Anspruch 1, wobei die hinteren Federelemente eine Breite aufweisen, die geringer ist als ungefähr eine Breite der vorderen Federelemente.
  7. Nassrasierer nach Anspruch 1, wobei die hinteren Federelemente gelenkig an den oberen Rand der oberen Fläche angefügt sind.
  8. Nassrasierer nach Anspruch 1, wobei der obere Rahmen und der Unterrahmen einstückig geformt sind.
  9. Nassrasierer nach Anspruch 1, wobei die Mitnehmerplatte einstückig mit den hinteren Federelementen geformt ist.
  10. Nassrasierer nach Anspruch 1, wobei die Mitnehmerplatte aus einem anderen Material gebildet ist als der obere Rahmen.
  11. Nassrasierer nach Anspruch 1, wobei die Kassette ferner eine Basis aufweist, auf der der Unterrahmen befestigt ist.
  12. Nassrasierer nach Anspruch 1, wobei eine Rasierklinge mindestens drei Rasierklingen umfasst.
  13. Nassrasierer nach Anspruch 1, wobei die obere Fläche ferner einen Rasierhilfsmittelstreifen aufweist, der zumindest über einen Teil der Länge der oberen Fläche reicht.
  14. Nassrasierer nach Anspruch 13, wobei der Rasierhilfsmittelstreifen eine Mehrzahl von Abschnitten aufweist, die entlang der Länge der oberen Fläche voneinander beabstandet sind.
  15. Nassrasierer nach Anspruch 1, wobei der obere Rahmen eine Positionierungsöffnung umfasst.
EP08843680A 2007-11-02 2008-10-30 Anpassbarer nassrasierer Not-in-force EP2219830B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08843680T PL2219830T3 (pl) 2007-11-02 2008-10-30 Adaptacyjna maszynka do golenia na mokro

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US161707P 2007-11-02 2007-11-02
PCT/IB2008/054524 WO2009057071A1 (en) 2007-11-02 2008-10-30 Conforming wet shaving razor

Publications (2)

Publication Number Publication Date
EP2219830A1 EP2219830A1 (de) 2010-08-25
EP2219830B1 true EP2219830B1 (de) 2012-03-21

Family

ID=40404972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08843680A Not-in-force EP2219830B1 (de) 2007-11-02 2008-10-30 Anpassbarer nassrasierer

Country Status (11)

Country Link
EP (1) EP2219830B1 (de)
JP (1) JP2011500195A (de)
KR (1) KR20100083161A (de)
CN (1) CN101842196B (de)
AT (1) ATE550158T1 (de)
BR (1) BRPI0819252A2 (de)
MX (1) MX2010004760A (de)
PL (1) PL2219830T3 (de)
RU (1) RU2433910C1 (de)
TW (1) TW200936336A (de)
WO (1) WO2009057071A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2745350C (en) * 2008-12-19 2017-05-30 Spiros Gratsias Razor cartridge and mechanical razor comprising such a cartridge
US20110162209A1 (en) * 2010-01-06 2011-07-07 Kevin James Wain Blades for Shaving Razors
CN106956296B (zh) * 2011-10-06 2020-08-18 比克-维尔莱克 剃须刀片，剃须刀头及制造方法
CN110897737B (zh) * 2019-12-30 2021-02-23 吉林大学第一医院 一种能够集中收集处理头发的神经外科手术备皮器械

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1198503B (it) * 1983-01-14 1988-12-21 Athos Bergamaschi Testina di rasoio a due lame con tre elementi stampati senza soluzione di continuita'
GB8710963D0 (en) * 1987-05-08 1987-06-10 Gillette Co Safety razors
JPS6440475U (de) * 1987-09-03 1989-03-10
GB0025336D0 (en) * 2000-10-16 2000-11-29 Gillette Co Safety razors
GB0025339D0 (en) * 2000-10-16 2000-11-29 Gillette Co Safety razors
US20040020053A1 (en) * 2000-10-16 2004-02-05 The Gillette Company Safety razors
US6804886B2 (en) * 2000-10-16 2004-10-19 The Gillette Company Safety razors
GB2399045B (en) * 2003-02-19 2005-11-16 Gillette Co Safety razors

Also Published As

Publication number Publication date
CN101842196B (zh) 2012-01-25
KR20100083161A (ko) 2010-07-21
CN101842196A (zh) 2010-09-22
JP2011500195A (ja) 2011-01-06
BRPI0819252A2 (pt) 2015-11-10
MX2010004760A (es) 2010-06-01
WO2009057071A1 (en) 2009-05-07
TW200936336A (en) 2009-09-01
PL2219830T3 (pl) 2012-08-31
EP2219830A1 (de) 2010-08-25
RU2433910C1 (ru) 2011-11-20
ATE550158T1 (de) 2012-04-15

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