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. 26, 2019
Filed:
Dec. 20, 2016
Applicants:
Mahle Metal Leve S/a, Jundiai, BR;
Mahle International Gmbh, Stuttgart, DE;
Inventors:
Juliano Avelar Araujo, Jundiai, BR;
Eliel Dos Santos Paes, Jundiai, BR;
Assignees:
Mahle Metal Leve S/A, , BR;
Mahle International GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 32/00 (2017.01); F02B 77/02 (2006.01); F16J 9/26 (2006.01); F02F 3/10 (2006.01); F02F 5/00 (2006.01);
U.S. Cl.
CPC ...
F02B 77/02 (2013.01); F02F 3/10 (2013.01); F02F 5/00 (2013.01); F16J 9/26 (2013.01);
Abstract
A sliding element, for example a piston ring for an internal combustion engine, may include a sliding face, an adhesive layer disposed on the sliding face, and a coating disposed over the adhesive layer. The coating may be composed of an amorphous carbon material. The coating may have a ratio between spbonds and spbonds that indicates a predominance of spbonds. The coating may have a roughness profile including a value of Rpk of ≤0.15 μm and a value of Rz of 0.7≤Rz≤1.5 μm.