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:
Aug. 17, 2021
Filed:
Nov. 28, 2016
Federal-mogul Burscheid Gmbh, Burscheid, DE;
Stephan Machliner, Leverkusen, DE;
Fabian Ruch, Leverkusen, DE;
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Abstract
A three-piece piston oil control ringhas an upper, disc-shaped scraping ring, a lower, disc-shaped stabilising ring, and a circular expanderwhich has projectionsprotruding in the axial direction on an inner face. The circular expanderis arranged between the upper scraping ringand the lower stabilising ring, wherein the projectionseach bear inwardly against an inner faceof the scraping ringor against an inner faceof the stabilising ring. An outer radiusof the scraping ringis greater than an outer radiusof the lower stabilising ring, so that there is a radius difference δ between the scraping ringand the stabilising ring