ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,733, issued on Aug. 4, was assigned to ZF Commercial Vehicle Systems (Qingdao) Co. Ltd. (Qingdao, China).
"Crankcase air valve structure and air compressor" was invented by Xiucheng Hao (Qingdao City, China) and Haiqiang Yuan (Qingdao City, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A crankcase air valve structure comprises an air intake valve and a valve seat plate which are sequentially mounted on an end surface of a crankcase. The valve seat plate is provided with at least one group of air intake holes. The air intake valve has at least one valve plate, the valve plate having root portions located at two ends thereof and lug portions loc...