ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,805, issued on Sept. 30, was assigned to SUMITOMO CONSTRUCTION MACHINERY Co. LTD. (Tokyo).
"Shovel" was invented by Youji Misaki (Chiba, Japan) and Ryuji Shiratani (Chiba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A shovel includes a lower traveling structure, an upper swing structure swingably mounted on the lower traveling structure, a first hydraulic pump provided on the upper swing structure, an attachment attached to the upper swing structure, a first actuator, a second actuator, a first directional control valve corresponding to the first actuator, a second directional control valve corresponding to the second actuator, a first con...