ALEXANDRIA, Va., May 26 -- United States Patent no. 12,637,332, issued on May 26, was assigned to TADANO LTD. (Kagawa, Japan).
"Work machine" was invented by Yasuhiro Fukumori (Kagawa, Japan) and Naoto Kawabuchi (Kagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "This work machine includes: a first hydraulic cylinder and a second hydraulic cylinder that telescope a telescopic boom on the basis of hydraulic oil supply and discharge, a switching valve that is disposed on a pressure relief circuit for connecting the first hydraulic cylinder and the second hydraulic cylinder to a tank, and a control unit that causes the switching valve to connect the first hydraulic cylinder to the tank and releases th...