ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,837, issued on Aug. 26, was assigned to QINGDAO HUATIAN HAND TRUCK Co. LTD. (Qingdao, China).
"Dump truck" was invented by Zhijun Liu (Qingdao, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dump truck is provided, which includes a vehicle frame and a vehicle body hinged on the vehicle frame, a front wheel installation shaft and a rear wheel installation shaft respectively arranged on front and rear ends of the vehicle frame, and wheels installed on the front wheel installation shaft and the rear wheel installation shaft, a connecting plate fixedly installed below a rear end of the vehicle body, and a body rotation shaft fixed below the conn...