Compositions – Preservative agents – Anti-corrosion
Patent
1979-10-31
1981-04-21
Lutter, Frank W.
Compositions
Preservative agents
Anti-corrosion
239113, 239414, 422133, B01F 1700, B01F 308, B01J 1300, B05B 1502
Patent
active
042631661
ABSTRACT:
An apparatus is provided for the mixing of a first liquid foaming agent component with compressed air in a mixing chamber to produce a foam. A nozzle for ejecting a second liquid component into the foam is provided downstream of the mixing chamber. The mixing chamber is attached to the downstream side of a valve housing. The valve housing includes a triple plug valve for simultaneously selectively connecting and disconnecting a first liquid component inlet and an air inlet with the mixing chamber and a second liquid component inlet with the nozzle. First port means, connecting the air inlet downstream of the triple plug valve, to a plurality of air ejection orifices communicating with the mixing chamber is provided within the valve housing. Air control valve means is provided within said first port means for controlling the amount of air flowing to said mixing chamber. Second port means is provided, within said valve housing, for communicating the air inlet port upstream of said triple plug valve with a fluid passage for the second liquid component at a point downstream of said triple plug valve, to provide purge air to the nozzle. A second valve means is provided in said second port means for controlling the flow of purge air to the nozzle.
REFERENCES:
patent: 2388508 (1945-11-01), Timpson
patent: 3256067 (1966-06-01), Shriver et al.
patent: 3318530 (1967-05-01), Rhodes
patent: 3417923 (1968-12-01), Carlson
patent: 3434805 (1969-03-01), Bar
patent: 3690556 (1972-09-01), McCain
patent: 4021386 (1977-05-01), Lindstrom
patent: 4060572 (1977-11-01), Widmann
patent: 4117551 (1978-09-01), Brooks et al.
patent: 4121906 (1978-10-01), Oldham
patent: 4137048 (1979-01-01), Steinman
Entek Corporation
Lutter Frank W.
Phillips Roger F.
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