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US 5,390,542 AGranted
Membrane for a fluid flow meter
AssigneeMeasurement Technology International
InventorEugene L. O'Rourke
Life of this patent
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Abstract
A fluid flow meter has a housing with a fluid inlet and a fluid outlet and defining therebetween a fluid flow path. The flow meter has a flexible membrane having a inlet end mounted at an inlet region of the fluid flow path and a outlet end mounted at an outlet region of the fluid flow path. The flexible membrane produces undulating motion in response to fluid flow in the fluid flow path. Fluid flow rate is measured by sensing the undulating motion of the membrane. Performance of the meter is enhanced by laminating a layer of material to the membrane.
Claims10
A fluid flow meter, comprising:
- a housing having a fluid inlet and a fluid outlet and defining therebetween a fluid flow path;
- a flexible membrane having an inlet end mounted at an inlet region of the fluid flow path and an outlet end mounted at an outlet region of the fluid flow path, the membrane being designed to produce an undulating motion along an active portion in response to fluid flow in said fluid flow path;
- and
- a device responsive to the undulating motion of the membrane for measuring the fluid flow;
- the membrane having:
- at least a first layer of flexible material laminated to the membrane at the inlet end of the membrane;
- at least a second layer of the flexible material laminated to the membrane at the outlet end of the membrane;
- and
- wherein the first layer of flexible material is longer than the second layer of flexible material.
6 more elements
Dependencies are inferred from the claim text.