ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,897, issued on Dec. 2, was assigned to FEDERAL-MOGUL BURSCHEID GMBH (Burscheid, Germany).

"Oil scraper ring for pistons of an internal combustion engine" was invented by Richard Mittler (Burscheid, Germany) and Fabian Ruch (Leverkusen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "An oil scraper ring is provided for pistons (2) of an internal combustion engine having an oil scraper piston ring groove (4) formed without at least one oil drain bore. The scraper ring includes a ring body (6) comprising an upper ring flank (8), a lower ring flank (10), a ring inner side (12), a ring outer side (14) and two abutting surfaces (16, 18). An upper oi...