ALEXANDRIA, Va., April 2 -- United States Patent no. 12,264,452, issued on April 1, was assigned to HITACHI CONSTRUCTION MACHINERY Co. LTD. (Tokyo).
"Work machine" was invented by Ryu Narikawa (Tokyo), Kouji Fujita (Ibaraki, Japan), Hideaki Itou (Ibaraki, Japan), Hidefumi Ishimoto (Ibaraki, Japan), Teppei Saitoh (Tokyo) and Tadashi Nishizawa (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a work machine that allows assisting a loading work without giving uncomfortable feeling to an operator. The control device 40 of the work machine 1 includes an allowable range calculation section 46 that calculates an allowable range indicating a range in which the front work device 2 is movable in a heig...