ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,759, issued on March 3, was assigned to Kubota Corp. (Osaka, Japan).
"Hydraulic system for working machine" was invented by Yuji Fukuda (Sakai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic system for a working machine includes a prime mover, a boom cylinder, a control valve, a first hydraulic pump to deliver pilot fluid to switch the control valve, a second hydraulic pump to deliver hydraulic fluid to activate the boom cylinder, a hydraulic controller configured or programmed to control the second hydraulic pump to set a load-sensing (LS) differential pressure, a first pilot fluid passage, a second pilot fluid passage branching o...