Device for establishing and breaking a fluid communication

Details Device for establishing and breaking a fluid communication Device for establishing and breaking a fluid communication

1976-09-30

1977-09-20

Smith, Robert I.

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

277 343, 285 97, F16K 31126

Patent

active

040492338

ABSTRACT:
First and second walls form first and second openings, respectively, which face each other in spaced, substantially coaxial relation. A device surrounding the first opening, for establishing and breaking fluid communication between the openings, comprises an inflatable ring which, when inflated, seals against the second wall around the second opening to complete a fluid flow path between the openings, and a circular body located in said flow path coaxially of the ring. When deflated, the ring bears sealingly against said body to prevent flow through the first opening.

REFERENCES:
patent: 2231282 (1941-02-01), Norris
patent: 3731939 (1973-05-01), Wright et al.
patent: 3810665 (1974-05-01), Rodgers
patent: 3881686 (1975-05-01), Hirmann
patent: 3942756 (1976-03-01), Brumm

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