Magnetic fluid sealing apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9746084
APP PUB NO 20160312899A1
SERIAL NO

15104014

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An even number of magnets (5) are incorporated in a housing (3) while sandwiched by pole pieces (6). A rotating shaft (2) has a boundary which is provided in a hollow portion (3a) of the housing (3) and nearer to an airtight chamber (1) than a pole piece (6) nearest to the airtight chamber (1), and an area of the rotating shaft (2) which is nearer to the airtight chamber (1) than the boundary is formed of a non-magnetic material. In the housing (3), an area located near the airtight chamber (1) from a site which is in contact with a pole piece (6) nearest to the airtight chamber (1) is formed of a magnetic material.

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Patent Owner(s)

Patent OwnerAddress
RIGAKU CORPORATIONAKISHIMA-SHI TOKYO 196-8666

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shimazaki, Yasuyuki Akishima, JP 7 65

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