US Patent Issued to ZF COMMERCIAL VEHICLE SYSTEMS (QINGDAO) on Nov. 11 for "Unloading device and air compressor" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,450, issued on Nov. 11, was assigned to ZF COMMERCIAL VEHICLE SYSTEMS (QINGDAO) Co. LTD. (Qingdao, China).

"Unloading device and air compressor" was invented by Xiucheng Hao (Qingdao, China) and Haiqiang Yuan (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An unloading device is applied to an air compressor including a plurality of cylinders, and includes: a plurality of unloading valves, each unloading valve movably covering an unloading hole of one cylinder; an unloading cavity in communication with the unloading hole; an intake cavity in communication with the unloading cavity; and a piston member connected to the plurality of unlo...