ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,825, issued on March 31, was assigned to VITAMIN I FACTORY Co. LTD. (Tokyo).
"Training bicycle and bicycle frame" was invented by Mikio Watanabe (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pedal unit attachable/detachable training bicycle that easily attach/detach a chain and a pedal unit to/from a training bicycle that has a seat stay. The pedal unit attachable/detachable training bicycle includes a bicycle frame having a receiving member provided at bottom of a seat tube to connect a pedal unit. The pedal unit, which is configured to detachably attach to the receiving member. A chain threaded between the pedal unit and a rear wheel. T...