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. 29, 2002
Filed:
Oct. 29, 1999
Applicant:
Inventors:
John F. Breedis, Trumbull, CT (US);
Ronald N. Caron, Branford, CT (US);
Carl L. Deppisch, Hamden, CT (US);
Assignee:
Olin Corporation, East Alton, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 9/02 ;
U.S. Cl.
CPC ...
C22C 9/02 ;
Abstract
An alpha brass (copper/zinc alloy with less than 39%, by weight, of zinc) stock alloy has controlled additions of nickel, tin and phosphorous. The combination of nickel and tin increase resistance of the alloy to elevated temperature stress relaxation. As a result, spring contacts formed from alloys of the invention maintain a higher percentage of initially imposed stress at elevated temperatures, in the range of 125° C. to 150° C., for significantly longer times than other brass alloys of comparable strength.