Measuring and testing – Volume or rate of flow – Thermal type
Patent
1975-09-17
1977-02-08
Queisser, Richard C.
Measuring and testing
Volume or rate of flow
Thermal type
G01F 122
Patent
active
040066347
ABSTRACT:
A flow meter includes a variable area obstruction mounted in a conduit and a differential pressure transducer having its two ports mounted on opposite sides of the obstruction in fluid communication with the fluid flowing through the conduit. The variable area obstruction is formed of one or more flexible leaves which extend into the flow stream and are deflectable under the influence of fluid pressure, such that an increased flow rate increases the deflection of the leaves and decreases the area of the obstruction.
REFERENCES:
patent: 2035472 (1936-03-01), Hammond
patent: 2873104 (1959-02-01), Horwood
patent: 2989866 (1961-06-01), Widell et al.
patent: 3403556 (1968-10-01), Koester
Billette Richard J.
Zias Arthur R.
Beauchamp John P.
National Semiconductor Corporation
Queisser Richard C.
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