US Patent Issued to Caterpillar on June 3 for "Calibration system and calibration method in hydraulic system" (Japanese Inventors)

ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,372, issued on June 3, was assigned to Caterpillar SARL (Geneva).

"Calibration system and calibration method in hydraulic system" was invented by Hideki Nakajima (Akashi, Japan) and Koichi Kiyasu (Akashi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Problem: Calibrating a correspondence relationship between a pump control current value and a pump flow rate of the hydraulic pump in a hydraulic system including a variable capacity hydraulic pump whose capacity is variably controlled according to the pump control current value, a flow rate control valve whose opening area is variably controlled according to a valve control current value, and a p...