ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,664, issued on Aug. 12, was assigned to TADANO LTD. (Kagawa, Japan).
"Controller, boom device, and truck crane" was invented by Daiki Karashima (Kagawa, Japan) and Satoshi Tanii (Kagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A controller calculates a theoretical payout length X1(Theta) of a wire in a posture in which a hook block is raised, a theoretical payout length X2(Theta) of the wire in a posture in which the hook block is lying, dX1(Theta)/dt, and dX2(Theta)/dt, using a length L of the boom, A and B (first specified values) indicating coordinates of a hook hardware, a length K (second specified value) being a sum of a length of...