ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,449, issued on Nov. 11, was assigned to JINGDONG TECHNOLOGY INFORMATION TECHNOLOGY Co. LTD. (Beijing).
"Track travelling device" was invented by Chuanbiao Wu (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a track travelling device, comprising a vehicle body, a connection device and two groups of wheels. The two groups of wheels are disposed on two sides of the vehicle body respectively and the wheels comprise rims matched with tracks. One end of the connection device is connected to a bottom of the vehicle body and the other end of the connection device is connected to the wheels. The connection device comp...