Electric motor with tachometer signal generator
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United States of America Patent
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-
Feb 10, 1998
Grant Date -
N/A
app pub date -
Jun 17, 1996
filing date -
Jun 17, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A permanent magnet electric motor including a rotor having an annular arrangement of field magnets for rotation around an axis relative to a stator. An annular FG magnet arrangement affixed to an end of the rotor cooperates with an adjacent FG coil to produce a signal indicative of the rotor speed. A shunt washer of magnetically permeable material is interposed between the field magnet arrangement and the FG magnet arrangement.
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Cited Art Landscape
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