Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2005-01-04
2005-01-04
Till, Terrence R. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C118S207000
Reexamination Certificate
active
06836928
ABSTRACT:
A carpet extractor includes a solution distributor, such as a spray bar90, which delivers cleaning solution to a floor surface. A housing10selectively receives a recovery tank22for collecting dirty cleaning solution from the floor. A first tank14for concentrated cleaning fluid and a second tank15for clean water supply cleaning fluid and water to a reciprocating pump420through first and second fluid lines412, 410. The pump includes a piston428, which reciprocates between first and second ends of a cylindrical bore430. A fluid line432interconnects the first and second fluid lines. As the pump reciprocates, a portion of the water is drawn into the interconnecting line during a downward stroke, where it mixes with the entering cleaning solution. As the pump moves on its upward stroke, the mixture is drawn back into the water line and is pushed onward by the pump toward the spray bar with each successive downward stroke.
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Cipolla Mark E.
Kalman Jeffrey M.
Latimer Brett
Salo Robert A.
Saunders Craig M.
Fay Sharpe Fagan Minnich & McKee LLP
Royal Appliance Mfg. Co.
Till Terrence R.
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