Stepping motor with self alignable magnet
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 15, 2000
Grant Date -
N/A
app pub date -
Apr 23, 1998
filing date -
Apr 22, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stepping motor includes a rotor having a shaft and a permanent magnet securely mounted on the shaft. At least one coil wound in a plane interacts with the rotor to activate a magnetic field. An axis of magnetic field generation of the coil is perpendicular to the shaft of the rotor. The stepping motor further includes a metal housing receiving the rotor and the at least one coil. The metal housing has at least one protrusion formed on an inner face thereof to correspond to the at least one coil and attract and align the permanent magnet with the coil when the motor malfunctions.
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