US Patent Issued to Federal-Mogul Powertrain on March 17 for "Coated piston ring for an internal combustion engine" (Wisconsin Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,016, issued on March 17, was assigned to Federal-Mogul Powertrain LLC (Northville, Mich.).

"Coated piston ring for an internal combustion engine" was invented by Daniel J. Dufek (Mishicot, Wis.) and Marc Irrgeher (Manitowoc, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coated piston ring for a piston is provided. The piston ring includes a running surface, a flank surface, and a transition surface therebetween. The transition surface curves or extends at an angle between the running surface and the flank surface. A running layer is disposed over the running surface and over at least a portion of the transition surface. A flank layer is dis...