Fluid flow control device

Details Fluid flow control device Fluid flow control device

A - Human Necessities

61

M

128/80

A61M 5/00 (2006.01) A61M 1/34 (2006.01) B01D 61/22 (2006.01)

Patent

CA 1173710

FLUID FLOW CONTROL DEVICE ABSTRACT OF THE DISCLOSURE A fluid flow control device comprises first, second, and third fluid pathways. The first and second pathways are adapted for communication with separate sources of pressurized fluid. The third pathway is coupled in flow communication with the first pathway and includes a flexible wall which forms an interface with a portion of the second pathway. The flexible wall meters the flow communication between the first and third path- ways in response to fluid pressure fluctuations in the second pathway. The fluid pressure in the first pathway is thereby elevated until substantial equilibrium with the fluid pressure in the second pathway occurs, and is thereafter continuously adjusted in response to subsequent fluctuations of fluid pressure in the second pathway to maintain this condition of substantial equilibrium.

400066

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