Water level indicator having a remote and a local readout displa

Details Water level indicator having a remote and a local readout displa Water level indicator having a remote and a local readout displa

1981-03-23

1983-06-14

Kreitman, Stephen A.

Measuring and testing

Liquid level or depth gauge

With illumination

350171, G01F 2300, G02B 2714

Patent

active

043875947

ABSTRACT:
A water level indicating apparatus (10) has an optical system (22) for establishing an optical signal indicative of water level which signal is split by a beam splitter (18) to transmit the majority of the optical signal to a fibre optic cable (16) and to reflect a part of the signal to a proximately located (13) glass diffuser (14). The cable (16) extends to a matte screen (12) at a remote location (11) to thus provide a remote (11) optical signal as well as local (13) optical signal indication of the water level.

REFERENCES:
patent: 1236347 (1917-08-01), Pierce
patent: 2573006 (1951-10-01), Good
patent: 3505868 (1970-04-01), Goellner
patent: 3602037 (1971-08-01), Neu
patent: 3622786 (1971-11-01), Walker et al.
patent: 3808887 (1974-05-01), Buttriss
patent: 4165915 (1979-07-01), Rau et al.
patent: 4190320 (1980-02-01), Ferro
patent: 4232939 (1980-11-01), Kikuchi
patent: 4243299 (1981-01-01), Gliemeroth et al.
patent: 4283115 (1981-08-01), Fraissl

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