Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1977-01-27
1978-08-29
Moore, Christopher K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
165 51, A47L 1134
Patent
active
041093402
ABSTRACT:
A carpet cleaning machine mounted on a truck or van for transport to the work site. The main power for the machine is developed by an internal combustion engine which drives an injection pump, a vacuum pump, and a sump pump. A reservoir maintains and stores a supply of cooling water-cleaning fluid for removing heat generated by the engine. Coolant-cleaning fluid is drawn from the engine by the injection pump for transmission to the carpet cleaning injection nozzles. The coolant may be further heated as it is drawn from the engine by means of a heat exchanger which removes heat from the engine exhaust gases. The coolant may be further heated by deliberately employing an inefficient injection pump. The vacuum pump draws water from the carpet through a filter or sump which may be discharged through the sump pump when a predetermined coolant level is achieved in the sump. Make-up water may be delivered to the reservoir by a float-actuated valve which directs the make-up water through a venturi operative to inject a cleaning agent or solvent into the water. When the machine is not actually in carpet cleaning use, a temperature actuated valve may deliver coolant from the reservoir directly to the sump pump for discharge, thus preventing overheating of the engine.
REFERENCES:
patent: 2555822 (1951-06-01), Smith
patent: 2916761 (1959-12-01), Oberg
patent: 3094131 (1963-06-01), Williams
patent: 3341081 (1967-09-01), King
McGuire J. B.
Moore Christopher K.
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