Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
Patent
1982-04-29
1984-07-03
Rosenthal, Arnold
Valves and valve actuation
Fluid actuated or retarded
With mechanical movement between actuator and valve
251144, 74110, F16K 3116
Patent
active
044574860
ABSTRACT:
A discharge control for a storage tank for liquid, such as a gasoline transport tank, with the tank having an outlet port with the control comprising an emergency valve associated with the port, with such emergency valve normally being biased to a closed position, whereby discharge from the tank is prevented. Enclosed or protected valve operating means coacts with the emergency valve and is responsive to air pressure, for overcoming the normal valve closing bias of the emergency valve, wth the valve operating means including a crank comprising an operating lever with a crank case in which the lever is disposed, and with an air operated reciprocal motor unit secured to the crank case for coaction with the lever of the crank upon application of pressurized air to the motor unit, to cause the crank to move the emergency valve to open position. The valve operating means is able to be operated manually in the event of failure of the pressurized air supply.
REFERENCES:
patent: 2159979 (1939-05-01), Parsons
patent: 2600977 (1952-06-01), DeFrees
patent: 2953345 (1960-09-01), Slemmons et al.
patent: 3770011 (1973-11-01), Muehl
patent: 3910551 (1975-10-01), DeFrees
Allegheny Valve Company
Rosenthal Arnold
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