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. 31, 1982
Filed:
Apr. 30, 1980
Applicant:
Inventor:
Paul Vossieck, Burscheid, DE;
Assignee:
Goetze AG, Burscheid, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
1231 / ; 2915 / ;
Abstract
A sintered valve seat ring having excellent resistance to wear, to corrosion and to thermal stresses, and a method for its production. The ring comprises a supporting portion made up of an iron or steel alloy and a facing portion, subject to wear, of a cobalt and/or nickel alloy. The supporting portion comprises up to 30% by weight of the alloy of the facing portion.