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US 6,571,665 B2Granted
Cutting instruments
AssigneeNitinol Technologies, Inc.
InventorGerald J. Julien
Life of this patent
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AssigneeNitinol Technologies, Inc.
InventorGerald J. Julien
Estimating the term…
A process for making a cutting instrument includes cutting a blank from a plate or strip of Type 60 Nitinol, having a thickness of between 0.005″-0.500″ using an abrasive waterjet, wire electron discharge machining or laser cutting, and grinding top and bottom surfaces of the blank by rotating a grinder having cubic boron nitride or diamond abrasive particles on a cutting surface of said grinder against the knife blank at a surface speed of about 5000 to 7000 surface feet per minute and grinding to a depth of about 0.001 to 0.005 inches per pass to remove material along the blade surface. The surface of the blade is polished to a surface finish smoother than 20 microinches RMS using Turkish emery abrasive grinding/polishing materials on a buffing wheel driven by a high power motor. The blade is then finish polished to a mirror-like luster of 2 microinches RMS or less using a fine diamond buffing compound and a buffing wheel running at about 3000 RPM. An edge is ground into the polished blade blank using an Arkansas stone grinder.
A process for producing surface material on a part made of Type 60 Nitinol parent material, said surface material being electrically non-conductive hard lustrous, non-stick and integral with the parent material, said surface material having a color from a group of colors consisting of gold, red/purple, blue, silver, and green, said process comprising:
A-process for producing a hard, non-stick, chemically inert and electrically non-conductive surface material on a Type 60 Nitinol part, comprising:
A process for producing surface material on a part made of Type 60 Nitinol parent material, said surface material being electrically non-conductive, hard lustrous, non-stick and integral with the parent material, said surface material having a color from a group of colors consisting of gold, red/purple, blue, silver, and green, said process comprising:
Dependencies are inferred from the claim text.