Eddy current apparatus
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United States of America Patent
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-
Aug 24, 1999
Grant Date -
N/A
app pub date -
Dec 18, 1997
filing date -
Dec 20, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The rotor or the stator of the apparatus has inductor coils whose respective axes are parallel to the axis of rotation and distributed at regular intervals along a circle centred on the axis of rotation. Each coil is traversed by a cylindrical pole core, one end of which is provided with a pole shoe of larger cross-section. An armature disc travels past these pole shoes with interposition of a gap. In relation to the direction of travel of the armature disc, each pole shoe offers an area which is larger in front than to the rear of the radial plane passing through the axis of rotation and through the axis of the corresponding coil. Each pole shoe has a rear edge of convex general shape in a plane parallel to the armature disc.
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