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:
Feb. 14, 2023
Filed:
Mar. 18, 2019
Applicant:
Federal-mogul Burscheid Gmbh, Burscheid, DE;
Inventors:
Assignee:
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16J 9/20 (2006.01);
U.S. Cl.
CPC ...
F16J 9/20 (2013.01);
Abstract
A piston ring with improved wear properties has a running surface, an upper ring flank, a lower ring flank, and an inner surface. The piston ring has a radius R, and wherein in a radial section, a running surface contour includes an upper region, a central region, and a lower region. The upper region of the running surface contour has a curvature radius R, which lies between the ring radius R and infinity. The central region of the running surface contour has a curvature radius R, which lies between the ring radius R and infinity. The lower region has a curvature radius R, which is smaller than the ring radius R.