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:
Oct. 13, 2026
Filed:
Feb. 06, 2023
Fujikin Incorporated, Osaka, JP;
Nobuo Nakamura, Osaka, JP;
Tatsuhiko Sato, Osaka, JP;
Tomohiro Nakata, Osaka, JP;
Kengo Tsujino, Osaka, JP;
FUJIKIN INCORPORATED, Osaka, JP;
Abstract
A valve device includes: a valve body defining a flow path; a diaphragm as a valve element for opening and closing the flow path; a stem for making the diaphragm separate and seat on a valve seat; a coil spring as a spring member for constantly biasing the stem in a valve-closing direction; a piston connected to the stem; and an actuator body for slidably accommodating the piston, wherein the inside of the actuator body is partitioned by the piston into a pressure chamber to which a driving gas is supplied and an atmospheric chamber communicating with the atmosphere via vent holes formed in the actuator body, and the actuator body includes an adjustment mechanism capable of restricting the ventilation amounts of the vent holes so as to adjust a valve closing time required for valve closing and a valve opening time required for valve opening to be equal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile