ALEXANDRIA, Va., July 28 -- United States Patent no. 12,691,973, issued on July 28, was assigned to GUANGDONG LOFANDI INTELLIGENT TECHNOLOGY Co. LTD. (Foshan, China).
"Automatic internal transmission and bicycle" was invented by Jichu Li (Foshan, China) and Jiehuang Lin (Foshan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An automatic internal transmission and a bicycle are provided. The automatic internal transmission includes a hub shaft, an input mechanism, an output mechanism, a transmission mechanism having a first planetary gear train and a second planetary gear train, and an automatic shifting control mechanism having a clutch control unit and a centrifugal block being connected to the output...