ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,071, issued on Sept. 30, was assigned to Caterpillar SARL (Geneva).
"Pilot pressure control device" was invented by Hideki Nakajima (Akashi, Japan) and Toshikazu Koga (Akashi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a pilot pressure control device capable of securing a pilot pressure with an inexpensive configuration. There is equipped with a controller configured, when a pump pressure drops to a predetermined pressure or below resulting from the drive of a fluid pressure actuator, to control so as to throttle an opening of a spool that is the cause of the drop in the pump pressure. The pump pressure can be maintained with a...