Koyo Seiko Company, Ltd.

Tetsuo Oda

Shinji Abe

Hirokazu Takii

Kazuya Suzuki

Hirotsugu Kusano

A ferrofluid seal apparatus comprises magnetic fluid holding means for storing a magnetic fluid with one of an inner and an outer elements which are relatively rotated. The magnetic fluid holding means has a storage section for storing a part of the magnetic fluid which flows out of said magnetic fluid holding means.

Ferrofluid seal apparatus

A ferrofluid seal apparatus comprises magnetic fluid holding or positing means for storing or retaining a magnetic fluid in a sealing arrangement wherein inner and outer elements are relatively rotated. The magnetic fluid holding means includes an arrangement for retaining the magnetic fluid which flows out from its original position.

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Osaka, Japan

Tetsuo Oda