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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9746084 B1

PDFFull Text
Date of Patent:
Aug. 29, 2017

Filed:

Sep. 12, 2014

Magnetic fluid sealing apparatus

Applicant:

Rigaku Corporation, Akishima-shi, Tokyo, JP;

Inventor:

Yasuyuki Shimazaki, Akishima, JP;

Assignee:

RIGAKU CORPORATION, Tokyo, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Gilbert Lee

Int. Cl.
CPC ...
F16J 15/40 (2006.01); F16J 15/43 (2006.01); F16J 15/16 (2006.01); F16J 15/3212 (2016.01); F16C 33/76 (2006.01); F16C 19/54 (2006.01);
U.S. Cl.
CPC ...
F16J 15/43 (2013.01); F16C 33/765 (2013.01); F16J 15/16 (2013.01); F16J 15/164 (2013.01); F16J 15/3212 (2013.01); F16C 19/54 (2013.01);
Abstract

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

Find Patent Forward Citations

Shimazaki, Yasuyuki. (2017). Magnetic fluid sealing apparatus (U.S. Patent No. 9746084). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9746084

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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