MOTOR WITH A PLURALITY OF PERMANENT MAGENETS AT EACH STATOR POLE
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United States of America Patent
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Issued Date -
N/A
app pub date -
Mar 18, 2015
filing date -
Oct 13, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A permanent magnet electric motor has a stator and a rotor. The stator includes a stator housing with at least a North pole and a South pole, each pole including permanent magnets of the same polarity including two outer magnets arranged at pole tips and at least one inner magnet disposed therebetween. The outer magnets have greater thickness than the inner magnet to provide higher demagnetization resistance than the at least one inner magnet within each pole. The magnets are affixed to an inner surface of the stator housing, and the inner surface of the stator housing include a projected surface within each pole to which the inner magnet is affixed so that surfaces of the inner and outer magnets facing a center of the stator housing are arranged at a same distance from the center of the stator housing.
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