ALEXANDRIA, Va., May 19 -- United States Patent no. 12,631,211, issued on May 19, was assigned to NIPPON THOMPSON Co. LTD. (Tokyo).

"Bearing" was invented by Satoshi Sasaki (Mino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bearing includes: a plurality of cylindrical rollers arranged in a circumferential direction; and a separator adjacent to the cylindrical rollers in the circumferential direction. The separator has a cylindrical shape. An outer peripheral surface of the separator has an annular groove defined by a groove wall surface, a shape of the groove wall surface in a cross section including a center axis being an arc shape. The separator is oriented such that the groove wall surface cont...