ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,120, issued on Sept. 30, was assigned to FANUC Corp. (Yamanashi, Japan).
"Waterproof structure and robot" was invented by Kenta Itokazu (Yamanashi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A waterproof structure including an extension shaft disposed at an upper side of a vertically extending ball screw spline shaft so as to be coaxial with the ball screw spline shaft, a cylindrical cover member that covers the extension shaft and the ball screw spline shaft and is configured to be extended and shortened in a direction along a longitudinal axis of the extension shaft, and a rotary connection unit that connects the ball screw spline shaft...