US Patent Issued to Kubota on Sept. 15 for "Hydraulic system for work machine, and work machine" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. RE51,031, issued on Sept. 15, was assigned to Kubota Corp. (Osaka, Japan).

"Hydraulic system for work machine, and work machine" was invented by Yuji Fukuda (Sakai, Japan) and Kazuyoshi Arii (Sakai, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic system for a work machine includes a hydraulic pump to supply a pilot fluid, and a hydraulic switch valve to be switched to a plurality of switching positions based on a pilot pressure. The pilot pressure is a pressure of the pilot fluid supplied from the hydraulic pump. The hydraulic system includes a direction switch valve to apply a first pilot pressure to the hydraulic switch valve to switch ...