DE69230822D1 - RAZOR BLADE - Google Patents

RAZOR BLADE

Info

Publication number
DE69230822D1
DE69230822D1 DE69230822T DE69230822T DE69230822D1 DE 69230822 D1 DE69230822 D1 DE 69230822D1 DE 69230822 T DE69230822 T DE 69230822T DE 69230822 T DE69230822 T DE 69230822T DE 69230822 D1 DE69230822 D1 DE 69230822D1
Authority
DE
Germany
Prior art keywords
wedge
angstroms
less
razor blade
interlayer
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
DE69230822T
Other languages
German (de)
Other versions
DE69230822T2 (en
Inventor
S Grewel
P Chou
S Hahn
John Madeira
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
Priority claimed from US07/759,812 external-priority patent/US5142785A/en
Application filed by Gillette Co LLC filed Critical Gillette Co LLC
Publication of DE69230822D1 publication Critical patent/DE69230822D1/en
Application granted granted Critical
Publication of DE69230822T2 publication Critical patent/DE69230822T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B26B21/54—Razor-blades
    • B26B21/58—Razor-blades characterised by the material
    • B26B21/60—Razor-blades characterised by the material by the coating material

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physical Vapour Deposition (AREA)
  • Dry Shavers And Clippers (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Chemical Vapour Deposition (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

The razor blade comprises a substrate on which is formed a wedge shaped sharpened edge. The wedge has an an included angle of less than thirty degrees and a tip radius of less than 1200 angstroms. An interlayer of material, chosen from the group of molybdenum, nickel, niobium, silicon, silicon carbide, tantalum, vanadium and their alloys, is deposited on the wedge in a thickness less than 500 angstroms. A layer of diamond or diamond like carbon is deposited on the interlayer. This final layer has a thickness of at least 1200 angstroms on the wedge flanks to a tip radius of 40 microns.
DE69230822T 1991-04-26 1992-04-22 RAZOR BLADE Expired - Lifetime DE69230822T2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US69201091A 1991-04-26 1991-04-26
US07/759,812 US5142785A (en) 1991-04-26 1991-08-26 Razor technology
US83525192A 1992-02-13 1992-02-13
PCT/US1992/003330 WO1992019425A2 (en) 1991-04-26 1992-04-22 Improvements in or relating to razor blades

Publications (2)

Publication Number Publication Date
DE69230822D1 true DE69230822D1 (en) 2000-04-27
DE69230822T2 DE69230822T2 (en) 2000-12-07

Family

ID=27418553

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69230822T Expired - Lifetime DE69230822T2 (en) 1991-04-26 1992-04-22 RAZOR BLADE

Country Status (18)

