Signals and indicators – Alarms – Reeled material end
Patent
1974-10-15
1976-06-01
Goldstein, Herbert
Signals and indicators
Alarms
Reeled material end
G08B 302
Patent
active
039601064
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.
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patent: 3374856 (1968-03-01), Wirt
patent: 3669214 (1972-06-01), Matsuura et al.
patent: 3834486 (1974-09-01), Tsuge et al.
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