CA2317235A1 - Amorphous diamond coating of blades - Google Patents

Amorphous diamond coating of blades Download PDF

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Publication number
CA2317235A1
CA2317235A1 CA002317235A CA2317235A CA2317235A1 CA 2317235 A1 CA2317235 A1 CA 2317235A1 CA 002317235 A CA002317235 A CA 002317235A CA 2317235 A CA2317235 A CA 2317235A CA 2317235 A1 CA2317235 A1 CA 2317235A1
Authority
CA
Canada
Prior art keywords
substrate
amorphous diamond
sharpened edge
blades
less
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.)
Granted
Application number
CA002317235A
Other languages
French (fr)
Other versions
CA2317235C (en
Inventor
Thomas G. Decker
Gregory P. Lundie
David L. Pappas
Richard P. Welty
C. Robert Parent
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
The Gillette Company
Thomas G. Decker
Gregory P. Lundie
David L. Pappas
Richard P. Welty
C. Robert Parent
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 The Gillette Company, Thomas G. Decker, Gregory P. Lundie, David L. Pappas, Richard P. Welty, C. Robert Parent filed Critical The Gillette Company
Priority claimed from CA002188022A external-priority patent/CA2188022C/en
Publication of CA2317235A1 publication Critical patent/CA2317235A1/en
Application granted granted Critical
Publication of CA2317235C publication Critical patent/CA2317235C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The invention provides improved razors and razor blades and processes for producing razor blades or similar cutting tools with sharp and durable cutting edges.
One such process comprises the steps of providing a substrate, forming a wedge-shaped sharpened edge on the substrate and depositing a layer of amorphous diamond material as a coating on the sharpened edge. The sharpened edge has an included angle of less than thirty degrees and a tip radius of less than 1,200 angstroms. As part of the depositing step an initial high bias is applied to the substrate and then a second lower bias is applied to the substrate. The amorphous diamond coating imparts stiffness and rigidity to a thin blade while maintaining a high aspect ratio.
CA002317235A 1994-04-25 1995-04-21 Amorphous diamond coating of blades Expired - Fee Related CA2317235C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US23292894A 1994-04-25 1994-04-25
US232,928 1994-04-25
CA002188022A CA2188022C (en) 1994-04-25 1995-04-21 Amorphous diamond coating of blades

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002188022A Division CA2188022C (en) 1994-04-25 1995-04-21 Amorphous diamond coating of blades

Publications (2)

Publication Number Publication Date
CA2317235A1 true CA2317235A1 (en) 1995-11-02
CA2317235C CA2317235C (en) 2002-03-26

Family

ID=25678740

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002317234A Expired - Fee Related CA2317234C (en) 1994-04-25 1995-04-21 Amorphous diamond coating of blades
CA002317235A Expired - Fee Related CA2317235C (en) 1994-04-25 1995-04-21 Amorphous diamond coating of blades

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002317234A Expired - Fee Related CA2317234C (en) 1994-04-25 1995-04-21 Amorphous diamond coating of blades

Country Status (1)

Country Link
CA (2) CA2317234C (en)

Also Published As

Publication number Publication date
CA2317235C (en) 2002-03-26
CA2317234C (en) 2002-03-26
CA2317234A1 (en) 1995-11-02

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MKLA Lapsed

Effective date: 20140422