Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1998-01-06
2000-01-04
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15352, A47L 700
Patent
active
060095962
ABSTRACT:
A vacuum cleaner has an electric motor driving an air impeller for creating suction and a pump which draws liquid material through an inlet tube from the bottom of a tank and expels it from the tank. The vacuum cleaner also includes a mechanical shut-off and override assembly that automatically shuts off the motor if the liquid level in the tank gets too high. The user, however, can mechanically override this automatic shut-off in order to continue pumping liquid out of the tank. A priming apparatus is disposed in the tank in fluid communication with the pump, and a valve is selectively actuable to establish a pressure differential across liquid in the priming apparatus to thereby prime the pump.
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Berfield Robert C.
Buss Randy L.
Moore Chris K.
Shop Vac Corporation
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