EP0049262B1 - Rasiergerät - Google Patents

Rasiergerät Download PDF

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Publication number
EP0049262B1
EP0049262B1 EP81900987A EP81900987A EP0049262B1 EP 0049262 B1 EP0049262 B1 EP 0049262B1 EP 81900987 A EP81900987 A EP 81900987A EP 81900987 A EP81900987 A EP 81900987A EP 0049262 B1 EP0049262 B1 EP 0049262B1
Authority
EP
European Patent Office
Prior art keywords
bar
instrument according
shaving instrument
cutting edge
teeth
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
EP81900987A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0049262A1 (de
Inventor
Friedrich SCHÄCHTER
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0049262A1 publication Critical patent/EP0049262A1/de
Application granted granted Critical
Publication of EP0049262B1 publication Critical patent/EP0049262B1/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
    • B26B21/40—Details or accessories
    • B26B21/4012—Housing details, e.g. for cartridges
    • B26B21/4018—Guard elements
    • 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
    • B26B21/16—Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge
    • 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
    • B26B21/4012—Housing details, e.g. for cartridges
    • B26B21/4031—Housing details, e.g. for cartridges characterised by special geometric shaving parameters, e.g. blade span or exposure

Definitions

  • the invention relates to a razor according to the preamble of claim 1 as e.g. is known from US-A-3 722 090.
  • the quality of a razor depends crucially on the orientation of the bar with respect to the razor blade edge and on the gap between the bar and the razor blade edge. Furthermore, the function of the shaver is influenced by the nature and the material properties of the web. In the known shaving device, the web and base part are made in one piece from the same material, namely from plastic. However, this one-piece design does not allow the desired physical properties of the web part, e.g. to realize the roughness to tighten the skin in the desired way. In addition, in the known shaving device, the gap which arises between the bridge and the razor blade cutting edge cannot be adapted to the optimal requirements for dissipating the cut hair.
  • the separately manufactured bridge enables an optimal selection of the material.
  • the angled legs provided at the two ends of the web which are either connected to the base part or both to the cover part of the razor without play, permit an exact assignment of the razor blade cutting edge and web.
  • the stops and the freedom from backlash ensure that the distance between the bridge and the razor blade is precisely defined, and thus that the two are aligned exactly parallel to one another.
  • FIG. 1 and 2 show the shaver in side view and in plan view.
  • 3 shows a section along the line 111-111 in FIG. 2
  • FIGS. 4 to 7 phases of the manufacture of the teeth on the bar in section and top view
  • FIGS. 4 and 6 sections along the lines IV-IV in FIG 5 and VI-VI in Fig. 7
  • Fig. 8 is a view of the tool from below
  • Fig. 9 is a detail on a large scale.
  • the device has a blade holder consisting of a base part 1 with a one-piece molded handle 2 and a cover 3 which is denoted overall by 4.
  • the razor blade 5 is firmly clamped between the base part 1 and cover 3 and cannot be replaced.
  • a web 6 is provided as protection and is held by the base part 1.
  • the front sides of the base part 1 and the cover 3 form a breast surface 7 which, together with a sliding surface 8 of the cover 3, forms a breast edge 9.
  • the blade 5 projects over the chest surface 7.
  • the bracket 6 has angled legs 10 at its ends, which are inserted into openings in the base part and held there without play.
  • stops 1 a are provided on the base part 1 and are located near the legs. The web is inserted into the blade holder 4 in such a way that its legs run parallel to the central plane 28 of the blade 5.
  • the web 6 of the example shown is provided with four rows of teeth 12, 13, 14, 15, which are arranged symmetrically to the central plane 11 of the web 6 and the legs 10.
