Vacuum pump-out system for wet/dry vacuum cleaner

Details Vacuum pump-out system for wet/dry vacuum cleaner Vacuum pump-out system for wet/dry vacuum cleaner

1987-08-07

1989-06-27

Hornsby, Harvey C.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15353, 55417, 137205, A47L 700

Patent

active

048415952

ABSTRACT:
A wet/dry vacuum cleaner which has a rotatable air directional valve and a piping arrangement whereby the air can be either directed into the tank for pumping out a recovered liquid solution or admitted directly to the tank through an internal flapper valve and expelled around the periphery of the vacuum when functioning as a dry vacuum cleaner.

REFERENCES:
patent: 640349 (1900-01-01), Wright
patent: 2049603 (1936-08-01), Dietenberger
patent: 2623234 (1952-12-01), Brown
patent: 3605786 (1971-04-01), Machin
patent: 3606631 (1971-09-01), Vassh et al.
patent: 3971400 (1976-07-01), Thompson
patent: 4116211 (1978-09-01), Richardson
patent: 4171208 (1979-10-01), Lowder
patent: 4179768 (1979-12-01), Sawyer
patent: 4332041 (1982-07-01), Kristoffersen
patent: 4463474 (1984-08-01), Jacobs
patent: 4506697 (1985-03-01), Marchant
patent: 4553566 (1985-11-01), Barclay et al.

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