ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,484, issued on June 17, was assigned to Hitachi Construction Machinery Co. Ltd (Tokyo).
"Work machine" was invented by Masamichi Ito (Toride, Japan), Koji Shiwaku (Tsuchiura, Japan) and Shinya Kasai (Kashiwa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a work machine including a front work device, the work machine including a state amount sensor that senses a state amount relating to an action state of the work device and a controller that controls an action of the work machine on the basis of an operation signal transmitted from a remote device by radio communication. The controller assesses a communication status of the radio ...