Title:
Safety valve
Document Type and Number:
Japanese Patent JP6224972
Kind Code:
B2
Abstract:
In the relief valve, an annular convex portion (16a) that is convexed in a direction in which a valve element (5a) moves away from a valve hole (17) along a center axis of the valve hole (17) and that is arranged around the valve hole (17) is formed in a valve chamber (16), an annular concave portion (5d) that is concaved in the direction in which the valve element (5a) moves away from the valve hole (17) is formed in the valve element (5a), and in a shut-off state, the annular convex portion (16a) is accommodated in the annular concave portion (5d), and an annular channel (19) that extends in a direction of the center axis is formed between an outer peripheral surface (16b) of the annular convex portion (16a) and an inner peripheral surface (5e) of the annular concave portion (5d).
Inventors:
Kazuki Hirai
Application Number:
JP2013195399A
Publication Date:
November 01, 2017
Filing Date:
September 20, 2013
Export Citation:
Assignee:
Surpass Industry Co., Ltd.
International Classes:
F16K17/06; F16K17/04; F16K47/02
Domestic Patent References:
| JP4003170U | ||||
| JP5765273U |
Foreign References:
| US4401264 |
Attorney, Agent or Firm:
Noriharu Fujita
Kunio Ueda
Kunio Ueda