US Patent Issued to Federal-Mogul Burscheid on Oct. 14 for "Piston ring with hard chromium layer and improved running-in behaviour" (German Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,100, issued on Oct. 14, was assigned to Federal-Mogul Burscheid GmbH (Burscheid, Germany).

"Piston ring with hard chromium layer and improved running-in behaviour" was invented by Peter Schmidt (Burscheid, Germany), Sabine Balke (Burscheid, Germany) and Stefan Lueer (Langenfeld, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A piston ring includes a base body having an inner circumferential surface, first and second flank surfaces and an outer circumferential surface, wherein a first hard chromium layer with a crack network is applied to the outer circumferential surface and has a crack density of 10-250 cracks per mm and solid particles hav...