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. 02, 2025
Filed:
May. 31, 2021
Federal-mogul Burscheid Gmbh, Burscheid, DE;
Richard Mittler, Burscheid, DE;
Fabian Ruch, Leverkusen, DE;
FEDERAL-MOGUL BURSCHEID GMBH, Burscheid, DE;
Abstract
An oil scraper ring is provided for pistons () of an internal combustion engine having an oil scraper piston ring groove () formed without at least one oil drain bore. The scraper ring includes a ring body () comprising an upper ring flank (), a lower ring flank (), a ring inner side (), a ring outer side () and two abutting surfaces (). An upper oil scraper rail () and a lower oil scraper rail () extend in the circumferential direction in spaced apart relation from one another in the axial direction and extend radially to the outside from the ring outer side () are arranged on the ring outer side (). Oil passages () running in the radial direction are arranged in a region between the upper scraper rail () and the lower scraper rail (), and at least one groove () extends in the radial direction on the lower ring flank ().