ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,834, issued on Dec. 23, was assigned to Caterpillar SARL (Geneva).
"Relief set-pressure adjustment system" was invented by Hideki Nakajima (Akashi, Japan) and Shino Sako (Akashi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Problem: In a hydraulic system in which a manual line relief valve that adjusts the relief setting pressure is arranged in the line relief oil path formed by branching from the actuator line from the control valve to the hydraulic actuator, the relief setting pressure adjustment operation of the line relief valve can be performed independently with good accuracy. Solution: A controller 20 for controlling a perform of a re...