Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1999-02-05
2000-10-24
Till, Terrence R.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15322, A47L 904
Patent
active
061347469
ABSTRACT:
A compact, hand held carpet and upholstery extractor nozzle is provided having a pair of air turbine powered vertical axis rotary scrub brushes located adjacent the extractor nozzle. The turbine has at least one ambient air inlet and an outlet that communicates with a suction tube extending from the extractor nozzle. A compact gear reduction operatively connects the air turbine to the scrub brushes. A turbine outlet baffle is preferably provided that extends from an upstream edge of the turbine outlet, into the suction tube and over and beyond the turbine outlet to direct air, liquid and debris flowing through the suction tube over and beyond the turbine outlet opening. A downstream end of the baffle is open and suction openings pass through the baffle, for providing fluid communication between the suction tube and the turbine outlet opening. A raised floor is preferably located in the suction tube upstream of the baffle that directs the flow of air, liquid and debris in the suction tube substantially past the suction openings. A shoulder is preferably provided on each side of the baffle that extends generally longitudinally in the suction tube below the suction openings. The upstream ends of these shoulders curve upward until the shoulders are substantially flush with raised floor. With this construction, any drops of liquid adhering to the raised floor and traveling toward the baffle, will adhere to the shoulders and be directed below the suction openings.
REFERENCES:
patent: 1858043 (1932-05-01), Glass
patent: 2000930 (1935-05-01), De Nagy
patent: 3167260 (1965-01-01), Gibbons et al.
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patent: 4589161 (1986-05-01), Kchte et al.
patent: 4733532 (1988-03-01), Prahl et al.
patent: 5333994 (1994-08-01), Doty et al.
patent: 5867864 (1999-02-01), Miller et al.
Barker Douglas C.
Leonatti John A.
Miller Daniel R.
Symensma Kenneth L.
Lowe A. Burgess
The Hoover Company
Till Terrence R.
Watson Bruce P.
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