US Patent Issued to NSK on Feb. 17 for "Rolling device" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,471, issued on Feb. 17, was assigned to NSK LTD. (Tokyo).

"Rolling device" was invented by Toshikazu Yabe (Kanagawa, Japan), Keisuke Yokoyama (Kanagawa, Japan), Shintaro Honda (Kanagawa, Japan) and Nariaki Aihara (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A linear motion device includes a linear motion body that is fitted onto a screw shaft and moves straight along the screw shaft, a large number of balls held in a ball groove formed on an inner surface side of the linear motion body and rolling between the ball groove and the screw shaft, a separator interposed between each ball, a circulation passage formed in the linear motio...