Title:
VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/219936
Kind Code:
A1
Abstract:
A valve device comprising: a first valve body having an opening portion; a second valve body which is disposed inside the first valve body and which is capable of moving relative to the first valve body; a first valve seat which is provided in the periphery of an opening portion of a valve chamber and with which the first valve body is brought into contact; a second valve seat which is provided in the periphery of the opening portion of the first valve body and with which the second valve body is brought into contact; a piston which is brought into contact with the second valve body and which applies a force to the second valve body so that the second valve body is moved apart from the second valve seat; a movement amount restricting member which is fixed to the first valve body and which restricts the movement amount of the second valve body relative to the first valve body in the axial direction; and a rotation restricting member that restricts the rotation of the first valve body relative to the second valve body.
Inventors:
ITAHARA MITSUYOSHI (JP)
Application Number:
PCT/JP2022/007381
Publication Date:
October 20, 2022
Filing Date:
February 22, 2022
Export Citation:
Assignee:
AISAN IND (JP)
International Classes:
F16K1/50
Foreign References:
| JP2017079026A | 2017-04-27 | |||
| JP2019199926A | 2019-11-21 | |||
| JP2021014847A | 2021-02-12 | |||
| JP2017194120A | 2017-10-26 | |||
| DE102018126159A1 | 2019-01-17 |
Attorney, Agent or Firm:
KAI-U PATENT LAW FIRM (JP)
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