Signals and indicators – Alarms – Fluid flow
Patent
1975-02-28
1976-11-23
Goldstein, Herbert
Signals and indicators
Alarms
Fluid flow
15339, 73 28, G08B 2100
Patent
active
039930173
ABSTRACT:
A particle flow monitor mounted on a housing having a passage for carrying moving fluid and particles produces audio signals that are in proportion to the amount of particles moving with the fluid. The monitor has a sensing unit having one or more enclosed chambers or cells closing an open end of the housing. A portion of the sensing unit is exposed to a flow chamber within the housing. Particles that impinge on the portion of the sensing unit produce an audio signal which provides audio information feedback as to the amount of particles moving with the fluid.
REFERENCES:
patent: 1340299 (1920-05-01), Smiley
patent: 1633598 (1927-06-01), McClatchie
patent: 1730528 (1929-10-01), Robbins
patent: 1862582 (1932-06-01), Schlenher
patent: 3200901 (1965-08-01), Basseches
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