  • the rows do not always have to be arranged symmetrically, and the number of rows of teeth can also differ from four.
  • the rows of teeth 14 and 15 are less important for the shaving action of the device, their arrangement is expedient because the web 6 can thereby be inserted into the openings of the base part 1 without having to pay attention to whether the rows of teeth are actually open the side facing the blade 5.
  • the teeth are formed by embossing and have tooth cutting edges 16, 17, 18, 19 which run parallel to the longitudinal axis of the web.
  • the position of the rows of teeth is such that at least one comes to rest on the surface area of the web 6 facing the blade. This area is delimited by a line 25a with which a tangential plane 24a passing through the blade cutting edge 26 touches the surface of the web 6.
  • An improved embodiment consists in that a further row of teeth is arranged on the web 6 in front of this line of contact.
  • FIGS. 4 to 7 The manufacture of the teeth is illustrated in FIGS. 4 to 7.
  • the web 6 is placed on a base 20 such that the center plane 11 forms an angle of approximately 30 ° with the direction of movement of the tool 21.
  • the tool 21 has punches 22 arranged in two rows, which form a number of symmetrically arranged teeth 13, 15 on the web 6.
  • the web 6 is then pivoted so that its central plane 11 again includes an angle of 30 ° with the direction of movement of the tool, but the inclination is opposite to that during the first stamping process.
  • the web 6 was displaced somewhat axially, so that the teeth 12, 14 generated by the tool are in the gap between the teeth 13, 15 of the previously generated row of teeth.
  • the punches 22 need not be prismatic and also have no end face 23 perpendicular to the direction of movement of the tool 21.
  • the tool shown forms teeth, the cutting edges of which run parallel to the rows of teeth. Each tooth protrudes evenly over the entire length of the web 6.
  • a tangential plane through the chest edge 9 on the web 6 touches it along the line of contact 25.
  • the cutting edge 26 of the blade 5 should have a specific position relative to the tangential plane 24.
  • the cutting edge can protrude up to 0.12 mm beyond the tangential plane 24 or protrude up to 0.03 mm.
  • the sliding surface 8 is present preferably in the tangential plane 24.
  • the cutting edges 16, 17 of the rows of teeth arranged in front of and behind the line of contact 25 should preferably lie in the tangential plane 24.
  • the distance of the web 6 from the blade edge 26 or from the chest surface 7 also plays a role in achieving the object of the invention.
  • Useful results are achieved when the line of contact 25 is between 1.0 and 1.8, for example 1.2 to 1.6 mm from the blade edge.
  • the web 6 had a circular cross section with a diameter of 1.2 to 2.2 mm.
  • the bridge was provided with four rows of teeth arranged symmetrically to the central plane 11.
  • the tooth cutting edges ran parallel to the rows of teeth and these parallel to the longitudinal axis of the web and therefore also to the cutting edge 26 of the blade.
  • the lengths of the tooth cutting edges were varied between 0.3 and 1.0 mm. They each protruded over their entire length over the surface of the web, and this distance was between 0.03 and 0.12 mm.
  • the tooth spaces within a row were approximately 1.0 mm in size.
  • the teeth of adjacent rows stood on gap.
  • the distance between the rows was chosen between 0.5 and 1.5 mm. Particularly favorable effects were achieved with distances between 0.7 and 1.0 mm.
  • the central plane 28 determined from the flanks 27 forming the cutting edge 26 of the razor blade 5 made an angle between 14 and 281 with the tangential plane 24.
  • the web 6 had a diameter of 1.59 ⁇ 0.01 mm and was provided with rows of teeth, the length of which was 36 mm and which consisted of twenty-two teeth.
  • the length of the blade cutting edge was 37 mm and that of the individual tooth cutting edges was 0.5 mm.
  • the teeth were spaced 1.0 mm apart within each row.
  • the distance between the tooth feet 6a, which form recesses in the surface of the bar, was approximately 1 mm between both the teeth 12 and 14 and between the teeth 13 and 15.
