Self-contained, closed-loop, hard surface and carpet cleaning ap

Details Self-contained, closed-loop, hard surface and carpet cleaning ap Self-contained, closed-loop, hard surface and carpet cleaning ap

1997-01-13

1999-09-07

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15353, A47L 700

Patent

active

059467690

ABSTRACT:
A self-contained, closed-loop, hard surface and carpet cleaning apparatus includes a carpet cleaner with a power unit and a vacuum tank. A cleaning tool is connected to the power unit via a supply hose, and to the vacuum tank via a return hose. At the operator's business location, the vacuum tank is initially filled with a supply of fresh water passed through a water softening unit. At the job site, the water is pumped from the vacuum tank to a re-circulating tank through a series of filters. Ozone is added to the re-circulating tank to cleanse the water. The water is then passed through charcoal filters, and to the power unit. A cleaning agent is added to the water by the power unit. The water is also heated, pressurized, and delivered by the power unit to the cleaning tool via the supply hose. After the water is sprayed onto a surface being cleaned, it is immediately extracted and drawn back to the vacuum tank through the return hose. A vacuum gravity separation unit is connected along the return hose for extracting solid particles, such as sand and gravel, from the waste water before it is added back to the remaining fresh water in the vacuum tank. The waste water is thus clean enough to be reused in a close-loop.

REFERENCES:
patent: 2972769 (1961-02-01), Keating et al.
patent: 3431582 (1969-03-01), Grave
patent: 3605169 (1971-09-01), Howerin et al.
patent: 4112538 (1978-09-01), Bates
patent: 4158248 (1979-06-01), Palmer
patent: 4164055 (1979-08-01), Townsend
patent: 4464810 (1984-08-01), Karpanty
patent: 4696075 (1987-09-01), Grave
patent: 5210902 (1993-05-01), Lee et al.
patent: 5493754 (1996-02-01), Gurstein et al.

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