ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,450,528, issued on Oct. 21, was assigned to HITACHI CONSTRUCTION MACHINERY Co. LTD. (Tokyo).
"Work management system" was invented by Tsuyoshi Fujita (Ibaraki, Japan) and Eiji Egawa (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a construction management system capable of ascertaining information about a construction site more accurately than before. A construction management system 100 comprises: a position sensor 16a detecting position information about a transport vehicle 10 that transports payload; a position sensor 26 detecting position information about a loading machine 20 that loads payload onto th...