  • the four rows of teeth provided were offset by approximately 30 ° on the circumference of the bar and arranged symmetrically to its central plane 11.
  • the tooth cutting edges protruded approximately 0.07 mm from the surface of the bar.
  • the central plane 28 of the blade cutting edge 26 included an angle of 20 ° with the tangential plane 24. By choosing the appropriate manufacturing tolerances, it was achieved that the blade edge 26 only protruded 0.05 to 0.09 mm beyond the tangential plane 24. The cutting edges 16 of the teeth 12 were in the tangential plane 24. The distance between the contact line 25a and the blade cutting edge 26 was 1.4 mm.
  • the base part 1 has near each of the ends of the blade cutting edge 26 a stop 1a for the web 6 and at the same time a stop 1 for the cutting edge 26 of the blade 5.
  • the blade 5 is provided with holes 29 which are aligned with bores in the base part 1 when the blade is in the correct position.
  • the cover part 3 has rivet pins which pass through the holes 29 in the blade.
  • the rivet pins 30 are used for the exact orientation of the blade edge 26.
  • the diameter of the rivet pins is smaller than that of the holes 29 in the blade, but the rivet pins have two opposite ribs 31, which are arranged perpendicular to the direction of the blade cutting edge 26.
  • the cylindrical circumferential surface circumscribing these ribs has a diameter which is approximately 0.01 mm smaller than the diameter of the blade holes 29.
  • the diameter of the bores in the base part 1 can be equal to or up to 0.02 mm smaller than the diameter of the holes 29 .
  • the web legs In order to ensure that the stops 1 are not deformed when the web legs are inserted into the blade holder and that the exact distance between the web and the cutting edge 26 is maintained, the web legs must be easily fitable into the recesses provided in the base part 1 for accommodating them.
  • recesses (not shown in the drawing) are arranged on the blade holder and provided with two wall surfaces spaced apart from one another and running parallel to the center plane 11 of the web, the legs 10 of the web 6 being calibrated perpendicularly to the center plane 11 of the web to a dimension which is approximately 0.02 mm is smaller than the tolerance-tolerated smallest diameter of the legs, and the distance between the two Wall surfaces preferably deviate at most between +0.005 mm and -0.010 mm from the calibration dimension.
  • the invention is not restricted to the exemplary embodiment shown.
  • a wire made of stainless steel was used for the web 6, but other materials, such as e.g. Plastic or the like can be used.
  • the tooth shape and the rows of teeth can vary. Neither the tooth cutting, nor the rows of teeth have to run in a straight line.
  • the cutting edge of the razor blade 5 can be ground on one side, so that one of the flanks 27 coincides with the blade surface, in which the cutting edge 26 then also comes to rest.
  • the cross section of the web 6 can deviate from the circular shape. However, it is expedient to make the surface area that comes into contact with the skin convex.
  • the handle of the device is in one piece with the blade holder or connected to it.
  • the design can also be selected such that the cover is guided on the base part and is pressed against the base part by means of a rotatable handle which has a thread, as a result of which a loosely insertable blade is clamped in the blade holder in a known manner.
  • the device can also be used either to massage the facial skin or, before shaving, to align the whiskers.
  • an injection molding tool for the manufacture of a blade holder which contains the negatives of all the stops - or bores - are arranged in a one-piece part or in a part of the tool consisting of several elements that remain firmly connected to one another even when the tool is opened.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Dry Shavers And Clippers (AREA)
  • Treatment Of Fiber Materials (AREA)
EP81900987A 1980-04-10 1981-04-10 Rasiergerät Expired EP0049262B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1946/80 1980-04-10
AT0194680A AT387744B (de) 1980-04-10 1980-04-10 Rasiergeraet

