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:
Mar. 31, 2020
Filed:
Aug. 02, 2018
Azbil Corporation, Tokyo, JP;
Hiroaki Narita, Tokyo, JP;
Azbil Corporation, Tokyo, JP;
Abstract
An electric actuator comprises an electricity storing portion that stores electric energy, a charging portion that charges the electricity storing portion when the electric actuator is energized by receiving electric power from outside, and a controlling portion that controls the entire actuator. The controlling portion controls the opening degree of a valve according to an opening degree target value when the electric actuator is energized and operates the valve to a desired opening position using energy stored in the electricity storing portion when interruption of electric service occurs. In addition, the controlling portion causes the charging portion to start charging of the electricity storing portion when a charge waiting time that depends on predetermined priority of charging has elapsed after electric power is turned on.