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:
Dec. 18, 1979
Filed:
Dec. 11, 1978
Keith G Wikle, Riverview Park, PA (US);
Kawecki Berylco Industries, Inc., Boyertown, PA (US);
Abstract
Copper-based alloys containing minor amounts of beryllium, cobalt and/or nickel, and zirconium are subjected to treatment comprising, in sequence: annealing followed by quenching; cold working; a second optional annealing followed again by quenching; a cold working; an initial age hardening treatment; a secondary age hardening treatment; if necessary, straightening the alloy; and stress relieving the straightened alloy. Optimum elevated temperature properties are developed in alloys treated according to the present invention and articles made of the treated alloys are useful under conditions involving high operating speed and elevated temperature.