Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1992-09-02
1994-02-22
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15353, 4171992, A47L 700
Patent
active
052875903
ABSTRACT:
A wet vacuum/extractor having a first cleaning solution line which extends from a cleaning solution tank to a non-self-priming pump and a second cleaning solution line which extends from the pump to a normally closed fluid flow control valve which controls the flow of liquid on to the cleaning head. The vacuum priming system of the present invention opens the second cleaning solution line to the vacuum generated between the cleaning head and the vacuum fan. This vacuum beyond the output of the pump draws solution from the solution tank into the operating pump. Once the pump is thus primed, the second cleaning solution line is closed to the vacuum and the pump now pumps the solution past the closed fluid flow control valve to the cleaning head.
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Miner Jonathan L.
Norwood Richard L.
Yonkers Robert A.
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