Brakes – Internal-resistance motion retarder – Magnetic fluid or material
Reexamination Certificate
2005-12-13
2005-12-13
Butler, Douglas C. (Department: 3683)
Brakes
Internal-resistance motion retarder
Magnetic fluid or material
C068S023100, C188S074000, C188S171000, C188S031000
Reexamination Certificate
active
06974000
ABSTRACT:
An apparatus comprising a frame; a member movable relative to said frame; a damping device interconnected between the frame and the movable member; a controller for activating the damper to generate a damping condition at a predetermined member operating condition; and system for activating the damping device at a predetermined operating condition of the moving member during a loss of power to the apparatus. The damping device may comprise a field controllable damper that includes a volume of field controllable fluid, which may in turn comprise magnetorheological fluid for example. The rheology of the field controllable fluid is effected during the application of the field.
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Carlson J. David
Chrzan Michael J.
Peuker Thomas
Yanyo Lynn C.
Butler Douglas C.
Lord Corporation
Murphy III Edward F.
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