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:
May. 26, 2009
Filed:
Jul. 31, 2003
Yoshihiro Suda, Tokyo, JP;
Kouji Hio, Tokyo, JP;
Takuhiro Kondo, Tokyo, JP;
Hideki Yamagata, Tokyo, JP;
Yoshihiro Suda, Tokyo, JP;
Kouji Hio, Tokyo, JP;
Takuhiro Kondo, Tokyo, JP;
Hideki Yamagata, Tokyo, JP;
The Foundation for the Promotion of Industrial Science, Tokyo, JP;
Kayaba Industry Co., Ltd., Tokyo, JP;
Abstract
An electromagnetic damper control device including a first member containing a magnet, and a second member containing a solenoid combined to permit relative rotation. The relative rotation of the first and second members induces an electromagnetic force in a solenoid that serves as a damping force to a motion. The device further comprises a current limiter device operated by a voltage generated in the solenoid due to the relative rotation of the first member and second member. The current limiter devices regulates the electrical current flowing in the solenoid to a specific value based on the voltage generated in the solenoid so that by regulating the damping force of the electromagnetic damper a desired damping force can be applied to the electromagnetic damper without requiring external electrical power.