EP0306710B1 - Rasierklingeneinheit - Google Patents

Rasierklingeneinheit Download PDF

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Publication number
EP0306710B1
EP0306710B1 EP88112761A EP88112761A EP0306710B1 EP 0306710 B1 EP0306710 B1 EP 0306710B1 EP 88112761 A EP88112761 A EP 88112761A EP 88112761 A EP88112761 A EP 88112761A EP 0306710 B1 EP0306710 B1 EP 0306710B1
Authority
EP
European Patent Office
Prior art keywords
shaving
wire
razor
razor blade
plastic body
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
EP88112761A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0306710A1 (de
Inventor
Wolfgang Althaus
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.)
Wilkinson Sword GmbH
Original Assignee
Wilkinson Sword GmbH
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 Wilkinson Sword GmbH filed Critical Wilkinson Sword GmbH
Priority to AT88112761T priority Critical patent/ATE81315T1/de
Publication of EP0306710A1 publication Critical patent/EP0306710A1/de
Application granted granted Critical
Publication of EP0306710B1 publication Critical patent/EP0306710B1/de
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
    • B26B21/40—Details or accessories
    • 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
    • B26B21/4006—Blades or blade units with discontinuous cutting edges, e.g. wire-wrapped, notches

Definitions

  • the invention relates to a razor blade unit for a wet shaving apparatus, in which a single razor blade or two parallel razor blades are embedded in a plastic body, the cutting edges of which are partially provided with a cover.
  • razor blade units for wet shavers of the type specified at the outset in which a single razor blade or a double razor blade is embedded in a plastic body, the cutting edges of the two razor blades being offset from one another in the double razor blade. So that bumps in the skin cannot be detected by the razor blades during the shaving process and thus cannot be the cause of skin injuries (skin irritations) that are sometimes not visible, it has already been proposed in such razor blade units that the cutting edge of the razor blade is cut into a thin sheet with a cutting edge to divide non-cutting segments.
  • a so-called revolver head wet shaver is known, in which several razor blades are arranged uniformly over the circumference on a common blade carrier which can be rotated about an axis by means of a rotary knob and forms a razor head.
  • the cutting edges of the razor blades run parallel to this axis of rotation.
  • the blade carrier can be rotated by means of the rotary knob in such a way that its razor blades are successively in the shaving position.
  • the known blade carrier, together with the razor blades is helically wrapped with wire.
  • a disadvantage of this turret wet shaving apparatus is first of all that the turns of the protective wire run obliquely with respect to the vertical of the cutting edges of the razor blades, which defines the shaving direction. This disadvantageously creates a cross component either on the protective wire or on the entire blade carrier, which impairs the shaving properties of the razor. This has a second disadvantage. So that the turns do not run too obliquely, very narrow turns with small distances between the wires must be provided. However, this significantly reduces the effective shaving area, so that the shaving process must be repeated in order to obtain a good shaving result.
  • a razor blade unit of the initially specified type of the invention has the object to provide a razor blade unit for a wet razor having an improved cover for the cutting edges of the razor blade.
  • the plastic body together old the razor blades is wrapped with a wire with several helical turns lying next to each other and the wire is at least partially guided in grooves formed in the plastic body, the individual turns in the area of the front pressure surface of the razor blade unit to the skin parallel to the shaving direction and at a distance from each other, while they run obliquely in the area of the back.
  • a razor blade unit for a wet shaver designed according to this technical teaching has a cover in the form of a protective wire which is considerably improved compared to the prior art and which considerably improves the shaving properties.
  • a major advantage is that the wire windings run exactly parallel to the shaving direction in the area of the front pressure surface, without any cross-components, be it on the protective wire or on the razor blade unit as such. This protective wire guide in the area of the front pressure surface thus ensures an optimal shaving process.
  • the turns of the protective wire in the front area parallel to the shaving direction and in the rear area obliquely, and due to the guide grooves of the protective wire without slipping in its predetermined positions, a large distance between the turns is made possible, so that overall the razor blade unit according to the invention only a few turns are needed to improve the shaving properties on the one hand and to provide effective protection against unintentional cutting on the other.
  • the particular advantage of the few turns is that the effective shaving area is only insignificantly reduced, so that nothing changes in the number of shaving operations during a shave compared to razor blade units without a protective wire.
  • the protective wire prevents the formation of a skin fold, so that skin injuries are avoided even in the invisible area.
  • the protective wire reduces the required shaving resistance because it also reduces the frictional force that occurs in the protective cap of the razor blade unit to approximately 50% of the total frictional force.
  • the wire is preferably made of metal, since metal with skin has a relatively low coefficient of friction, so that the required shaving resistance is reduced to a minimum.
  • the wire has a diameter of less than 0.1 mm, so that the effective shaving surface is only minimally reduced.
  • the razor blade unit for a wet shaver which can be attached to a handle, not shown, consists of a plastic body 1, in which two razor blades 2,2 'are embedded, the cutting edges 3,3' of which run parallel and offset to one another.
  • the plastic body 1 is wrapped together with the razor blades 2,2 'by means of a wire 4.
  • This wire 4 forms helical windings which run at a distance from one another, as can be seen in FIGS. 1 and 2.
  • the turns of the wire 4 run parallel to the shaving direction, while on the one in FIG. 2 shown back of the razor blade unit, the turns run obliquely.
  • the wire 4 is made of metal and preferably has a diameter of less than 0.1 mm. In order to prevent the turns of the wire 4 from shifting laterally on the plastic body 1, the latter is at least partially provided with grooves 5 in which the individual turns of the wire are guided.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Knives (AREA)
EP88112761A 1987-08-25 1988-08-05 Rasierklingeneinheit Expired - Lifetime EP0306710B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88112761T ATE81315T1 (de) 1987-08-25 1988-08-05 Rasierklingeneinheit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8711506U 1987-08-25
DE8711506U DE8711506U1 (de) 1987-08-25 1987-08-25 Rasierklingeneinheit

