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:
Aug. 09, 2022
Filed:
Mar. 18, 2020
Smc Corporation, Chiyoda-ku, JP;
Yoshitada Doi, Koshigaya, JP;
Yuzuru Okita, Tsukubamirai, JP;
Yoji Niimi, Tsukubamirai, JP;
Hirofumi Ueda, Moriya, JP;
Tsugumichi Fujiwara, Moriya, JP;
SMC CORPORATION, Chiyoda-ku, JP;
Abstract
In a fluid control valve, a cylinder chamber includes a first pilot chamber extending from a piston in one of sliding directions. An opening of a first pilot port allowing supply and discharge of fluid is formed in the inner wall of the first pilot chamber. The fluid is accommodated in the first pilot chamber when the piston is in a valve open position, and discharged via the opening when the piston is displaced toward a valve closed position. At least one of the piston and a valve body includes a throttle portion forming, between the piston and the valve body, a throttle path having a cross-sectional area smaller than the area of the opening, after the piston starts being displaced from the valve open position toward the valve closed position.