ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,741, issued on Nov. 3, was assigned to HITACHI-JOHNSON CONTROLS AIR CONDITIONING INC. (Tokyo).

"Scroll compressor with a sealing ring for a fixed disk check valve" was invented by Allen Feng (Tokyo), Jason Peng (Tokyo) and Ben Ma (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compressor including a casing, a fixed scroll, an orbiting scroll, a fixed disk check valve, and a sealing ring. The casing includes a first cavity and a mounting seat. The first mounting slot has a slot base which has a first opening that communicates with an outlet port and a slot mouth that communicates with the first cavity. The valve body has a first end and a seco...