The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 1981
Filed:
Nov. 09, 1979
William A Kilinskas, Amherst, NY (US);
Ronald J Selines, Yorktown Heights, NY (US);
Jaak S Vand den Sype, Scarsdale, NY (US);
Union Carbide Corporation, New York, NY (US);
Abstract
A method for making a fastener having a head and a shank from wire or rod consisting essentially of AISI 200 or 300 series stainless steel comprising the following steps: (a) cooling the wire or rod to a temperature of less than about minus 75.degree. C.; (b) drawing the cold wire or rod through a die at a strain sufficient to provide a tensile strength for the wire or rod in the range of about 75 ksi to about 160 ksi, the strain and the die size being such that the area of the wire or rod will be reduced by at least about 3 percent; and (c) dividing the wire or rod into slugs and cold heading each slug to provide the fastener.