Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2005-08-30
2005-08-30
Snider, Theresa T. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S371000, C015S392000
Reexamination Certificate
active
06934993
ABSTRACT:
An extraction cleaning machine has a solution dispensing system and a recovery system for applying a cleaning solution to a surface and recovering the solution from the surface, and an agitation brush assembly for agitating the surface. The agitation brush assembly can include friction-type or other dampers for reducing brush bounce, and biasing elements for maintaining a constant downward force on the brush. The brush can have multiple helical rows of tufted bristles, preferably at least four rows, or can comprise a continuous helix of bristles in a twisted-wire spindle. The brush can further have a removable fabric cover for mounting over a bristle brush for contacting a surface being cleaned. The brush assembly can function in an upright extraction cleaning machine with or without an above floor cleaning tool, a hand-held extractor, or a hand-held attachment to a canister extractor or an above floor tool in upright extractor.
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Hansen Eric J.
Huffman Eric C.
Kasper Gary A.
Reed Charles A.
Rider Stefan G.
Bissell Homecare Inc.
McGarry Bair PC
Snider Theresa T.
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