ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,824, issued on Sept. 9, was assigned to T-MAX (HANGZHOU) TECHNOLOGY Co. LTD. (Zhejiang, China).
"Hydraulic oil-circuit system and hydraulic jack" was invented by Yongyong Zhan (Zhejiang, China), Xinfa Du (Zhejiang, China), Songfeng Wang (Zhejiang, China) and Binhao Ruan (Zhejiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic oil-circuit system and a hydraulic jack are proposed. The hydraulic oil-circuit system includes a hydraulic cylinder, an oil loading chamber, a storage oil chamber and an oil unloading pipeline; a piston is arranged in the hydraulic cylinder and divides the hydraulic cylinder into a first hydraulic oil chamb...