Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1976-10-07
1978-11-07
Moore, Christopher K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15328, 15339, A47L 534
Patent
active
041238184
ABSTRACT:
A low-cost accessory for a conventional tank-type wet-pickup vacuum cleaner which converts such a vacuum cleaner into a self-contained hot water extraction type of carpet shampooer and floor cleaner suitable for use by homeowners. The accessory includes a reservoir which attaches compactly to the vacuum cleaner. The reservoir is intended to be filled with a cleaning solution of hot water and detergent and includes means for feeding the cleaning solution to a spray nozzle located behind the vacuum pickup nozzle. A hand-controlled valve permits the operator to dispense cleaning solution and to interrupt the flow of solution while vacuuming the wetted floor or carpet. In a preferred embodiment the reservoir is a pressurizable toroidal shaped tank which fits around the vacuum cleaner. The reservoir is pressurized by an integral manual air pump. An indicating pressure relief valve provides a measure of air pressure and prevents over pressurization of the reservoir. The air pressure forces cleaning solution to the spray nozzle. In a modified embodiment, a motor driven pump assembly is employed to deliver detergent fluid to the point of use thus, eliminating the need for pressurization of the reservoir.
REFERENCES:
patent: 2531370 (1950-11-01), Thompson
patent: 2978719 (1961-04-01), Arones
patent: 3431582 (1969-03-01), Grave
patent: 3507309 (1970-04-01), Johnson
patent: 3720977 (1973-03-01), Brycki
patent: 3919729 (1975-11-01), Cannan
patent: 3942217 (1976-03-01), Bates
patent: 3975790 (1976-08-01), Patterson
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