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:
Sep. 24, 2013
Filed:
Jun. 06, 2012
Kuniaki Oka, Nishio, JP;
Jun Yamada, Okazaki, JP;
Makoto Otsubo, Anjo, JP;
Shuhei Oe, Nukata-gun, JP;
Taketsugu Sasaki, Nagoya, JP;
Kenichi Nara, Nagoya, JP;
Kuniaki Oka, Nishio, JP;
Jun Yamada, Okazaki, JP;
Makoto Otsubo, Anjo, JP;
Shuhei Oe, Nukata-gun, JP;
Taketsugu Sasaki, Nagoya, JP;
Kenichi Nara, Nagoya, JP;
Denso Corporation, Kariya, JP;
Abstract
A fluid brake device has a rotor having a brake shaft penetrating a case to come into contact with magnetic viscosity fluid. A sealing sleeve is arranged to surround the brake shaft, and a seal gap is defined between the sealing sleeve and the brake shaft and communicates with a fluid chamber. The sealing sleeve has a flux guide that guides magnetic flux to the brake shaft through the seal gap. The brake shaft has a magnetic shaft extending in an axis direction, and a regulation layer that regulates the magnetic flux from passing by covering an outer circumference surface of the magnetic shaft. The brake shaft has an exposing part opposing to the magnetic flux guide, and the exposing part of the brake shaft is exposed from the regulation layer.