Valves and valve actuation – Fluid actuated or retarded – Fluid and non-fluid actuators
Patent
1975-04-23
1977-07-19
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
Fluid and non-fluid actuators
251319, 251324, F16K 31122, F16K 3160, F16K 31143
Patent
active
040364674
ABSTRACT:
A valve which may be manually operated between an on and off position and in addition includes a high pressure shut-off mechanism which is responsive to an external pressure. The valve comprises a housing having a through bore, a transverse fluid inlet bore which intersects the through bore, and a transverse fluid outlet bore which intersects the through bore and is axially displaced from the fluid inlet bore. A control shuttle is disposed in the through bore and is manually movable between a first position and a second position in the through bore so that in the first position the control shuttle permits fluid communication between the inlet and the outlet bore whereas in the second position the control shuttle obstructs fluid communication between the inlet and outlet bore. In addition a hydraulic actuator having a piston is disposed in the through bore axially spaced from the control shuttle and is responsive to external and internal hydraulic pressure so that when the external hydraulic pressure exceeds a predetermined value, the piston engages the control shuttle and moves the control shuttle from its first position to its second position thus stopping the fluid communication from the inlet and the outlet bores.
REFERENCES:
patent: 1065285 (1913-06-01), Walker, Jr.
patent: 1181144 (1916-05-01), LaPorte
patent: 1516011 (1924-11-01), Heath
patent: 1586695 (1926-06-01), Petersen
patent: 2496286 (1950-02-01), Goldman
patent: 2633098 (1953-03-01), Ellis
patent: 2809799 (1957-10-01), Cunningham, Jr.
patent: 3049331 (1962-08-01), Quesinberry
patent: 3384110 (1968-05-01), Wiley
Schwadron Martin P.
Walton G. L.
Westran Corporation
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