ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,832, issued on Nov. 25.
"Frame type leg lift machine" was invented by Yu-Lun Tsai (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A frame type leg lift machine includes a main frame unit, two drive levers, two pedals, and at least one linkage mechanism. The main frame unit includes a bottom frame, an upper support frame, two first stands, two second stands, and a handle rack. The first stands and the second stands are connected between the bottom frame and the upper support frame. The handle rack is connected with the upper support frame. The upper end of each of the drive levers is pivotally mounted on one of the second stands. Eac...