EP0416233B1 - Rasierapparatekopf eines Nassrasierapparates - Google Patents

Rasierapparatekopf eines Nassrasierapparates Download PDF

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Publication number
EP0416233B1
EP0416233B1 EP90112442A EP90112442A EP0416233B1 EP 0416233 B1 EP0416233 B1 EP 0416233B1 EP 90112442 A EP90112442 A EP 90112442A EP 90112442 A EP90112442 A EP 90112442A EP 0416233 B1 EP0416233 B1 EP 0416233B1
Authority
EP
European Patent Office
Prior art keywords
razor
blade
blade block
razor head
head 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.)
Expired - Lifetime
Application number
EP90112442A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0416233A1 (de
Inventor
Wolfgang Althaus
Michael Schwarz
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 AT90112442T priority Critical patent/ATE96075T1/de
Publication of EP0416233A1 publication Critical patent/EP0416233A1/de
Application granted granted Critical
Publication of EP0416233B1 publication Critical patent/EP0416233B1/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
    • B26B21/08—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 a razor head of a wet shaver arranged at the front end of a handle, with a body having a front guide bar and with a blade block in which a razor blade in the form of a single or double razor blade with a cutting edge parallel to the guide bar and with a top razor blade covering cap is arranged and is mounted such that it can pivot freely against a spring force with respect to the rest of the body of the razor head, which body has the guide strip, about a pivot axis parallel to the cutting edge (s), the pivot axis being behind the cutting edge (s) extends and the blade block is seen from the top in the area between the pivot axis and the guide bar down in the body.
  • Such a shaver head for a wet shaver is known for example from US-A 4,461,079.
  • This publication discloses a razor head arranged at the front end of a handle in the form of a so-called razor blade unit of a wet razor.
  • This razor blade unit initially consists of a plastic body having a front guide bar.
  • Four forward tongues are formed on this in such a way via a type of film hinge that the film hinges can be pivoted of the tongues.
  • These tongues define a part of a blade block, in which a double razor blade is mounted on the tongues with the interposition of a spacer, a cover cap of the blade block being attached and riveted to the lower tongues for fixing the double razor blade.
  • the connection of the blade block via the film hinges to the ordinary plastic body of the razor head is disadvantageous for two reasons.
  • the blade block is pivoted based on the elastic behavior of the film hinges, so that precise guidance is not provided.
  • the force is determined solely by the elastic deformability of the plastic material in the area of the film hinges. It is extremely difficult in the known razor head to inject the film hinges so thinly that on the one hand the low contact forces necessary for shaving and on the other hand the mechanical strengths necessary for assembly are achieved.
  • the pivot axis lies below the lower blade level.
  • the object of the invention is to further develop the razor head of a wet shaver of the type specified at the outset in such a way that the pivotable mounting of the blade block for changing the shaving angle and thus the cutting geometry is improved.
  • the invention proposes that the blade block is pivotally mounted as a component separate from the body in the side walls of the body and that the pivot axis runs through the cover cap.
  • a razor head of a wet shaver designed according to this technical teaching has the advantage that the pivoting mounting of the blade block within the body of the razor head is decisively improved.
  • the blade block is designed as a separate component to the ordinary body of the razor head and is pivotally mounted in the side walls of the body, a spring being supported to achieve the spring restoring force between the body and the blade block.
  • the pivoting geometry is precisely defined by this pivot axis and by the required pivoting force due to the defined spring. The precise guidance and the precisely defined spring continue to allow the swivel device to be correctly adjusted.
  • the pivot axis of the blade block runs through the cover cap and thus lies above the upper blade and the blade block is thus suspended in a somewhat pendulous manner in the rest of the body of the razor head, optimal lever ratios can be achieved in this way, that this arrangement ensures that during the shaving the swing-out razor blades make a small movement in the shaving direction and thus prevent the razor blades from swinging into the skin.
  • the razor blades can thus never take a position on the skin that leads to cutting injuries.
  • the pivot axis preferably runs essentially in the area below the apex of the cover cap.
  • the blade block preferably has lateral pins which define the pivot axis and which can be latched into corresponding recesses in the side walls of the body and are pivotably mounted therein.
