Patent Number: 7,823,708

Title: Magnetorheological damping device for reduction or elimination of vibration in steering systems

Abstract: A damping device for use with a rotatably-mounted steering shaft. The damping device comprises a magnetorheological material that can be embedded in an open-network carrier and is directly or indirectly in contact with the steering shaft, a coil arranged in effective proximity to the magnetorheological material, and a body indirectly in contact with the steering shaft through the magnetorheological material, which does not rotate with the steering shaft. A voltage can be applied the coil to activate the magnetorheological material, increasing a viscosity of the magnetorheological material to inhibit relative rotation of the steering shaft and the body.

Inventors: Maranville; Clay (Ypsilanti, MI), Giese; Dieter (Dearborn, MI), Ginder; John (Plymouth, MI), Schmidt; Joe (Milan, MI)

Assignee: Ford Global Technologies, LLC

International Classification: F16F 15/03 (20060101)

Expiration Date: 2019-11-02 0:00:00