ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,785,501, issued on Nov. 3, was assigned to Zhuhai Geelly Technology Co. LTD. (Zhuhai, China).

"Ball or roller group arrangement for annular motor" was invented by Shaowu Zhu (Zhuhai, China), Dongzhu Zhu (Zhuhai, China) and Shuang Shi (Zhuhai, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "This application relates to an annular motor, which includes a circular ring-shaped inner ring, a circular ring-shaped outer ring, and a junction box. The inner ring is sleeved in the outer ring, and at least one ball group or at least one roller group is installed between the inner ring and the outer ring. One of a coil winding set and even numbers of permanent m...