  • the blade block In a development of the blade block, it has lateral wings which, with their lateral outer surfaces together with the corresponding inner surfaces of the side walls of the body, define guide surfaces for the pivoting movement. This ensures a perfect pivoting movement of the blade block with respect to the rest of the body of the razor head.
  • stops are preferably provided between the blade block and the body, which limit the movement of the blade block into predetermined, defined positions.
  • the stops are preferably formed between the side wings of the blade block and the side walls of the body.
  • the shaver head is preferably provided with a friction-reducing sliding strip, in particular based on water-soluble or non-water-soluble polymers.
  • the reduction in friction has the advantage that the shaving properties of the razor head are improved.
  • the razor head according to the invention with a pivotable blade block can be used on any type of wet razor.
  • the razor blades can be exchangeable.
  • the razor head is formed by a razor blade unit made of plastic, in which the razor blade (s) is (are) embedded in the blade block made of plastic.
  • a razor blade unit 1 consists of a body 2 made of plastic. This body 2 has a side wall 3 at each of the two ends. Furthermore, a guide bar 4 is provided, which is connected in one piece to the actual body 2 via webs 5. This guide bar 4 extends in the longitudinal direction of the razor blade unit 1.
  • the razor blade unit 1 is moreover intended to be arranged at the front end of a handle of a wet shaving apparatus, not shown, the fastening device to be provided for this purpose on the body 2 of the razor blade unit 1 not being shown.
  • the razor blade unit 1 has a blade block 6 also made of plastic.
  • razor blades 7 are embedded in the form of a double razor blade, the cutting edges 8 of which run parallel to the guide bar 4.
  • the razor blades 7 are covered on the top by a cover cap 9 of the blade block 6.
  • the blade block 6 has a wing 10, which is received by a corresponding recess in the respective side wall 3 of the body 2.
  • the blade block 6 with its embedded razor blades 7 can be pivoted about a pivot axis A parallel to the cutting edges 8 within the body 2.
  • the pivot axis A lies in the region of the apex 5 of the cover cap 9.
  • the two wings 10 of the blade block 6 each have outwardly directed pins 11 which define the pivot axis A.
  • the inner sides of the side wall 3 of the body 2 each have recesses 12.
  • a spring 14 in the form of a helical spring is arranged between the body 2 and the blade block 6, which tries to turn the blade block 6 counterclockwise in FIG. 3 and thus the razor blades 7 into the position shown in FIG. 3 position shown pivoted outwards.
  • the basic position is limited by the abutment of the upper arm 15 of the blade block 6 on the upper side of the body 2.
  • the razor blade unit 1 described works as follows:
  • the basic position can be seen in particular in FIG. 3.
  • the spring 14 presses the blade block 6 forward into the position shown. This results in a very specific shaving geometry with a very specific shaving angle.
  • the razor blade unit 1 comes into contact with the skin of the user, the user naturally exerting a certain pressure on the razor blade unit 1.
  • the blade block 6 with its embedded razor blades 7 is pivoted in the direction of arrow P against the force of the spring 14, the pivoting angle depending on the magnitude of the force exerted.
  • the shaving angle is relatively large, while after pivoting the blade block 6 it is relatively small, so that an overall adjustment of the shaving angle to the respective needs is possible.
  • the outer sides of the wings 10 of the blade block 6 form, with the inner sides of the side walls 3 of the body 2, plane-parallel guide surfaces 16. Furthermore, between the body 2 and the blade block 6 are in the area of the side walls 3 and the wing 10 stops 17 are formed, which limit the pivoting angle of the blade block 6 with respect to the body 2.
  • the razor blade unit 1 has the advantage that the entire blade block 6 can be pivoted by a certain angle with respect to the guide bar 4 and thus the shaving geometry can be changed with the razor angle, so that the overall shaving properties of the razor blade unit 1 are improved.
  • the pivot axis A lies in the region of the apex S of the cover cap 9. This is a purely exemplary arrangement of the pivot axis A, so that it can also assume a different position within the body 2 as required.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP90112442A 1989-09-02 1990-06-29 Rasierapparatekopf eines Nassrasierapparates Expired - Lifetime EP0416233B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90112442T ATE96075T1 (de) 1989-09-02 1990-06-29 Rasierapparatekopf eines nassrasierapparates.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8910490U DE8910490U1 (de) 1989-09-02 1989-09-02 Rasierapparatekopf eines Naßrasierapparates
DE8910490U 1989-09-02

