Brushless motor
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United States of America Patent
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-
Mar 31, 1992
Issued Date -
N/A
app pub date -
Nov 2, 1989
filing date -
Dec 19, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brushless motor includes a rotor having a multipolar magnet with n-number of magnetic poles and a stator yoke having a plurality of field coils disposed at a position opposing the multipolar magnet. The stator yoke of the brushless motor is provided with a magnetic-resistance varying portion to improve the smoothness of rotation of the rotor.
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