ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,362, issued on Sept. 30, was assigned to OHFG TECHNOLOGIES(SHANGHAI) Co. LTD. (Shanghai).
"Weight-adjustable barbell, and method for adjusting weight of barbell" was invented by Ping Liu (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a weight-adjustable barbell, and a method for adjusting the weight of the barbell. Cam mechanisms on two sides of a barbell rod assembly have hitching parts and avoidance parts at different angles. The cam mechanisms at different positions are provided with the avoidance parts at different angles. When transmission shafts on two sides rotate at different angles, different numbers of weight plates...