ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,859, issued on June 24, was assigned to STT Inc. (Kanagawa, Japan) and NTN Corp. (Osaka, Japan).
"Rolling bearing" was invented by Shinichi Takizawa (Kanagawa, Japan), Hitoshi Nakamura (Kanagawa, Japan), Hayato Kawaguchi (Shizuoka, Japan) and Toshiki Masuda (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rolling bearing 1 includes an inner ring 2 and an outer ring 3 that are raceway rings, and a plurality of balls 4 interposed between the inner ring and the outer ring. The outer ring 3 is fitted to a housing 10. The rolling bearing 1 includes a surface coating film 8 on an outer ring outer diametrical surface 3a that is a fitting s...