ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,369, issued on June 3, was assigned to JATCO LTD (Fuji, Japan) and NISSAN MOTOR Co. LTD. (Yokohama, Japan).
"Hydraulic supply device" was invented by Tomoko Sugano (Yokohama, Japan), Takurou Kawasumi (Ebina, Japan) and Kenji Sakakibara (Sagamihara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic supply device includes: a first oil pump configured to supply oil to a supply passage; a second oil pump driven together with the first oil pump or driven when the first oil pump is stopped; a first check valve provided in a first oil passage that allows a suction side of the second oil pump to communicate with an oil source, and configured t...