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:
Jul. 28, 2020
Filed:
Mar. 29, 2017
Applicants:
Mahle Metal Leve S/a, Jundiai, BR;
Mahle International Gmbh, Stuttgart, DE;
Inventor:
Paulo Jose Da Rocha Mordente, Jundiai, BR;
Assignees:
Mahle Metal Level S/A, , BR;
Mahle International GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 9/26 (2006.01); F16J 9/12 (2006.01); C23C 14/50 (2006.01); C23C 14/54 (2006.01);
U.S. Cl.
CPC ...
F16J 9/12 (2013.01); C23C 14/505 (2013.01); C23C 14/542 (2013.01); F16J 9/26 (2013.01);
Abstract
A piston ring may include a drawn metal base of constant thickness having an outer peripheral surface. The piston ring may also include a hard coating disposed on the outer peripheral surface. The coating may have a thickness that is greater in a region of two butt ends of the base than a thickness of the coating in another region of the outer peripheral surface. The coating may be defined by a plurality of layers with a nanoscale structure.