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:
Nov. 22, 2022
Filed:
Jul. 11, 2018
Applicant:
Eagle Industry Co., Ltd., Tokyo, JP;
Inventors:
Hidekazu Takahashi, Tokyo, JP;
Yoshihisa Takano, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/43 (2006.01); F16J 15/3276 (2016.01);
U.S. Cl.
CPC ...
F16J 15/43 (2013.01); F16J 15/3276 (2013.01);
Abstract
The shaft seal device includes a seal cover formed in a tubular shaped and provided on an outer periphery of a rotation shaft which is inserted into an axial hole of a housing, a flexible member that connects the seal cover to the housing, an auxiliary seal portion provided on an interior side of the shaft seal device in an axial direction of the seal cover, a magnetic fluid seal portion provided on an exterior side of the shaft seal device from the auxiliary seal portion in the axial direction of the seal cover, and bearings that support a load of the magnetic fluid seal portion.