Magnetorheological fluid devices
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United States of America Patent
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Feb 8, 1994
Grant Date -
N/A
app pub date -
Jun 18, 1992
filing date -
Jun 18, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This invention relates to sealless designs of magnetorheological fluid dampers. With these sealless designs a piston rod extends above and below a piston head within a cylindrical housing and has frustoconical elastomer elements attached to and between the rod and housing to allow translation of the piston head and rod. The piston head has a coil contained radially therein that produces magnetic flux in and around the piston. The advantages of utilizing an MR fluid according to the invention include magnetic fields which are easily produced by low voltage electromagnetic coils, damping effects which are velocity independent, and higher yield strength obtained by the MR fluid capable of generating greater damping forces.
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