Fluid handling – Systems – With pump
Patent
1981-12-30
1984-03-13
Chambers, A. Michael
Fluid handling
Systems
With pump
137895, 137896, 134100, B08B 300
Patent
active
044361130
ABSTRACT:
Pressure cleaning apparatus (10) comprising a pair of liquid containers at substantially the same level, including a water container (11) and a detergent container (12), a positive displacement pump (14) located below said liquid containers and having an inlet and an outlet, and an aspirator mixer (13) for supplying a mixture of water and detergent to the pump, comprising an outer tube (60) having first and second ends and a lateral inlet connection (42) near the first end, an inner tube (47) projecting into the outer tube in sealed relation to the first end, and having a first end extending past the lateral inlet, piping connecting (41) the second end of the outer tube to the inlet of the pump, connecting (48, 49, 32) the inner tube to the bottom of the detergent container, and connecting (43, 44, 45, 30) the lateral inlet to the bottom of the water container, slow operating check valve mechanism (63, 64, 65) operative to prevent continuous flow of liquid from the water container to the liquid container, and spring bias check valve mechanism (50-58) for preventing flow of detergent into the water container. A second embodiment (80) utilizes another type of mixer (82).
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patent: 3651830 (1972-03-01), Kollmai
patent: 3726297 (1973-10-01), Heimunn et al.
patent: 3773065 (1973-11-01), Matton
patent: 3826279 (1974-07-01), Verschuur
Chambers A. Michael
Sioux Steam Cleaner Corporation
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