ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,073, issued on Dec. 23, was assigned to FEDERAL-MOGUL BURSCHEID GMBH (Burscheid, Germany).
"Oil scraper ring and piston ring set for an internal combustion engine" was invented by Nigel Gray (Leverkusen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An oil scraper ring (4) includes a ring element (6), having an upper ring edge (8), a lower ring edge, a ring inner side and a ring outer side (14. The ring element (6) is provided with two opposing contact surfaces (20), between which there is a ring gap (18. The ring element (6) is provided with at least one scraper bar (24, 26) on the ring outer side (14. The oil scraper ring (4) is provided ...