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:
Dec. 22, 2015
Filed:
Sep. 09, 2010
Richard Mittler, Leverkusen, DE;
Thomas Schulte-sasse, Wermelskirchen, DE;
Manfred Muller, Burscheid, DE;
Richard Mittler, Leverkusen, DE;
Thomas Schulte-Sasse, Wermelskirchen, DE;
Manfred Muller, Burscheid, DE;
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Abstract
A multi-part piston ring, containing an at least single-part spring support which is provided with a piston ring joint region and an at least single-part spring element, which is positioned in a groove provided in the region of the inner circumferential face of the spring support, wherein the wall thickness of the spring support is essentially equal in the region of the ends of the spring support facing the piston ring joint and in the rear region of the spring support, and a pocket which extends over a circumferential range of at least 60° and is created by local reduction of the wall thickness of the spring support is provided in each case between the rear region and the piston ring joint ends.