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:
Feb. 07, 1989
Filed:
May. 09, 1985
Applicant:
Inventor:
Akira Shibata, Yokohama, JP;
Assignee:
Chugai Denki Kogyo K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F / ; H01H / ;
U.S. Cl.
CPC ...
200268 ; 200262 ; 200265 ; 200266 ;
Abstract
Electrical contacts especially for use with electric breakers, consisting of (1) a base made from a silver-tin system alloy containing In, and (2) a clad over the base made from a silver-cadmium system alloy, the alloys having been internally oxidized. The clad (2) stands by to initial tests provided for electric breakers, and the base (1) stands by to the tests thereafter. The base has no segregation of tin oxides on account of internal oxidation of the base screened by the clad (2).