Publications (2)

Publication Number Publication Date
EP0306710A1 EP0306710A1 (de) 1989-03-15
EP0306710B1 true EP0306710B1 (de) 1992-10-07

Family

ID=6811392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112761A Expired - Lifetime EP0306710B1 (de) 1987-08-25 1988-08-05 Rasierklingeneinheit

Country Status (10)

Country Link
US (1) US5090124A (pt)
EP (1) EP0306710B1 (pt)
JP (2) JPS6470089A (pt)
KR (1) KR890003501A (pt)
AT (1) ATE81315T1 (pt)
BR (1) BR8804315A (pt)
DE (2) DE8711506U1 (pt)
ES (1) ES2035192T3 (pt)
GR (1) GR3006092T3 (pt)
HK (1) HK124094A (pt)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4914817A (en) * 1988-07-01 1990-04-10 The Gillette Company Razor head with riblets
US4985995A (en) * 1988-09-08 1991-01-22 Wilkinson Sword Gesellschaft Mit Beschrankter Haftung Razor head, especially a razor blade unit
ES2027360T3 (es) * 1988-09-08 1992-06-01 Wilkinson Sword Gesellschaft Mit Beschrankter Haftung Cabezal de aparato de afeitar, en especial unidad de cuchilla de afeitar.
DE9004760U1 (de) * 1990-04-27 1991-08-29 Wilkinson Sword GmbH, 5650 Solingen Rasierapparatekopf, insbesondere Rasierklingeneinheit, eines Naßrasierapparates
DE9004762U1 (de) * 1990-04-27 1991-08-29 Wilkinson Sword GmbH, 5650 Solingen Rasierapparatekopf, insbesondere Rasierklingeneinheit, eines Naßrasierapparates
GB2265327B (en) * 1992-03-06 1996-01-03 Wilkinson Sword Gmbh Razor head of a wet razor
GB2265328B (en) * 1992-03-13 1995-05-10 Wilkinson Sword Gmbh Razor head of a wet razor
DE9300148U1 (de) * 1993-01-08 1994-05-19 Wilkinson Sword Gmbh, 42659 Solingen Naßrasierapparat
US5343622A (en) * 1993-02-22 1994-09-06 Andrews Edward A Bi-directional razor device
JPH07303767A (ja) * 1994-05-13 1995-11-21 Feather Safety Razor Co Ltd 替え刃カートリッジ
US5456009A (en) * 1994-08-23 1995-10-10 Warner-Lambert Company Multi-blade razor head with improved performance
US5630275A (en) * 1994-08-23 1997-05-20 Warner-Lambert Company Multi-blade razor head with improved performance
US5579580A (en) * 1995-03-31 1996-12-03 Warner-Lambert Company Bi-directional wire-wrapped blade cartridge
US6839968B2 (en) * 2002-05-09 2005-01-11 The Gillette Company Shaving systems
US6852262B2 (en) * 2002-05-09 2005-02-08 The Gillette Company Insert molding razor cartridges
US20040128835A1 (en) * 2002-10-21 2004-07-08 Eveready Battery Company, Inc. Bidirectional shaving cartridge and razor including same
US8015710B1 (en) * 2004-05-27 2011-09-13 Harley Zyla Shaving device and method of use
US20060218793A1 (en) * 2005-03-31 2006-10-05 Wheel Technology Ltd. Electric razor with helical filament winding
US7681314B2 (en) * 2005-06-10 2010-03-23 Eveready Battery Company Inc. Inter-blade guard and method for manufacturing same
PL2176041T3 (pl) * 2007-04-13 2018-08-31 Edgewell Personal Care Brands, Llc Wielofunkcyjny przyrząd golący
WO2014059646A1 (zh) * 2012-10-18 2014-04-24 Tong Jianlun 可换高效防护刀具
US11045965B2 (en) * 2016-07-28 2021-06-29 Bic Violex S.A. Shaving cartridge including a masking foil

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1035548A (en) * 1911-12-26 1912-08-13 Modoc Dev Company Safety-razor.
US3505734A (en) * 1968-02-28 1970-04-14 Philip Morris Inc Cutting blade with self-contained guard
DE8700107U1 (de) * 1987-01-03 1987-05-07 Wilkinson Sword GmbH, 5650 Solingen Rasierapparat für Nassrasur

Also Published As

Publication number Publication date
HK124094A (en) 1994-11-18
ATE81315T1 (de) 1992-10-15
GR3006092T3 (pt) 1993-06-21
ES2035192T3 (es) 1993-04-16
JP2601660Y2 (ja) 1999-11-29
EP0306710A1 (de) 1989-03-15
KR890003501A (ko) 1989-04-15
JPS6470089A (en) 1989-03-15
BR8804315A (pt) 1989-03-21
DE8711506U1 (de) 1987-10-08
DE3875210D1 (de) 1992-11-12
JPH0999U (ja) 1997-02-25
US5090124A (en) 1992-02-25

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