Metal tools and implements – making – Blank or process – Cutlery
Patent
1997-03-27
1998-09-01
Watts, Douglas D.
Metal tools and implements, making
Blank or process
Cutlery
3034654, 76DIG8, B26B 2130
Patent
active
057995494
ABSTRACT:
Improved razors and razor blades and processes for producing razor blades or similar cutting tools with sharp and durable cutting edges, by hard-carbon coating of blades with amorphous diamond, preferably using a filtered cathodic arc plasma source. A coating of amorphous diamond having at least 40 percent sp3 carbon bonding, a hardness of at least 45 gigapascals and a modulus of at least 400 gigapascals is applied to the sharpened edge of a substrate. The substrate may be mechanically honed, and there is no interlayer between the substrate and the amorphous diamond coating. The coating imparts stiffness and rigidity to a thin blade while maintaining a high aspect ratio.
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Decker Thomas G.
Lundie Gregory P.
Pappas David L.
Parent C. Robert
Welty Richard P.
The Gillette Company
Watts Douglas D.
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