ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,444,245, issued on Oct. 14, was assigned to HITACHI CONSTRUCTION MACHINERY Co. LTD. (Tokyo).
"Mine management system" was invented by Yoichi Iihoshi (Tokyo), Kenji Mizutani (Tokyo), Kouichirou Ejiri (Tokyo), Hiroshi Tsukui (Tokyo) and Kouji Otani (Tsuchiura, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention of the present application has an object of providing a mine management system capable of separately sensing an abnormality of a powertrain system and a load amount sensor of a mine dump truck. For this purpose, a mine management system for managing mine dump trucks operating in a mine includes a processing device that calculates and...