Belt drive system with outer rotor motor
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United States of America Patent
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Apr 22, 2008
Grant Date -
Oct 19, 2006
app pub date -
May 18, 2006
filing date -
Oct 7, 2003
priority date (Note) -
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Abstract
An outer rotor motor having a tubular shaft for maximum motor cooling effect. Coolant may flow through coolant channels of the shaft and the motor in various configurations to carry away the heat. A thermally conductive component may be inserted into the hollow shaft under the stator section to optimize the airflow and cooling. Physical construction of the motor and control algorithms may further enhance motor performance with appropriate sensors. A compact, smooth, and cool operating motor may thus be achieved for applications such as treadmills or other belt drive systems.
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