Sun roof drive device
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United States of America Patent
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Nov 18, 2008
Grant Date -
Aug 9, 2007
app pub date -
Feb 4, 2005
filing date -
Feb 9, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
The sun roof drive device opens and closes a vehicle sun roof by a DC brushless motor, which is driven by rectangular waves when high torque is required at a low rotational speed and which is driven by sinusoidal waves or pseudo-sinusoidal waves when low noise is required.
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Cited Art Landscape
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