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. 11, 2015
Filed:
Nov. 24, 2011
Applicants:
Marcus Kennedy, Düsseldorf, DE;
Michael Zinnabold, Burscheid, DE;
Inventors:
Marcus Kennedy, Düsseldorf, DE;
Michael Zinnabold, Burscheid, DE;
Assignee:
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C23C 16/26 (2006.01); F16J 9/26 (2006.01); C23C 14/06 (2006.01); C23C 28/00 (2006.01);
U.S. Cl.
CPC ...
F16J 9/26 (2013.01); C23C 14/0605 (2013.01); C23C 16/26 (2013.01); C23C 28/30 (2013.01); C23C 28/343 (2013.01); Y10T 428/2495 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01); Y10T 428/30 (2015.01);
Abstract
The invention relates to a sliding element, such as a piston ring, comprising a coating on at least one surface comprising, form inside to outside, a bonding layer, a metal DLC layer preferably containing tungsten, and a metal-free DLC layer doped with nitrogen at least in some regions, wherein said sliding element is characterized in that the nitrogen content in the metal-free DLC layer is graduated.