ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,873, issued on July 29, was assigned to Hitachi Construction Machinery Co. Ltd. (Tokyo).
"Work machine" was invented by Kento Kumagai (Ami-machi, Japan), Shinya Imura (Toride, Japan), Yasutaka Tsuruga (Ryugasaki, Japan), Takaaki Chiba (Kasumigaura, Japan), Hiroaki Amano (Tsukuba, Japan), Shinji Nishikawa (Kasumigaura, Japan), Akihiro Narazaki (Tsukuba, Japan), Genroku Sugiyama (Ryugasaki, Japan) and Shinjiro Yamamoto (Ami-machi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to provide a work machine that can increase the operation speed of an actuator by a regenerating function while ensuring accuracy of ...