Gas and liquid contact apparatus – Fluid distribution – Pumping
Patent
1986-01-27
1987-03-10
Miles, Tim
Gas and liquid contact apparatus
Fluid distribution
Pumping
261 82, 261DIG74, 261 644, B01F 304
Patent
active
046489975
ABSTRACT:
This is a device for injecting air into a water supply under pressure in a closed system. It consists of two sliding pistons inside a closed housing. The two pistons are connected to each other by a connecting rod. They are positioned so that they slide alternately toward one end of the housing and then toward the other end. They are propelled in one direction by water pressure entering the housing through an opening from an outside source. They are propelled in the opposite direction by a coil spring. This device can employ any one of several different means to increase and decrease the water pressure on one piston thereby alternately causing the coil spring to be compressed and then allowed to expand. This causes the second piston to draw air into the housing through a check valve when the coil spring is being depressed and then allows the air to pass through a check into the path of the flowing water when the coil spring is expanding.
REFERENCES:
patent: 980447 (1911-01-01), Smith
patent: 2604310 (1952-07-01), Brown
patent: 3080154 (1963-03-01), Tanner
patent: 3109873 (1963-11-01), Hotchkiss
patent: 3756576 (1973-09-01), Tremolada
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