Publications (2)

Publication Number Publication Date
EP0049262A1 EP0049262A1 (de) 1982-04-14
EP0049262B1 true EP0049262B1 (de) 1984-10-24

Family

ID=3524452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81900987A Expired EP0049262B1 (de) 1980-04-10 1981-04-10 Rasiergerät

Country Status (7)

Country Link
US (1) US4502217A (enrdf_load_stackoverflow)
EP (1) EP0049262B1 (enrdf_load_stackoverflow)
JP (1) JPH0470040B2 (enrdf_load_stackoverflow)
AT (1) AT387744B (enrdf_load_stackoverflow)
DE (2) DE3141810C1 (enrdf_load_stackoverflow)
GB (1) GB2085343B (enrdf_load_stackoverflow)
WO (1) WO1981002864A1 (enrdf_load_stackoverflow)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4813867A (en) * 1985-10-31 1989-03-21 Nihon Nensho System Kabushiki Kaisha Radiant tube burner
USD308427S (en) 1987-07-09 1990-06-05 Bic Corporation Combined razor and blade cover thereof
DE8711505U1 (de) * 1987-08-25 1987-10-08 Wilkinson Sword GmbH, 5650 Solingen Rasierklingeneinheit
US4998347A (en) * 1989-05-08 1991-03-12 Schaechter Friedrich Shaving instrument with high energy beam induced microstretch element
US5343622A (en) * 1993-02-22 1994-09-06 Andrews Edward A Bi-directional razor device
US5590468A (en) * 1993-04-16 1997-01-07 American Safety Razor Company Movable blade shaving cartridge with conditioning bar
US5689883A (en) * 1995-05-08 1997-11-25 Warner-Lambert Company Shaving implement
EP0761393B1 (en) * 1995-07-26 2003-02-26 Friedrich SCHÄCHTER Device for conditioning hairy skin before shaving
US6167625B1 (en) 1999-05-18 2001-01-02 Warner-Lambert Company Shaving implement
EP1252985B1 (en) * 2001-04-27 2005-10-19 Eveready Battery Company, Inc. Wet shaving device with guard/transfer roller and replaceable shaving aid
US20050028389A1 (en) * 2001-06-12 2005-02-10 Wort Christopher John Howard Cvd diamond cutting insert
WO2005056251A1 (en) * 2003-12-10 2005-06-23 Koninklijke Philips Electronics N.V. Shaving head with skin stretching member
JP2007515190A (ja) * 2003-12-12 2007-06-14 ビック−ヴァイオレックス ソシエテ アノニム 保護バーを備えたウェットシェービング装置の、改良された製造方法
CN101879723B (zh) * 2010-07-12 2012-01-11 任向荣 剃须刀刀头
RU2572641C1 (ru) * 2012-11-16 2016-01-20 Сянжун ЖЭНЬ Головка бритвы и бритва с такой головкой
JP5966104B1 (ja) * 2013-05-30 2016-08-10 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 毛刈込み装置用の静止切断ブレード
CN105538355B (zh) * 2015-12-22 2017-08-15 任向荣 具有修剪功能的剃须刀头
US12030199B1 (en) * 2024-01-05 2024-07-09 Jianwu Xie Pet shaver

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US875130A (en) * 1907-10-08 1907-12-31 Philip K Stern Safety-razor.
US999130A (en) * 1910-10-06 1911-07-25 Jesse G Steenson Washing-machine.
US2349252A (en) * 1943-08-18 1944-05-23 Edward R Douglass Combined knife and razor
US2572367A (en) * 1946-03-11 1951-10-23 William L Mills Safety razor
US2591280A (en) * 1949-10-29 1952-04-01 Gillette Safety Razor Co Safety razor
US3040430A (en) * 1959-01-29 1962-06-26 Randolph Harry Beckham Safety razor having a vibration damping blade mounting member
GB1274771A (en) * 1969-03-26 1972-05-17 Gillette Industries Ltd Improvements in safety razors and blades therefor
US3722090A (en) * 1971-08-12 1973-03-27 Warner Lambert Co Guard bar for safety razors
DE7338696U (enrdf_load_stackoverflow) * 1972-10-27 1974-02-14 Wilkinson Sword Ltd
GB1444545A (en) * 1972-10-27 1976-08-04 Wilkinson Sword Ltd Shaving apparatus
US3871073A (en) * 1972-11-17 1975-03-18 Gillette Co Shaving system with a fixed edge between the blade edge and the guard

Also Published As

Publication number Publication date
WO1981002864A1 (en) 1981-10-15
ATA194680A (de) 1988-08-15
GB2085343A (en) 1982-04-28
JPH0470040B2 (enrdf_load_stackoverflow) 1992-11-09
DE3141810D2 (en) 1982-05-19
JPS57500415A (enrdf_load_stackoverflow) 1982-03-11
DE3141810C1 (de) 1991-04-18
EP0049262A1 (de) 1982-04-14
AT387744B (de) 1989-03-10
GB2085343B (en) 1983-09-07
US4502217A (en) 1985-03-05

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