ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,421, issued on Oct. 14, was assigned to JTEKT Corp. (Kariya, Japan).
"Constant-speed universal joint" was invented by Koji Kubo (Kariya, Japan), Yuya Kudo (Handa, Japan), Masahito Ikeo (Anjo, Japan), Yoshitaka Shinoda (Nagakute, Japan) and Susumu Abe (Toyota, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A constant-velocity universal joint includes: an outer ring; an inner ring; a plurality of balls that engages with the outer-ring ball grooves and the inner-ring ball, grooves; and a holder that is interposed between an inner spherical surface of the outer ring and an outer spherical surface of the inner ring and in which a holding window for...