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:
Nov. 25, 2025
Filed:
Apr. 25, 2023
Applicant:
Wieland-werke Ag, Ulm, DE;
Inventors:
Assignee:
WIELAND-WERKE AG, Ulm, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 9/04 (2006.01); F16C 33/12 (2006.01);
U.S. Cl.
CPC ...
C22C 9/04 (2013.01); F16C 33/121 (2013.01); F16C 2204/14 (2013.01); F16C 2360/24 (2013.01);
Abstract
A wrought alloy for a bearing material for use as valve guide or in turbochargers of internal-combustion engines operated with ethanol-containing fuels. The composition of the wrought alloy is as follows in wt %: Zn: 25.0-34.0%; Fe: 0.8-1.2%; Sn: 0.8-1.2%; Al: 1.3-1.7%; Si: 0.2-0.45%; and Pb: up to 0.1%, with the balance being copper and unavoidable impurities. The sum total of all elements not belonging to the group of the elements copper, zinc, iron, tin, aluminum and silicon is at most 0.3 wt %. The alloy has a microstructure including precipitates in the form of silicides with a fraction of 0.5 to 2.0 vol %.