ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,751, issued on Aug. 5, was assigned to SUMITOMO CONSTRUCTION MACHINERY Co. LTD. (Tokyo).
"Shovel" was invented by Kiminori Sano (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, an engine mounted on the upper swing structure, a first hydraulic pump and a second hydraulic pump each configured to be driven by the engine, a first regulator configured to control the first geometric displacement of the first hydraulic pump, a second regulator configured to control the second geometric dis...