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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/059324
Kind Code:
The purpose of the present invention is to provide a diaphragm valve in which the effect of preventing a diaphragm from falling off from a connecting member is improved. The diaphragm valve is provided with a body having a flow path, a stem, a diaphragm, a diaphragm presser attached to the lower end of the stem, and a coupling member for coupling the diaphragm and the diaphragm presser. The coupling member has a rod-shaped part coupled with the diaphragm presser and a flange part at the lower end of the coupling member, the flange part protruding in circular form in the radial direction and having at least one notch formed at an outer circumferential edge. A constricted part depressed in the radial direction is formed in a portion of the rod-shaped part above the flange part, the flange part and the constricted part being embedded in the middle portion of the diaphragm.

OBARA Shunji (3-2 Itachibori 2-chome, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
YAKUSHIJIN, Tadayuki (3-2 Itachibori 2-chome, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
HIGUCHI Takayuki (3-2 Itachibori 2-chome, Nishi-ku, Osaka-sh, Osaka 12, 〒5500012, JP)
Application Number:
Publication Date:
March 28, 2019
Filing Date:
September 20, 2018
Export Citation:
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FUJIKIN INCORPORATED (3-2 Itachibori 2-chome, Nishi-ku Osaka-sh, Osaka 12, 〒5500012, JP)
International Classes:
F16K7/12; F16K7/17
Domestic Patent References:
Foreign References:
Attorney, Agent or Firm:
KIYOHARA Yoshihiro (5-17, Dojima 1-chome Kita-ku, Osaka-sh, Osaka 03, 〒5300003, JP)
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