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:
Jun. 06, 2017
Filed:
Sep. 24, 2013
Applicant:
Federal-mogul Burscheid Gmbh, Burscheid, DE;
Inventors:
Richard Mittler, Burscheid, DE;
Frank Nathem, Mering, DE;
Assignee:
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 9/20 (2006.01);
U.S. Cl.
CPC ...
F16J 9/20 (2013.01);
Abstract
A piston ring having an outer running face, two flanks and an inner circumferential face is provided, the running face of which has profiling with a groove. The groove is arranged between two running face sections in relation to the cross section of the piston ring. The two running face sections are spaced apart from each other and substantially convexly curved and each have an apex. The groove has a periodically varying depth and a periodically varying width, and the number of periods of the course of the depth and the number of periods of the course of the width are equal.