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. 08, 2023
Filed:
May. 28, 2019
Federal-mogul Burscheid Gmbh, Burscheid, DE;
Florian Böhnke, Leverkusen, DE;
Richard Mittler, Burscheid, DE;
Thomas Bastuck, Düsseldorf, DE;
Dirk Bärenreuter, Odenthal, DE;
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Abstract
A three-part oil scraper ring includes an upper scraper ring (), a lower scraper ring (), wherein the scraper rings () are held at a distance by an expander spring () and pressed radially outwards. The upper scraper ring () has a ring body () having an upper flank (), a lower flank (), a ring inner surface () and a ring outer surface () which has a ring outer contour () in cross-section in axial direction (A). The ring body () has a height H which, when viewed in axial direction (A), corresponds to the greatest distance of the upper flank () from the lower flank (). The ring outer contour () forms a running surface () which has a radius of curvature R which is smaller than the height H of the upper scraper ring () by a factor between 1.5 to 6.