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:
Jun. 23, 2026
Filed:
Jun. 05, 2023
Fujikura Composites Inc., Tokyo, JP;
Fujikin Incorporated, Osaka, JP;
Shono Ochibe, Saitama, JP;
Shouichi Nagashima, Saitama, JP;
Tomohiro Nakata, Osaka, JP;
Nobuo Nakamura, Osaka, JP;
FUJIKURA COMPOSITES INC., Tokyo, JP;
FUJIKIN INCORPORATED, Osaka, JP;
Abstract
An actuator includes a casing, a shaft body disposed inside the casing, and formed with a long hole LH and multiple exhaust holes EH; multiple assemblies arranged to correspond to the multiple exhaust holes EH, respectively, each assembly having a partition body and a piston body, and forming a closed space with each partition body, each partition body abutting an inner circumferential surface of the casing over the entire circumference while allowing penetration of the shaft body, each piston body allowing the shaft body to penetrate it; a biasing body biases a piston body from an upper end side toward a lower end side; and a push rod connected to an opposite side of the shaft body with respect to an opening of the shaft body. An open/close valve mechanism includes the actuator, a valve body, and a body, and has a function of controlling communication and shut-off of fluid.