Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1996-11-25
1999-10-19
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15352, A47L 700
Patent
active
059667753
ABSTRACT:
A vacuum cleaner has an electric motor driving an air impeller for creating suction and a pump impeller which draws liquid material through an inlet tube from the bottom of the tank and expels it from the tank. A removable plenum having openings separates the tank from the air impeller. A baffle is movable by a user to cover the openings to create a low pressure area above the plenum with respect to the pressure in the tank. The pump is located above the plenum and has an aperture in the pump housing. When the baffle covers the openings in the plenum, the air pressure differential drives the liquid material through the inlet tube into the pump housing thereby priming the pump.
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Moore Chris K.
Shop Vac Corporation
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