ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,253, issued on Jan. 13, was assigned to NIPPON THOMPSON Co. LTD. (Tokyo).
"Linear motion guide unit" was invented by Tamotsu Iwata (Mino, Japan) and Hideyuki Fujii (Mino, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A linear motion guide unit includes a rail, a slider, and a plurality of balls. The slider includes a coil spring arranged in a first circulation passage so as to extend in a longitudinal direction. The coil spring includes a pair of first regions provided at both ends in the longitudinal direction and fitted in the first circulation passage, and a second region smaller in diameter than the pair of first regions and positioned be...