ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,858, issued on Dec. 30, was assigned to KOBELCO CONSTRUCTION MACHINERY Co. LTD. (Hiroshima, Japan).
"Work machine" was invented by Yuki Miyoshi (Hiroshima, Japan), Koji Ueda (Hiroshima, Japan) and Kosuke Yanagibashi (Hiroshima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A work machine capable of preventing cavitation more effectively. The work machine includes a work device, a variable displacement hydraulic pump, a hydraulic actuator, a posture detector, a control valve, an operation unit, an operation detector, and a controller. The controller judges whether or not a work operation detected by the operation detector is a low-pressure ope...