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:
Apr. 08, 2003
Filed:
May. 25, 2001
Applicant:
Inventor:
Richard D. Anderson, Atlanta, GA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 9/53 ;
U.S. Cl.
CPC ...
F16F 9/53 ;
Abstract
A method for controlling the damping force of a damper containing a movable object in a magneto-rheological fluid, in which a positive magnetic field is applied to the fluid to achieve an increase in viscosity (and an increase in damping force) and the polarity of the magnetic field is reversed by negative electrical energy to remove residual magnetism before reestablishing the magnetic field at a lower level to achieve a predictable decrease in viscosity (and a decrease in damping force).