Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent
1986-11-21
1988-04-26
Scott, Samuel
Valves and valve actuation
Fluid actuated or retarded
Piston type expansible chamber reciprocating valve actuator
251147, 251154, 222195, 366101, F16K 31383
Patent
active
047399643
ABSTRACT:
A controllable valve adapted to be fixed in the wall of a storage hopper containing particulate materials and operable to dispense an air blast into the interiors of the hopper to loosen the materials in the region of the valve.
REFERENCES:
patent: 3949963 (1976-04-01), Aoki
patent: 4261389 (1981-04-01), Hager et al.
Kamen Noah
Scott Samuel
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