Fluid flow control device having an obturating membrane deformab

Details Fluid flow control device having an obturating membrane deformab Fluid flow control device having an obturating membrane deformab

1992-02-12

1993-09-14

Rosenthal, Arnold

Valves and valve actuation

Flexible actuator

251331, 454 73, 454333, F16K 712, F16K 3146, B60H 100

Patent

active

052441849

ABSTRACT:
A fluid flow control device comprises a duct having an inlet aperture and an obturating member, which is mounted in the duct and movable by an actuating member between a first position in which it closes the duct and a second position in which the duct is fully open. The control device comprises a flexible membrane which is fixed around its periphery to the annular wall of the duct. The membrane is arranged to adopt a closing position in which its central region closes off the inlet aperture within the duct, and an open position in which its central region is spaced away from the inlet opening so that the fluid can pass through the latter and through further apertures formed in an annular region of the membrane which join its central region to its periphery.

REFERENCES:
patent: 1793396 (1931-02-01), Haentjens
patent: 2934902 (1960-05-01), Anderson
patent: 3138304 (1964-06-01), Raehs
patent: 3661468 (1972-05-01), Schwartzman

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