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:
Aug. 14, 1990
Filed:
Nov. 17, 1989
Applicant:
Inventors:
Wolfgang Haufe, Hessdorf, DE;
Bernard Rothkegel, deceased, late of Nuremberg, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22L / ;
U.S. Cl.
CPC ...
75234 ; 252514 ; 419 21 ; 419 22 ;
Abstract
Sinter contact materials produced from an intraoxidized alloy powder having the constitution AgSnO.sub.2 Bi.sub.2 O.sub.3 CuO have added thereto at least zirconium oxide and optionally additionally bismuth oxide in parts by weight of preferably between 0.1 and 5%. For the production of these materials, zirconium oxide power and optionally additionally bismuth oxide powder is added to the intraoxidized alloy powder AgSnO.sub.2 Bi.sub.2 O.sub.3 CuO. With such a contact material, the excess temperature behavior in motor contactors is improved.