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:
Sep. 22, 2020
Filed:
May. 29, 2019
Nidec Sankyo Corporation, Nagano, JP;
Satoru Yokoe, Nagano, JP;
NIDEC SANKYO CORPORATION, Suwa-Gun, Nagano, JP;
Abstract
There is provided a valve drive device comprising: a motor including a stator with a core member and a drive coil, and a rotor provided with a drive magnet; a drive gear configured to rotate together with the rotor, a driven gear configured to rotate a valve element; and a power transmission switching unit configured to switch between a power transmission state where the drive gear and the driven gear mesh with each other and a power non-transmission state where a meshing state between the drive gear and the driven gear is released. The power transmission switching unit includes a plurality of convex units formed on the drive gear, and a rotation restriction unit provided in the driven gear and configured to engage with each of the convex units to perform switching of the power transmission.