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:
Dec. 01, 2015
Filed:
Aug. 14, 2014
Applicant:
Denso Corporation, Kariya, Aichi-pref., JP;
Inventors:
Seiichiro Washino, Nagoya, JP;
Takashi Furukawa, Nisshin, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/34 (2006.01); F01L 1/344 (2006.01); F16D 57/00 (2006.01); F16F 9/53 (2006.01); F01L 1/352 (2006.01);
U.S. Cl.
CPC ...
F01L 1/34409 (2013.01); F01L 1/352 (2013.01); F16D 57/002 (2013.01); F16F 9/53 (2013.01); F01L 2001/34479 (2013.01); F01L 2001/3522 (2013.01);
Abstract
A torque control device includes a seal structure sealing a clearance between a hollow object and a rotation shaft. The seal structure includes a particle seal, a liquid seal, an intermediate fluid which fills a middle chamber defined between the particle seal and the liquid seal, and a coating film having a hardness higher than that of magnetic particle. The coating film is arranged to at least at a seal perimeter part of the rotation shaft, and a seal gap is defined between the particle seal and the seal perimeter part.