ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,162, issued on Jan. 27, was assigned to ZF Commercial Vehicle Systems (Qingdao) Co. Ltd (Qingdao, China).
"Quick-plug connection connector and leveling valve" was invented by Qing Yang (Ji'nan, China), Qiao Ding (Shanghai) and Juan Zhu (Ji'nan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A quick-plug connection connector includes: a locking member arranged at a tail end of a connector body and a release ring partially extending into the connector body so as to come into contact with the locking member. An annular receiving groove is formed in the release ring and a sealing ring is received in the annular receiving groove. As the release rin...