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. 05, 2021
Filed:
Nov. 15, 2017
Applicant:
Kitz Sct Corporation, Tokyo, JP;
Inventor:
Chokuto Kou, Gunma, JP;
Assignee:
KITZ SCT CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 7/16 (2006.01); F16K 31/163 (2006.01); F16K 31/524 (2006.01);
U.S. Cl.
CPC ...
F16K 7/16 (2013.01); F16K 31/163 (2013.01); F16K 31/52491 (2013.01);
Abstract
Provided is a valve actuator in a simple structure and easily downsizable, having reliable valve openability and closability even under high pressure, and also capable of exerting high durability even with a high frequency of valve opening and closing, and a diaphragm valve including this valve actuator. In the valve actuator, a repulsive member provided in an actuator main body, a piston pressed by this repulsive member, and at least two air chambers for moving the piston by an air pressure are arranged and a booster mechanism for exerting a force amplified in a valve-closing direction is accommodated in any of the air chambers.