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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/097670
Kind Code:
Provided is a breather valve with which the degree of opening in the valve-open state can be increased while improving the valve-closing force in the valve-closed state. This breather valve (1) is provided with a switching mechanism, and when the degree of opening of a valve body (4) is equal to or greater than a prescribed value (A0) a pressure application space (S1) and a space outside a container (100) are connected. A valve-closing force in accordance with the air pressure (P1) in the pressure application space (S1) acts on the valve body (4), and when the degree of opening of the valve is equal to or greater than the prescribed value (A0) the valve-closing force decreases. Thus, the valve-closing force can be reduced and the degree of opening can be increased in a second valve-open state while improving the valve-opening force in the valve-closed state.

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ABE, Kazuomi (10-6, Shiba 5-chome, Minato-k, Tokyo 14, 〒1080014, JP)
Application Number:
Publication Date:
May 23, 2019
Filing Date:
November 17, 2017
Export Citation:
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KANEKO SANGYO CO., LTD. (10-6, Shiba 5-chome Minato-k, Tokyo 14, 〒1080014, JP)
International Classes:
Foreign References:
Attorney, Agent or Firm:
TAKINO, Fumio et al. (4F Hulic Ginza East Bldg, 5-13-16 Ginza, Chuo-k, Tokyo 61, 〒1040061, JP)
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