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:
Dec. 27, 2022
Filed:
Oct. 29, 2019
Kyb Corporation, Tokyo, JP;
Nidec Tosok Corporation, Zama, JP;
Kohei Kubo, Gifu, JP;
Tomoyuki Fujita, Gifu, JP;
Koichiro Akatsuka, Gifu, JP;
Yoshiyuki Maki, Aichi, JP;
Koji Higuchi, Kanagawa, JP;
Yutaka Hashimoto, Kanagawa, JP;
KYB CORPORATION, Tokyo, JP;
NIDEC TOSOK CORPORATION, Zama, JP;
Abstract
An electric pump provided with a pump unit configured to discharge working oil by being rotationally driven by an electric motor includes: a drive shaft configured to transmit rotational driving force from the electric motor to a rotor of the pump unit; a rotation-detection shaft provided coaxially with the drive shaft, the rotation-detection shaft being configured to be rotated together with the rotor; and a rotation detector unit configured to detect rotation of the rotation-detection shaft. The rotation-detection shaft has: an engagement portion configured to engage with the rotor; and a detection-target portion facing the rotation detector unit, and an outer diameter of the detection-target portion is set so as to be larger than an outer diameter of the engagement portion.