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:
Jun. 24, 2014
Filed:
Aug. 23, 2012
Yoshinori Kaneda, Minato-ku, JP;
Shinichiro Kawabata, Minato-Ku, JP;
Koji Hisano, Minato-ku, JP;
Hirokazu Izawa, Minato-ku, JP;
Hiroshi Nishimura, Minato-ku, JP;
Yoshinori Kaneda, Minato-ku, JP;
Shinichiro Kawabata, Minato-Ku, JP;
Koji Hisano, Minato-ku, JP;
Hirokazu Izawa, Minato-ku, JP;
Hiroshi Nishimura, Minato-ku, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Consumer Electronics Holdings Corporation, Tokyo, JP;
Toshiba Home Appliances Corporation, Tokyo, JP;
Abstract
A damper obtaining damping force by the frictional resistance imparted by the viscosity of the magnetic viscous fluid is disclosed. The damper is provided with a seal not only on one (lower side) of the axial outer sides of the yoke but also on the other (upper side) of the axial outer sides of the yoke to trap the magnetic viscous fluid within the magnetic viscous fluid filling portion at both axial outer sides of magnetic viscous fluid filling portion. Because the leakage of the magnetic viscous fluid can be prevented, no air is introduced into the magnetic viscous fluid filling portion, to allow the density of the magnetic viscous fluid within magnetic viscous fluid filling portion to be maintained at a favorable level and prevent degradation of damping force.