Receptacles – Container attachment or adjunct – Pressure relief means
Patent
1989-04-07
1990-08-14
Foster, Jimmy G.
Receptacles
Container attachment or adjunct
Pressure relief means
137398, 222 67, 417 36, 417 40, 417120, B65D 8854
Patent
active
049480103
ABSTRACT:
In a liquid waste collection and disposal apparatus, liquid waste gravity flows to a tank through a check valve equipped inlet line. A vertical guide float within the tank controls the liquid level therein. A two-way tank venting solenoid operated valve supplies gas, under pressure, to the tank for evacuating liquid therein. An electrical circuit connects a source of electrical energy with liquid upper and lower limit magnetic switches disposed in the path of travel of the float for energizing the actuator of the solenoid valve to evacuate the fluid therein through a check valve equipped discharge line in response to the float closing the upper limit switch. When the float reaches the limit of its downward movement, the normally closed lower magnetic switch is opened to interrupt gas pressure to the tank.
REFERENCES:
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patent: 1582855 (1926-04-01), Peter
patent: 2260312 (1941-10-01), Gruman
patent: 2564548 (1951-08-01), Sjoberg
patent: 2626740 (1953-01-01), Levy
patent: 2956581 (1960-10-01), Pearson
patent: 3255922 (1966-06-01), Socol et al.
patent: 3279001 (1966-10-01), Lenz
patent: 4321017 (1982-03-01), Gottliebson
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