ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,081, issued on May 6, was assigned to NSK LTD. (Tokyo).
"Ball bearing" was invented by Hironori Suzuki (Fujisawa, Japan) and Takuya Oyama (Fujisawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ball bearing includes an inner ring, an outer ring, a plurality of balls rollably disposed between an inner ring raceway surface of the inner ring and the outer ring raceway surface of the outer ring, and a cage in which pockets rollably holding the balls are formed at intervals in a circumferential direction. An inclination angle of a cylindrical surface of each of the pockets is set more than 0deg and less than a contact angle of the ball bearing,...