ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,674, issued on Sept. 23, was assigned to Honda Motor Co. Ltd. (Tokyo).
"Work machine" was invented by Kota Tokubi (Wako, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A work machine that compacts a road surface by rotation of a roller, the work machine comprises: a motor that outputs a driving force for rotating the roller; a first battery and a second battery that supply electric power to the motor; and a housing that holds the motor, the first battery, and the second battery. An upper surface of the housing has: a first opening into which the first battery is insertable, and a second opening into which the second battery is insertable, and...