US Patent Issued to NTN on July 28 for "Tripod type constant velocity universal joint" (Japanese Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,904, issued on July 28, was assigned to NTN Corp. (Osaka, Japan).

"Tripod type constant velocity universal joint" was invented by Taku Itagaki (Shizuoka, Japan), Shota Kawata (Shizuoka, Japan) and Tatsuro Sugiyama (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a tripod type constant velocity universal joint 1 of a double roller type, R/PCDless than=0.0850 and t/PCDless than=0.145, where PCD is a pitch circle diameter of a roller guide surface 6 of an outer joint member 2, R is a radius of curvature at an intermediate portion between a body portion 31 and a leg shaft 32 of a tripod member 3, and t is a minimum distance from a larg...