The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
May. 12, 2023
Jatco Ltd, Fuij, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Masahiro Kusuda, Kanagawa, JP;
Hisao Nobu, Tokyo, JP;
Yuki Tawara, Shizuoka, JP;
Takahiro Ikeda, Kanagawa, JP;
Masayuki Shimizu, Kanagawa, JP;
Masanori Satou, Tokyo, JP;
Norihiro Ishikawa, Kanagawa, JP;
Kenji Kojima, Kanagawa, JP;
Kenji Sakakibara, Kanagawa, JP;
Daisuke Yanagawa, Kanagawa, JP;
JATCO LTD, Fuji, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A hydraulic circuit includes a first oil path, a second oil path, a hydraulic control circuit, a third oil path, a check valve, and a relief valve. The first oil path links to a discharge port of a first oil pump. The second oil path links to a discharge port of a second oil pump. In the hydraulic control circuit, a first regulator valve is disposed downstream of a confluence point of the first oil path and the second oil path. The third oil path connects a suction port of the first oil pump and a strainer. The check valve is provided in the third oil path and restricts a movement of oil toward the strainer side. The relief valve is provided in the third oil path and discharges oil in the third oil path to an outside when a pressure in the third oil path exceeds a reference pressure.