Suction brush for use in vacuum cleaner and method of adjusting the height thereof
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United States of America Patent
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Apr 12, 2011
Grant Date -
Mar 12, 2009
app pub date -
Jan 30, 2008
filing date -
Sep 6, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A suction brush for use in a vacuum cleaner and a method of adjusting the height thereof. The suction brush includes a brush casing having a suction opening to draw in air and a main air passage through which the air drawn in through the suction opening flows, a detecting unit disposed to the brush casing to detect a kind of a surface to be cleaned, a lifting unit to move a bottom surface of the brush casing close to and away from the surface to be cleaned, and a driving unit operated in response to a signal generated from the detecting unit and moving the lifting unit using air pressure generated by the air flowing through the main air passage.
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