ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,910, issued on April 29, was assigned to NISSAN MOTOR Co. LTD. (Yokohama, Japan).
"Pump structure of internal combustion engine" was invented by Shimpei Yamashita (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An oil structure of an internal combustion engine includes a main oil pump configured to suck lubricating oil stored in a crankcase and feed the lubricating oil to respective engine parts and a scavenge pump configured to recover the lubricating oil from any lubricated engine part and return the lubricating oil into the crankcase. The scavenge pump has: an oil suction passage extending from the lubricated engine part to a sucti...