ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,467, issued on May 5, was assigned to Kawasaki Jukogyo K.K. (Kobe, Japan).
"Hydraulic system" was invented by Ryo Yamamoto (Kobe, Japan), Hideki Tanaka (Kobe, Japan) and Hiroaki Mitsui (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic system includes: a first bi-directional pump connected to a head-side chamber of a single-rod cylinder by a head-side line and connected to a rod-side chamber of the single-rod cylinder by a rod-side line; and a second bi-directional pump connected to the head-side line by a supply/discharge line, the second bi-directional pump being a variable displacement pump. The hydraulic system further include...