Method for cleaning surfaces
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United States of America Patent
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Jun 27, 2017
Grant Date -
N/A
app pub date -
Feb 5, 2013
filing date -
Nov 5, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cleaning apparatus and method for cleaning generally upright surfaces, walls and windows of a building has a frame rotatably supporting one or more brushes adapted to engage the upright surface of a building. A davit supported on top of the building is connected to a cable pendently supporting the frame and brushes. A winch driven with a motor mounted on the frame operably connected to the cable operates to move the frame and brushes relative to the upright surface. A counterforce generator mounted on the frame establishes a force on the frame and brushes that maintains the brushes in effective continuous engagement with the upright surface during cleaning thereof.
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International Classification(s)
Cited Art Landscape
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