Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1999-06-01
2000-09-12
Till, Terrence R.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
153275, 15347, 55488, A47L 912
Patent
active
061158798
ABSTRACT:
The vacuum cleaner includes a hollow canister, one end of which is closed by a removable cap to permit removal of debris from within the interior. The canister is separated into two compartments, one defined by the first end and a hollow rigid conical filter disposed in the interior. The filter has a base adjacent to the inner wall throughout its extent and tapers toward the second end of the canister. The filter further has openings too small to allow debris such as cigarette and cigar butts, excrement of animals and birds and the like to pass therethrough but large enough to allow smaller debris to pass. A second compartment is defined by the filter and a relatively flat filter having openings smaller than that of the conical filter. Both filters extend across the interior such that all air which travels through the interior must pass through the filters. An intake hose admits debris-laden air into the first compartment and an exhaust discharges air from the second compartment. Suction means causes air to flow from the inlet of the tube, through the interior and to exit through the exhaust.
REFERENCES:
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patent: 2910717 (1959-11-01), Raymond
patent: 4185355 (1980-01-01), Williams
patent: 4297116 (1981-10-01), Cusick
patent: 5040263 (1991-08-01), Guhne et al.
patent: 5661873 (1997-09-01), Karet
patent: 5771531 (1998-06-01), Swartz
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