Electric motor having electrostatic shield arrangement
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United States of America Patent
Stats
-
Apr 13, 2004
Grant Date -
Jun 28, 2001
app pub date -
Dec 22, 2000
filing date -
Jan 16, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electromechanical machine includes a stator fixed with respect to a housing structure and a rotor fixed with respect to a driven shaft. The stator includes a magnetically permeable core having a plurality of parallel winding slots containing conductive windings. Coilheads are located at opposite axial ends of the magnetically permeable core where the windings turn to extend down a parallel winding slot. The motor is equipped with an electrostatic shield arrangement to reduce capacitive coupling between the stator and rotor during operation. The shield arrangement comprises a grounded conductive layer separated from the conductive windings of the stator by an insulative layer of cured resin material. Preferably, the conductive layer may be formed of a conductive paint.
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