Valves and valve actuation – Fluid actuated or retarded – Flexible wall expansible chamber reciprocating valve actuator
Patent
1982-07-22
1984-12-04
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
Flexible wall expansible chamber reciprocating valve actuator
92 6D, 92 99, F16K 31365
Patent
active
044860013
ABSTRACT:
An air actuated adhesive application control valve using a resilient diaphragm to control reciprocation of the valve stem. Unsupported portions of the diaphragm are supported by a layer of the incompressible adhesive trapped within a fluid cavity adjacent one major surface of the diaphragm. Adhesive is permitted to enter the fluid cavity when the valve is in the closed position, but is prevented from escaping therefrom by a separate valve mechanism carried by the valve stem when the valve is in the opened position. The second valve element also serves as a stop to limit travel of the reciprocating stem, thereby controlling the valve opening clearance.
REFERENCES:
patent: 268594 (1882-12-01), Aikman et al.
Neckel Edmund
Santefort Richard A.
Schwadron Martin P.
Starsiak Jr. John S.
Valco Cincinnati, Inc.
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