Inductor devices – With closed coil or conductor member – Movable with respect to another coil
Patent
1981-12-10
1985-03-26
Kozma, Thomas J.
Inductor devices
With closed coil or conductor member
Movable with respect to another coil
336130, H01F 2102
Patent
active
045076383
ABSTRACT:
A series of rotary sensors are disclosed. Each sensor consists of a drive coil which is a planar coil configuration separated from a sensing coil which is parallel to the drive coil. Interposed between the drive and sensing coils is a rotatable plate fabricated from a material capable of blocking a magnetic field induced in a drive coil from reaching or activating the sensing coil. The rotatable plate is shaped to allow predetermined amounts of flux to couple from the drive coil to the sensing coil as the plate is rotated. The shape of the plate therefore determines the signal provided at the sensing coil to enable one to provide such signals indicative of the angular movement of the plate between wide limits as from zero to 360.degree.. Other configurations utilizing a plurality of drive and sense coils and special shaped plates provide sine and cosine outputs as well as enable one to determine the quadrant of operation.
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Kozma Thomas J.
Plevy Arthur L.
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