G - Physics – 05 – D
Patent
G - Physics
05
D
137/34
G05D 7/00 (2006.01) G05D 7/01 (2006.01)
Patent
CA 1065736
Abstract of the Disclosure A fluid flow-rate control device is disclosed which has a housing; an elastic stretchable membrane dividing the interior of the housing into a first and a second chamber; an inlet port of the housing leading to a fluid source and communicating with the first chamber; and an outlet port of the housing communicating with the second chamber. The first and second chambers are in fluid communication via at least one passageway the dimensions of which remain unchanged during operation, and the membrane is fixedly held and positioned between the chambers so that when the membrane is exposed to a fluid pressure differential, it is adapted to be stretched and a portion thereof to move, solely by virtue of its elasticity, between positions closer to the outlet port to restrict the rate of flow therethrough, and positions further away from the outlet port to increase the rate of fluid flow there- through. Thus, the flow of fluid through the outlet port is controlled at a constant rate by the membrane, despite variations in the fluid pressure at, at least, one of the ports.
288951
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