Compositions – Fluent dielectric – Metal- or insoluble component-containing; e.g. – slurry,...
Reexamination Certificate
2005-05-23
2008-09-09
Reifsnyder, David A (Department: 1797)
Compositions
Fluent dielectric
Metal- or insoluble component-containing; e.g., slurry,...
C623S024000, C414S004000, C252S06251C, C252S062520, C252S570000, C188S267200
Reexamination Certificate
active
07422709
ABSTRACT:
An electromagnetic rheological (“EMR”) fluid (18) broadly includes a conducting medium (22) and a plurality of micronparticles (24) suspended in the medium (22). Each of the micronparticles (24) includes a magnetically permeable core (26), an electrically insulating coating (28) surrounding the core (26), and a conductive winding (30) at least partially wound around the core (26) so that the coating (28) is disposed between the winding (30) and the core (26). An apparatus (10) constructed in accordance with a preferred embodiment of the present invention broadly includes a deformable membrane (12), a pair of polar opposed plates (14and16) coupled to the membrane (12), the EMR fluid (18) filling the membrane (12) and being in communication with a current source (20). Current flowing through adjacent windings (30) induces magnetic fields in the corresponding micronparticles (24) that mutually draw the adjacent micronparticles (30) causing them to move together into a north pole-south pole alignment.
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Hovey & Williams, LLP
Reifsnyder David A
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