ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,746,997, issued on Sept. 29, was assigned to UNIQUE PRODUCT & DESIGN Co. LTD. (Tainan City, Taiwan).
"Pedaling sensing device of electric bicycle" was invented by Chih-Ching Cheng (Tainan City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pedaling sensing device of an electric bicycle is configured to connect to a motor and includes a crank axle, a first gearwheel, a second gearwheel, an assisting unit and a sensing unit. The crank axle extends along an axial direction and has a plurality of first helical teeth connected to each other and arranged continuously. The first gearwheel is disposed around the crank axle and comprises a first inner...