Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2008-01-22
2008-01-22
Patidar, Jay M (Department: 2862)
Electricity: measuring and testing
Magnetic
Displacement
C324S207240, C336S130000, C340S870360, C318S660000
Reexamination Certificate
active
11358905
ABSTRACT:
A position sensor comprising a primary winding (26) for generating a magnetic flux, a first secondary winding (24.1) the number of turns of which increases in one direction, a second secondary winding (24.2) the number of turns of which increases in the opposite direction to that of the first secondary winding. Both secondary windings (24.1, 24.2) are subjected to the magnetic flux generated by the primary winding (26) whereby voltages are induced in the secondary windings. The sensor further comprises an element movable with respect to the secondary windings. The element is of a magnetic or conductive material and distorts, in its vicinity, the magnetic flux generated by the primary winding (26). By providing third and fourth secondary windings at right angles to the first and secondary windings it is possible to detect position in two dimensions.
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Dalina Law Group P.C.
Patidar Jay M
University of Cape Town
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