US Patent Issued to NTN on Sept. 2 for "Fluid dynamic bearing, fluid dynamic bearing device, and motor" (Japanese Inventor)

ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,896, issued on Sept. 2, was assigned to NTN Corp. (Osaka, Japan).

"Fluid dynamic bearing, fluid dynamic bearing device, and motor" was invented by Masashi Yamagou (Mie, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fluid dynamic bearing (bearing sleeve 8) includes a first dynamic pressure generating part 11 and a second dynamic pressure generating part 12 that are provided in an inner peripheral surface 8a so as to be spaced apart from each other in an axial direction. The respective dynamic pressure generating parts 11 and 12 have a plurality of dynamic pressure generating grooves 11a, 11b, 12a, and 12b arranged in a herringbone shape and ...