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WO1992019425A3 - Improvements in or relating to razor blades - Google Patents

Improvements in or relating to razor blades Download PDF

Info

Publication number
WO1992019425A3
WO1992019425A3 PCT/US1992/003330 US9203330W WO9219425A3 WO 1992019425 A3 WO1992019425 A3 WO 1992019425A3 US 9203330 W US9203330 W US 9203330W WO 9219425 A3 WO9219425 A3 WO 9219425A3
Authority
WO
WIPO (PCT)
Prior art keywords
wedge
angstroms
less
interlayer
diamond
Prior art date
Application number
PCT/US1992/003330
Other languages
French (fr)
Other versions
WO1992019425A2 (en
Inventor
Manohar S Grewel
Chong-Ping P Chou
Steve S Hahn
John Madeira
Original Assignee
Gillette Co
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
Priority to AU21842/92A priority Critical patent/AU666659B2/en
Priority to JP51189992A priority patent/JP3439761B2/en
Priority to KR1019930703244A priority patent/KR100241239B1/en
Priority to RU93057879A priority patent/RU2108234C1/en
Priority to PL92301145A priority patent/PL170959B1/en
Application filed by Gillette Co filed Critical Gillette Co
Priority to CZ19932275A priority patent/CZ288085B6/en
Priority to AT92913377T priority patent/ATE190892T1/en
Priority to EP92913377A priority patent/EP0582676B1/en
Priority to DE69230822T priority patent/DE69230822T2/en
Publication of WO1992019425A2 publication Critical patent/WO1992019425A2/en
Publication of WO1992019425A3 publication Critical patent/WO1992019425A3/en

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)
  • Dry Shavers And Clippers (AREA)
  • Physical Vapour Deposition (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.
PCT/US1992/003330 1991-04-26 1992-04-22 Improvements in or relating to razor blades WO1992019425A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE69230822T DE69230822T2 (en) 1991-04-26 1992-04-22 RAZOR BLADE
JP51189992A JP3439761B2 (en) 1991-04-26 1992-04-22 Razor blade improvements
KR1019930703244A KR100241239B1 (en) 1991-04-26 1992-04-22 Improvements in or about razor blades
RU93057879A RU2108234C1 (en) 1991-04-26 1992-04-22 Method of manufacture of razor blade, razor blade and shaving-set
PL92301145A PL170959B1 (en) 1991-04-26 1992-04-22 Method of making a safety-razor blade and safety-razor blade obtained thereby
AU21842/92A AU666659B2 (en) 1991-04-26 1992-04-22 Improvements in or relating to razor blades
CZ19932275A CZ288085B6 (en) 1991-04-26 1992-04-22 Razor blade, shaving unit and process for forming such razor blade
AT92913377T ATE190892T1 (en) 1991-04-26 1992-04-22 RAZOR BLADE
EP92913377A EP0582676B1 (en) 1991-04-26 1992-04-22 Improvements in or relating to razor blades

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US69201091A 1991-04-26 1991-04-26
US692,010 1991-04-26
US759,812 1991-08-26
US07/759,812 US5142785A (en) 1991-04-26 1991-08-26 Razor technology
US83525192A 1992-02-13 1992-02-13
US835,251 1999-08-27

Publications (2)

Publication Number Publication Date
WO1992019425A2 WO1992019425A2 (en) 1992-11-12
WO1992019425A3 true WO1992019425A3 (en) 1993-01-21

Family

ID=27418553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/003330 WO1992019425A2 (en) 1991-04-26 1992-04-22 Improvements in or relating to razor blades

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
DK0591339T3 (en) * 1991-06-24 1999-02-15 Gillette Co Razor blade and method of making a razor blade
ES2214498T3 (en) * 1994-04-25 2004-09-16 The Gillette Company PROCEDURE TO COVER BLADES WITH AN AMORFO DIAMOND COAT.
EP0743144B1 (en) * 1995-05-19 2000-10-11 Matsushita Electric Works, Ltd. Cutter combination for an electric shaver
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
KR20060039932A (en) 2003-08-06 2006-05-09 닛산 지도우샤 가부시키가이샤 Low friction sliding mechanism, low friction composition and friction reducing method
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
CN107107362B (en) 2014-12-22 2020-08-04 比克-维尔莱克 Razor blade
EP3616800B1 (en) * 2018-08-31 2022-11-09 BIC Violex Single Member S.A. Thinning of razor blade coatings
CA3173782A1 (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
EP4238727A4 (en) * 2020-10-27 2024-10-16 Dorco Co., Ltd. Asymmetrical shaving blade

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349488A (en) * 1966-08-09 1967-10-31 Burnie J Craig Razor blades
US3480483A (en) * 1965-05-06 1969-11-25 Wilkinson Sword Ltd Razor blades and methods of manufacture thereof
US3761374A (en) * 1971-07-09 1973-09-25 Gillette Co Process for producing an improved cutting tool
US3802078A (en) * 1971-06-07 1974-04-09 P Denes Cutting device and method for making same
US4291463A (en) * 1979-12-31 1981-09-29 Warner-Lambert Company Water-soluble shaving aid for razor blades

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829969A (en) * 1969-07-28 1974-08-20 Gillette Co Cutting tool with alloy coated sharpened edge
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

Patent Citations (5)

* 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
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

Also Published As

Publication number Publication date
TW221976B (en) 1994-04-01
CN1068058A (en) 1993-01-20
MX9201910A (en) 1992-11-01
JP3439761B2 (en) 2003-08-25
WO1992019425A2 (en) 1992-11-12
EP0582676A4 (en) 1994-07-06
EP0582676A1 (en) 1994-02-16
CA2102222A1 (en) 1992-10-27
KR100241239B1 (en) 2000-03-02
TR26981A (en) 1994-09-12
DE69230822D1 (en) 2000-04-27
MY107736A (en) 1996-05-30
DE69230822T2 (en) 2000-12-07
ES2143473T3 (en) 2000-05-16
CZ227593A3 (en) 1994-03-16
AU2184292A (en) 1992-12-21
AU666659B2 (en) 1996-02-22
HUT69255A (en) 1995-08-28
ATE190892T1 (en) 2000-04-15
RU2108234C1 (en) 1998-04-10
CZ288085B6 (en) 2001-04-11
EG19582A (en) 1999-05-31
JPH06507100A (en) 1994-08-11
CA2102222C (en) 1998-08-25
EP0582676B1 (en) 2000-03-22
CN1039527C (en) 1998-08-19

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