Surface cleaning apparatus with cleaning fluid supply
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United States of America Patent
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Aug 31, 2010
Grant Date -
Dec 28, 2006
app pub date -
Feb 16, 2006
filing date -
Feb 17, 2005
priority date (Note) -
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Abstract
A surface cleaning apparatus comprises a fluid delivery system including a supply of cleaning fluid and a fluid recovery system for drawing dirty cleaning fluid from the surface to be cleaned. The apparatus can comprise a passageway that passes heated motor cooling air in heat exchange with the cleaning fluid to heat the cleaning fluid. The apparatus can further comprise a mixing manifold that mixes first and second cleaning fluids at different concentrations for different cleaning modes. The apparatus can further comprise a fluid valve having a shape memory alloy actuator.
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