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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/190148
Kind Code:
Provided is a butterfly valve that enables a reduction in torque and that enables the manufacturer manufacturing and selling the butterfly valve to manage product quality such as sealing performance. This butterfly valve is characterized by being equipped with: a shaft member 100; a plate-shaped valve body provided on the shaft member; a case 310 that can be attached/detached inside a through-hole 510 formed in an attachment member 500 to which the butterfly valve 10 is attached; a pair of bearings 320 provided inside the case 310 and rotatably supporting the shaft member 100; and a magnetic fluid seal provided between the pair of bearings 320 inside the case 310 and sealing an annular gap between the case 310 and the shaft member 100.

SUMIKAWA, Daiki (1-12-15, Shiba-Daimon, Minato-k, Tokyo 87, 〒1058587, JP)
Application Number:
Publication Date:
October 18, 2018
Filing Date:
March 30, 2018
Export Citation:
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EAGLE INDUSTRY CO., LTD. (1-12-15, Shiba-Daimon Minato-k, Tokyo 87, 〒1058587, JP)
International Classes:
F16K1/226; F16C19/06; F16C19/54; F16C33/78; F16J15/43; F16K41/02
Foreign References:
Attorney, Agent or Firm:
NAKAMURA, Go et al. (Acropolis 21 Bldg. 8th Floor, 4-10 Higashi Nihonbashi 3-chome, Chuo-k, Tokyo 04, 〒1030004, JP)
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