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.:
Date of Patent:
Aug. 13, 2019
Filed:
Nov. 09, 2016
Applicant:
Eagleburgmann Japan Co., Ltd., Tokyo, JP;
Inventor:
Kazuhiko Sato, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 19/04 (2006.01); F16C 33/76 (2006.01); F16J 15/43 (2006.01); F16C 37/00 (2006.01); F16C 35/12 (2006.01); F16C 33/74 (2006.01); F16C 19/08 (2006.01);
U.S. Cl.
CPC ...
F16C 33/765 (2013.01); F16C 37/007 (2013.01); F16J 15/43 (2013.01); F16C 19/08 (2013.01); F16C 33/746 (2013.01); F16C 35/12 (2013.01); F16C 37/005 (2013.01); F16C 2300/62 (2013.01);
Abstract
A magnetic fluid seal includes an outer cylinder member with a heat barrier that internally houses a rotating shaft extending from a housing of a fluid machine and includes an attachment portion to be attached to the housing, magnetic pole members that are disposed around the rotating shaft housed in the outer cylinder member and form a magnetic circuit, and sealing films that are magnetically connected to the magnetic circuit, are respectively disposed between the magnetic pole members and the rotating shaft, are made of magnetic fluids, and are formed in an axial direction.