ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,298, issued on March 3, was assigned to KANZAKI KOKYUKOKI MFG. Co. LTD. (Amagasaki, Japan).
"Reduction and reversing gear unit" was invented by Tomoyuki Ebihara (Amagasaki, Japan) and Shigeaki Nakagawa (Amagasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "[Problem] In a reduction and reversing gear unit in which hydraulic oil is supplied to a generator motor or the like as cooling oil by a hydraulic pump driven by an electric motor, which is separate from the generator motor, a problem of a noise generated by fully driving the hydraulic pump and the electric motor at all time is solved by assuming a high hydraulic oil temperature when a m...