ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,098, issued on May 27, was assigned to Kawasaki Jukogyo K.K. (Kobe, Japan).
"Hydraulic pump performance deterioration detection system" was invented by Akihiro Kondo (Kobe, Japan), Yousuke Kataoka (Kobe, Japan) and Jun Umekawa (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic pump performance deterioration detection system according to one embodiment includes: a hydraulic pump that is driven by a prime mover and that supplies a hydraulic liquid to a hydraulic actuator to move the hydraulic actuator; a switching valve located on a passage through which the hydraulic liquid delivered from the hydraulic pump flows, the switching v...