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:
Mar. 17, 2015
Filed:
Jan. 09, 2012
Peter-klaus Esser, Kuerten, DE;
Peter-Klaus Esser, Kuerten, DE;
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Abstract
A piston ring, in particular a compression piston ring, includes a main body, which has a radially outer running surface, a radially inner circumferential surface, an upper and a lower flank surface, and a joint, wherein the running surface is provided with at least one circumferential recess which receives a wear-resistant coating, in particular a PVD coating, and wherein, starting from respective end faces of the joint, as seen in the circumferential direction of the main body, a land shoulder is integrally formed on the main body outside the coating and extends at a predetermined radial height over a predetermined circumferential length on both sides of the joint.