US Patent Issued to SUMITOMO CONSTRUCTION MACHINERY on July 21 for "Excavator" (Japanese Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,996, issued on July 21, was assigned to SUMITOMO CONSTRUCTION MACHINERY Co. LTD. (Tokyo).

"Excavator" was invented by Riichi Nishikawara (Chiba, Japan), Ryuji Shiratani (Chiba, Japan), Kiminori Sano (Chiba, Japan), Tomoki Kurokawa (Chiba, Japan) and Hajime Aragaki (Chiba, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An excavator includes: a traveling lower body including left and right crawlers; a revolving upper body on the traveling lower body, to be capable of revolving; hydraulic motors to drive the crawlers; left and right traveling operation device to drive the hydraulic motors; a hydraulic pump to supply hydraulic oil to the hydraulic...