Measuring and testing – Volume or rate of flow – By measuring thrust or drag forces
Patent
1983-05-31
1985-01-29
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
By measuring thrust or drag forces
73195, 116275, G01F 128
Patent
active
044958234
ABSTRACT:
A bidirectional fluid flow indicator comprising a housing having a fluid inlet and fluid outlet, first and second separated fluid passageways intermediate said inlet and said outlet, a vane pivotally secured across one of said first channel, a second vane pivotally secured across the opposite end of said second channel, an indicator secured to said vanes for rotation therewith whereby said flow meter indicates the fluid is flowing from said inlet toward said outlet when said second vane is displaced and indicates fluid flow from said outlet toward said inlet when said first vane is pivotally displaced by the fluid flow.
REFERENCES:
patent: 742099 (1903-10-01), Thompson
patent: 2725550 (1955-11-01), Prior
patent: 3910114 (1975-10-01), Rosaen
patent: 4073189 (1978-02-01), Draper
Ruehl Charles A.
Universal Filters, Inc.
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