METHOD AND APPARATUS FOR SUSPENSION DAMPING
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United States of America Patent
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Issued Date -
Aug 20, 2015
app pub date -
Feb 15, 2014
filing date -
Feb 15, 2014
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Abstract
A load-carrying spring is coupled between a sprung element and an unsprung element. A magnetic lead screw damper is coupled between the sprung element and the unsprung element. The magnetic lead screw damper includes a magnetic lead screw arranged in series with an electric motor, and the magnetic lead screw includes a rotor screw and a stator nut. The rotor screw includes a rotor magnet assembly forming first helical magnetic threads, and is rotatably coupled to the electric motor. The stator nut includes a stator magnet assembly forming second helical magnetic threads, and a stator frame. The stator magnet assembly includes an axial length equal to an axial length of the rotor magnet assembly. Rotation of the rotor screw effects linear translation of the stator nut by interaction of the first and second helical magnetic threads.
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