Liquid level gauge illuminating system

Details Liquid level gauge illuminating system Liquid level gauge illuminating system

1978-10-23

1980-08-19

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

With illumination

358107, G01F 2302

Patent

active

042177782

ABSTRACT:
A Blackburn-type liquid level gauge which is observed by a TV camera has its frontal display structure illuminated in an area where light is not being transmitted through the gauge by light which is refracted away from the TV camera and reflected back onto the face of the display.

REFERENCES:
patent: 666154 (1901-01-01), Reed
patent: 767486 (1904-08-01), Metten
patent: 984676 (1911-02-01), Johnson
patent: 2024815 (1935-12-01), Blackburn
patent: 2115899 (1938-05-01), Blackburn
patent: 2573006 (1951-10-01), Good
patent: 2782679 (1957-02-01), Brueder
patent: 2949777 (1960-08-01), Jerron
patent: 3053089 (1962-09-01), Neyer

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