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:
Jan. 26, 2021
Filed:
Jul. 11, 2019
Nidec Sankyo Corporation, Nagano, JP;
Satoru Yokoe, Nagano, JP;
Takehiko Yazawa, Nagano, JP;
NIDEC SANKYO CORPORATION, Nagano, JP;
Abstract
Provided is a valve drive device including a power transmission switching unit capable of reducing noise and improving positional accuracy to perform smooth power switching. In the valve drive device, a valve element drive mechanism includes a motor, a driving gear, a driven gear, and a power transmission switching unit configured to switch between a power transmission state and a power non-transmission state. The power transmission switching unit includes at least one convex unit formed on the driven gear, a rotation restriction unit that is pivotably mounted on the driven gear with respect to the driven gear and engageable with the at least one convex unit, and a lever pivoting restriction unit formed on the driven gear and configured to restrict the rotation restriction unit from pivoting. The rotation restriction unit includes a pivot shaft and a lever unit.