Shimano Inc.

Eagle Industry Co., Ltd.

Eagle Industries Co., Ltd.

Daiki Sumikawa

Hirokazu Hiraoka

Hirokazu Hirayama

Kotaro Oshita

A butterfly valve that is capable of reducing torque and improves sealing performance. The butterfly valveincludes a shaft member, a tabular valve body that is provided on the shaft member, a casethat is attachable to and detachable from a through-holeformed in an attachment memberto which the butterfly valveis configured to be attached, a pair of bearingsthat is provided in the caseand rotatably supports the shaft member, and a magnetic fluid seal that is provided between the pair of bearingsin the caseand seals an annular gap between the caseand the shaft member

Butterfly valve

A fishing reel that includes a reel body, a housing part that defines an opening part, a driving member that includes a pinion that is supported by the reel body and extends through the opening part of the housing part, and a magnetic seal device affixed to the housing part that includes a central opening through which the pinion extends. The magnetic seal device includes first and second magnetic plates that maintain a magnet therebetween and a magnetic fluid that is maintained at a gap between the driving member and at least one of the first and second magnetic plates.

Fishing reel and magnetic seal device therefor

A magnetic fluid seal () sealing between an apparatus end () and a rotating shaft () going through the apparatus end, comprising a housing () comprising a magnetic flux generating means () generating a magnetic flux and a magnetic flux transfer means () facing to the rotating shaft with a fine clearance and transferring the magnetic flux, and placed so as to move relatively in a radial direction of the rotating shaft with respect to the apparatus end and a magnetic fluid () held in the fine clearance by the magnetic flux generated by the magnetic flux generating means.

Growing community of inventors

Tokyo, Japan

Daiki Sumikawa