Electromagnetic motor
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United States of America Patent
Stats
-
Feb 18, 1986
Grant Date -
N/A
app pub date -
Jan 29, 1981
filing date -
Feb 6, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The motor comprises a stator formed in one piece and having an opening formed therein, a yoke of high magnetic permeability and a coil wound round the yoke. The rotor comprises a shaft and a bar magnet. The opening has a first part all points of which are disposed at a first distance from the rotation axis of the rotor and a second part the points of which are disposed at second distances, different from the first distance, from that rotation axis. The invention is applicable particularly to stepping motors having a low consumption of electric current, e.g. for time pieces.
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