Motor control for a vacuum cleaner
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United States of America Patent
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Jan 24, 2012
Grant Date -
Jan 13, 2011
app pub date -
Sep 22, 2010
filing date -
Jan 5, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A vacuum cleaner includes a nozzle, an air-filtering dirt receptacle, and a motor. A fan of the vacuum cleaner is configured to be driven by the motor to drive a flow of air that carries dirt from a surface through the nozzle and into the receptacle to clean the surface. A controller of the vacuum cleaner provides a notification to a user of the vacuum cleaner indicative of an excessive amount of dirt in the receptacle when current drawn by the motor drops below a threshold value.
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