Flexible bladder apparatus for fluid flow control

Details Flexible bladder apparatus for fluid flow control Flexible bladder apparatus for fluid flow control

2006-12-05

2006-12-05

Lee, Kevin (Department: 3753)

Fluid handling

Liquid level responsive or maintaining systems

Barometric

C137S454000, C137S081100, C251S061100

Reexamination Certificate

active

07143781

ABSTRACT:
The present invention provides an apparatus and method for controlling the flow of fluids through a conveyance with a hydraulic valve including a flexible portion. The flexible portion is positioned in the conveyance so that fluid enters the membrane from an upper containment space and the expansion of the flexible portion causes the valve to restrict or block the flow of fluid being controlled through the conveyance.

REFERENCES:
patent: 4182371 (1980-01-01), Moore
patent: 4321939 (1982-03-01), Fenwick
patent: 4494345 (1985-01-01), Peterson
patent: 6053191 (2000-04-01), Hussey
patent: 6616120 (2003-09-01), Barzuza et al.

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