ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,480, issued on Aug. 12, was assigned to KIND SHOCK HI-TECH Co. LTD. (Tainan, Taiwan).
"Adjustable pneumatic-hydraulic pressure unit for stroke control" was invented by Jung-Yu Hsu (Tainan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An adjustable pneumatic-hydraulic pressure unit for stroke control including a cylinder and an actuating tube, an oil seal valve seat, a piston valve seat, and a plurality of pistons to form a plurality of oil chambers and a plurality of oil passages; whereby a piston is used to close to block or to open to conduct the oil passages, causing the oil-gas filled passages to form an internal pressure, which control...