Impact energy absorber and process

Details Impact energy absorber and process Impact energy absorber and process

2006-01-10

2006-01-10

Williams, Thomas (Department: 3683)

Brakes

Internal-resistance motion retarder

Magnetic fluid or material

C188S372000

Reexamination Certificate

active

06983832

ABSTRACT:
A tunable and reusable impact energy absorbing system and process includes a control structure comprising a sleeve having an outer surface fixedly attached to a chassis, a seal at each end of the sleeve, a magnetorheological fluid disposed between the seals, and a coil in proximity to the magnetorheological fluid, wherein the seal and the magnetorheological fluid are in sliding engagement with a support member, wherein the impact surface is fixedly attached to a support member. Varying the current to the coil alters the magnetic field upon the magnetorheological fluid, which can be used to tune the yield stress of the sliding engagement.

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