Light assembly for use in a conduit

Details Light assembly for use in a conduit Light assembly for use in a conduit

1974-09-09

1976-03-09

Miller, J. D.

Telegraphy

Systems

Printing

317 33SC, 178 68, 178DIG1, H02H 320, H04N 718

Patent

active

039434109

ABSTRACT:
A light assembly for use with apparatus for the inspection of conduits such as underground sewer lines is presented. The light assembly includes a plurality of low energy light sources, and a current interrupting device which interrupts the current to the light sources when the voltage across the light sources exceeds a given voltage.

REFERENCES:
patent: 2371176 (1945-03-01), Kirk et al.
patent: 2849530 (1958-08-01), Fleet
patent: 2971259 (1961-02-01), Hahnau et al.
patent: 3311787 (1967-03-01), Gunderman
patent: 3373341 (1968-03-01), Wattson
patent: 3401338 (1968-09-01), Bolvin
patent: 3544844 (1970-12-01), Pellegrino
patent: 3582713 (1971-06-01), Till
patent: 3715484 (1973-02-01), Latall
patent: 3739089 (1973-06-01), Latall
patent: 3761623 (1973-09-01), Hara et al.
"New Cherne T.V. System" Cherne Industrial Inc. 1972 - Advertising Publication.
Laval/USC Underground Video Survey System Publication Add. 2-5-74.

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