Country Link
EP (1) EP0582676B1 (en)
JP (1) JP3439761B2 (en)
KR (1) KR100241239B1 (en)
CN (1) CN1039527C (en)
AT (1) ATE190892T1 (en)
AU (1) AU666659B2 (en)
CA (1) CA2102222C (en)
CZ (1) CZ288085B6 (en)
DE (1) DE69230822T2 (en)
EG (1) EG19582A (en)
ES (1) ES2143473T3 (en)
HU (1) HUT69255A (en)
MX (1) MX9201910A (en)
MY (1) MY107736A (en)
RU (1) RU2108234C1 (en)
TR (1) TR26981A (en)
TW (1) TW221976B (en)
WO (1) WO1992019425A2 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL170815B1 (en) * 1991-06-24 1997-01-31 Gillette Co Method of making a safety-razor blade and safety-razor blade as such
CZ293994B6 (en) * 1994-04-25 2004-09-15 The Gillette Company Razor blade, process for its manufacture and shaving unit
DE69610576T2 (en) * 1995-05-19 2001-05-31 Matsushita Electric Works Ltd Electric shaver cutting unit
JP3555844B2 (en) 1999-04-09 2004-08-18 三宅 正二郎 Sliding member and manufacturing method thereof
JP5212416B2 (en) * 2000-02-25 2013-06-19 住友電気工業株式会社 Amorphous carbon coated member
US6684513B1 (en) 2000-02-29 2004-02-03 The Gillette Company Razor blade technology
US6969198B2 (en) 2002-11-06 2005-11-29 Nissan Motor Co., Ltd. Low-friction sliding mechanism
JP4863152B2 (en) 2003-07-31 2012-01-25 日産自動車株式会社 gear
WO2005014761A2 (en) 2003-08-06 2005-02-17 Nissan Motor Co., Ltd. Low-friction sliding mechanism, low-friction agent composition and method of friction reduction
JP4973971B2 (en) 2003-08-08 2012-07-11 日産自動車株式会社 Sliding member
US7771821B2 (en) 2003-08-21 2010-08-10 Nissan Motor Co., Ltd. Low-friction sliding member and low-friction sliding mechanism using same
EP1508611B1 (en) 2003-08-22 2019-04-17 Nissan Motor Co., Ltd. Transmission comprising low-friction sliding members and transmission oil therefor
US7673541B2 (en) 2004-06-03 2010-03-09 The Gillette Company Colored razor blades
US7284461B2 (en) * 2004-12-16 2007-10-23 The Gillette Company Colored razor blades
TWI410507B (en) * 2005-12-23 2013-10-01 Hon Hai Prec Ind Co Ltd Magnetic wear resistance film and method for fabricating the same
US8011104B2 (en) 2006-04-10 2011-09-06 The Gillette Company Cutting members for shaving razors
US7966909B2 (en) * 2007-07-25 2011-06-28 The Gillette Company Process of forming a razor blade
US20130014395A1 (en) * 2011-07-14 2013-01-17 Ashok Bakul Patel Razor blades having a large tip radius
US20130031794A1 (en) 2011-08-05 2013-02-07 Duff Jr Ronald Richard RAZOR BLADES WITH ALUMINUM MAGNESIUM BORIDE (AlMgB14)-BASED COATINGS
US9808944B2 (en) * 2014-06-17 2017-11-07 The Gillette Company Llc Methods of manufacturing silicon blades for shaving razors
WO2016015771A1 (en) * 2014-07-31 2016-02-04 Bic-Violex Sa Razor blade coating
MX2017008324A (en) 2014-12-22 2017-10-24 Bic Violex Sa Razor blade.
EP3616800B1 (en) * 2018-08-31 2022-11-09 BIC Violex Single Member S.A. Thinning of razor blade coatings
WO2021211812A1 (en) * 2020-04-16 2021-10-21 The Gillette Company Llc Multi-layer coatings for a razor blade
CN112157817B (en) * 2020-06-05 2022-04-05 新蔚来智能科技(山东)有限公司 Assembly type building prefabricated component production line foaming concrete blending system
WO2022092544A1 (en) * 2020-10-27 2022-05-05 주식회사 도루코 Asymmetrical shaving blade

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480483A (en) * 1965-05-06 1969-11-25 Wilkinson Sword Ltd Razor blades and methods of manufacture thereof
US3349488A (en) * 1966-08-09 1967-10-31 Burnie J Craig Razor blades
US3829969A (en) * 1969-07-28 1974-08-20 Gillette Co Cutting tool with alloy coated sharpened edge
US3802078A (en) * 1971-06-07 1974-04-09 P Denes Cutting device and method for making same
US3761374A (en) * 1971-07-09 1973-09-25 Gillette Co Process for producing an improved cutting tool
US4291463A (en) * 1979-12-31 1981-09-29 Warner-Lambert Company Water-soluble shaving aid for razor blades
DE3047888A1 (en) * 1980-12-19 1982-07-15 Philips Patentverwaltung Gmbh, 2000 Hamburg Cutting tools, esp. razor blades - where CVD activated by plasma is used to coat tool with carbon possessing structure similar to diamond
US4933058A (en) * 1986-01-23 1990-06-12 The Gillette Company Formation of hard coatings on cutting edges
JP2580692B2 (en) * 1988-03-28 1997-02-12 三菱マテリアル株式会社 Artificial diamond-coated gold and gold alloy ornaments

Also Published As

Publication number Publication date
CA2102222A1 (en) 1992-10-27
ES2143473T3 (en) 2000-05-16
EP0582676B1 (en) 2000-03-22
CA2102222C (en) 1998-08-25
HUT69255A (en) 1995-08-28
EP0582676A4 (en) 1994-07-06
WO1992019425A2 (en) 1992-11-12
TR26981A (en) 1994-09-12
JP3439761B2 (en) 2003-08-25
MY107736A (en) 1996-05-30
EG19582A (en) 1999-05-31
AU2184292A (en) 1992-12-21
MX9201910A (en) 1992-11-01
EP0582676A1 (en) 1994-02-16
CZ227593A3 (en) 1994-03-16
CN1068058A (en) 1993-01-20
CN1039527C (en) 1998-08-19
TW221976B (en) 1994-04-01
WO1992019425A3 (en) 1993-01-21
DE69230822T2 (en) 2000-12-07
CZ288085B6 (en) 2001-04-11
KR100241239B1 (en) 2000-03-02
RU2108234C1 (en) 1998-04-10
AU666659B2 (en) 1996-02-22
ATE190892T1 (en) 2000-04-15
JPH06507100A (en) 1994-08-11

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