Invention Grant
- Patent Title: Time delay valve and flow rate controller
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Application No.: US18000659Application Date: 2020-09-30
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Publication No.: US11852260B2Publication Date: 2023-12-26
- Inventor: Akiho Nishimura , Akira Tadano
- Applicant: SMC CORPORATION
- Applicant Address: JP Chiyoda-ku
- Assignee: SMC CORPORATION
- Current Assignee: SMC CORPORATION
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP 20097348 2020.06.04
- International Application: PCT/JP2020/037157 2020.09.30
- International Announcement: WO2021/245957A 2021.12.09
- Date entered country: 2022-12-02
- Main IPC: F16K31/36
- IPC: F16K31/36 ; G05D7/01 ; F16K31/363

Abstract:
A time delay valve includes a switching valve that switches between a first position and a second position; an urging member that urges the switching valve toward the first position; a driving mechanism that urges the switching valve toward the second position located opposite the first position in the presence of the pressure of a pilot fluid being supplied; a pilot flow channel that introduces the pilot fluid to the driving mechanism; and a delaying mechanism that delays the switching timing of the switching valve. The delaying mechanism includes a first throttle valve provided on the pilot flow channel, a compensation mechanism that urges the switching valve toward the first position in the presence of the pressure of the pilot fluid being supplied, and a compensation flow channel that is branched from the pilot flow channel to introduce a portion of the pilot fluid to the compensation mechanism.
Public/Granted literature
- US20230213113A1 TIME DELAY VALVE AND FLOW RATE CONTROLLER Public/Granted day:2023-07-06
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