ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,881, issued on July 29, was assigned to Hitachi Construction Machinery Co. Ltd. (Tokyo).
"Work machine" was invented by Teruki Igarashi (Tsuchiura, Japan), Hiroaki Tanaka (Tsuchiura, Japan), Ryohei Fukuchi (Tsuchiura, Japan) and Yusuke Suzuki (Tsuchiura, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A work machine includes a flow control valve that controls the flow rate of a hydraulic operating fluid supplied from a hydraulic pump to a hydraulic cylinder, a solenoid valve that generates an operation pressure for operating the flow control valve, and a controller. The controller executes learning processing of changing in a stepwise manner th...