Method for cleaning surfaces
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United States of America Patent
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May 17, 2016
Grant Date -
Dec 24, 2015
app pub date -
Aug 28, 2015
filing date -
Nov 15, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An apparatus and method for cleaning a surface. The apparatus includes a frame having wheels and a handle extending outwardly therefrom. A disc plate assembly is mounted on the frame for rotation about a first vertical axis and a nozzle assembly is mounted on the disc plate assembly for rotation about a second vertical axis. The disc plate assembly is rotated at a lower speed than the nozzle assembly. Separate pneumatically-operable motors drive the wheels, the disc plate assembly and nozzle assembly. A skirt extends downwardly from the frame and outwardly from nozzles on the nozzle assembly. The nozzles may be raised or lowered relative to the surface to be cleaned. Fluid is delivered from a fluid source to the nozzles and a vacuum port is provided on the frame to enable dirty fluid to be removed from a chamber bounded by the skirt.
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