Publications (2)

Publication Number Publication Date
EP0416233A1 EP0416233A1 (de) 1991-03-13
EP0416233B1 true EP0416233B1 (de) 1993-10-20

Family

ID=6842505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112442A Expired - Lifetime EP0416233B1 (de) 1989-09-02 1990-06-29 Rasierapparatekopf eines Nassrasierapparates

Country Status (7)

Country Link
US (1) US5074042A (da)
EP (1) EP0416233B1 (da)
AT (1) ATE96075T1 (da)
DE (2) DE8910490U1 (da)
DK (1) DK0416233T3 (da)
ES (1) ES2047211T3 (da)
HK (1) HK64894A (da)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9108214U1 (de) * 1991-07-03 1992-10-29 Wilkinson Sword GmbH, 5650 Solingen Rasierapparatekopf, insbesondere Rasierklingeneinheit eines Naßrasierapparates
DE9108212U1 (de) * 1991-07-03 1992-10-29 Wilkinson Sword GmbH, 5650 Solingen Rasierapparatekopf, insbesondere Rasierklingeneinheit eines Naßrasierapparates
AU5551994A (en) * 1992-11-09 1994-06-08 Warner-Lambert Company Insert molded dynamic shaving system
US5341571A (en) * 1993-04-16 1994-08-30 American Safety Razor Company Movable blade shaving cartridge or the like
US5590468A (en) * 1993-04-16 1997-01-07 American Safety Razor Company Movable blade shaving cartridge with conditioning bar
US5402574A (en) * 1994-05-20 1995-04-04 Milner; Joshua P. Shaving apparatus
US5666729A (en) * 1995-04-10 1997-09-16 Warner-Lambert Company Suspended blade shaving system
US5787586A (en) * 1996-04-10 1998-08-04 The Gillette Company Shaving system and method
US20040020053A1 (en) * 2000-10-16 2004-02-05 The Gillette Company Safety razors
ATE433840T1 (de) * 2002-01-30 2009-07-15 Eveready Battery Inc Rasierklingeneinheit
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
JP4950506B2 (ja) * 2006-02-14 2012-06-13 株式会社貝印刃物開発センター 剃刀
JP4950507B2 (ja) * 2006-02-14 2012-06-13 株式会社貝印刃物開発センター 剃刀
JP4977374B2 (ja) * 2006-02-14 2012-07-18 株式会社貝印刃物開発センター 剃刀
US9283685B2 (en) * 2012-07-26 2016-03-15 Shavelogic, Inc. Pivoting razors
WO2014051842A1 (en) 2012-09-27 2014-04-03 Shavelogic, Inc. Shaving systems
US9486930B2 (en) * 2012-09-27 2016-11-08 Shavelogic, Inc. Shaving systems
WO2014051843A1 (en) 2012-09-28 2014-04-03 Shavelogic, Inc. Shaving systems
US9623575B2 (en) 2012-12-18 2017-04-18 Shavelogic, Inc. Shaving systems
WO2014110031A1 (en) * 2013-01-08 2014-07-17 The Hone Razor Company LLC Razor and razor treatment system
US20150158192A1 (en) 2013-12-09 2015-06-11 Shavelogic, Inc. Multi-material pivot return for shaving systems
US11325270B2 (en) 2014-03-21 2022-05-10 Sl Ip Company Llc Metal spring return and method
US11235483B2 (en) 2017-02-17 2022-02-01 Leaf Shave Company Trimmer razor
USD970814S1 (en) 2020-03-24 2022-11-22 Leaf Shave Company Trimmer razor

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593416A (en) * 1968-10-10 1971-07-20 Roger C Edson Safety razor
GB1470386A (en) * 1973-05-15 1977-04-14 Wilkinson Sword Ltd Shaving units
GB1487305A (en) * 1973-09-20 1977-09-28 Gillette Co Safety razor
US4026016A (en) * 1975-05-12 1977-05-31 The Gillette Company Razor blade assembly
CA1140321A (en) * 1979-05-25 1983-02-01 John F. Francis Safety razor heads
EP0045879B1 (en) * 1980-08-07 1984-11-07 The Gillette Company Razor blade assembly
US4442598A (en) * 1981-01-30 1984-04-17 The Gillette Company Razor blade assembly
CA1213428A (en) * 1981-05-19 1986-11-04 Angus J. Mcgready Razors and shaving units for razors
IT8209403A1 (it) * 1981-05-19 1983-11-14 Wilkinson Sword Ltd Complesso di rasatura con lama spostabile fra due posizioni
US4461079A (en) * 1982-06-01 1984-07-24 Warner-Lambert Company Method and apparatus for changing the shaving attitude of a blade package
US4574476A (en) * 1982-09-27 1986-03-11 Warner-Lambert Company Razor blade assembly
US4774765A (en) * 1986-09-02 1988-10-04 Warner-Lambert Company Blade assembly featuring variable span
US4709477A (en) * 1986-09-02 1987-12-01 Warner-Lambert Company Blade assembly featuring variable span
US4693003A (en) * 1986-09-15 1987-09-15 Warner Lambert Company Pivotable razor cartridge with circular cam
US4813131A (en) * 1987-11-16 1989-03-21 The Gillette Company Retractable blade safety razor
US4777722A (en) * 1987-12-14 1988-10-18 The Gillette Company Combination overcover for safety razor

Also Published As

Publication number Publication date
HK64894A (en) 1994-07-15
ES2047211T3 (es) 1994-02-16
EP0416233A1 (de) 1991-03-13
DE8910490U1 (de) 1991-01-10
DE59003136D1 (de) 1993-11-25
DK0416233T3 (da) 1994-03-07
US5074042A (en) 1991-12-24
ATE96075T1 (de) 1993-11-15

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