ALEXANDRIA, Va., July 7 -- United States Patent no. 12,673,560, issued on July 7, was assigned to KOMATSU LTD. (Tokyo).
"Haul vehicle and method for controlling haul vehicle" was invented by Natsuki Watanabe (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A haul vehicle includes a dump body, a vehicle body supporting the dump body, a traveling apparatus including driving wheels and supporting the vehicle body, a trolley power receiving apparatus to which power is supplied from a trolley wire, a fuel cell that generates power through electrochemical reaction between hydrogen and oxygen, and an electric motor that generates driving force for rotating the driving wheels on a basis of power from at least o...