Measuring and testing – Volume or rate of flow – Using differential pressure
Patent
1985-07-15
1987-08-25
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Using differential pressure
138 43, 138 45, G01F 122, G01F 140
Patent
active
046884335
ABSTRACT:
A device for sensing fluid flow comprising a housing having an inlet and an outlet and defining a fluid flow channel between the inlet and the outlet, a first member disposed in the fluid flow channel and including at least one rigid portion, and a second member disposed in the fluid flow channel upstream from the first member and including at least one flexible portion, said flexible portion being elastically flexible between an initial position spaced from the rigid portion and with its periphery generally spaced from the periphery of the channel to define a first effective flwo area and a final position adjacent the rigid portion and with its periphery generally spaced from the periphery of the channel to a second effective flow area which exceeds the first effective flow area.
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McGraw-Hill Encyclopedia of Science & Technology 1982, vol. 1, pp. 464-475.
Goldstein Herbert
Pall Corporation
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