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:
May. 20, 2025
Filed:
Mar. 14, 2022
Applicant:
Federal-mogul Burscheid Gmbh, Burscheid, DE;
Inventors:
Döndü Karabel, Burscheid, DE;
Jörn Pröpper, Leverkusen, DE;
Assignee:
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 9/20 (2006.01);
U.S. Cl.
CPC ...
F16J 9/20 (2013.01);
Abstract
A piston ring includes a ring outer side, an upper ring flank and a lower ring flank, whereby the ring outer side has a pressure relief chamfer at an upper edge, so that only a lower part of the ring outer side forms a contact surface. An axial dimension of the contact surface varies in the circumferential direction.