ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,471,537, issued on Nov. 18, was assigned to Deere & Co. (Moline, Ill.).
"Hydraulic motor control system and method" was invented by Steven D. Wallestad (Ankeny, Iowa), Mark A. Cracraft (Johnston, Iowa) and James T. Noonan (Bondurant, Iowa).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electrohydraulic system for a work machine includes a pump, a motor fluidly coupled to the pump, a subassembly driven by the motor, and a rate-control valve fluidly coupled to the pump and the motor. The rate-control valve is movable through a range of positions. A present speed of the motor is proportional to a present position of the rate-control valve. The present po...