Remote readout device for a pump

Details Remote readout device for a pump Remote readout device for a pump

1978-01-24

1979-07-24

Rolla, Joseph J.

Dispensing

With recorder, register, indicator, signal or exhibitor

222 76, B67D 504

Patent

active

041620275

ABSTRACT:
An improved device for relaying information, such as quantity transferred, from inside the explosive environment of a flammable liquids pump to a remote location. A mechanical record of the information is converted to electrical pulses by light emitting diode and light sensitive transistor. A barrier, through which the pulses are transferred out of the explosive environment, contains resistors which prevent an explosive spark.

REFERENCES:
patent: 2510093 (1950-06-01), Ferguson et al.
patent: 3053414 (1962-09-01), Rapisarda
patent: 3084832 (1963-04-01), Rapisarda
patent: 3236415 (1966-02-01), Parker
patent: 3469078 (1969-09-01), Binford
patent: 3751642 (1973-08-01), Todd et al.
patent: 3927800 (1975-12-01), Zinsmeyer et al.

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