ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,624, issued on May 13, 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), Shinjirou Yamamoto (Ami-Machi, Japan), Hiroaki Amano (Tsukuba, Japan), Shinji Nishikawa (Kasumigaura, Japan) and Akihiro Narazaki (Tsukuba, 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 makes it possible to perform, with a simple configuration, speed control of respective actuators and thrust control of a particular actuato...