Underwater light assembly with low-water cut-off

Details Underwater light assembly with low-water cut-off Underwater light assembly with low-water cut-off

1978-08-08

1980-08-05

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With load device temperature modifier

Load device circuit controlled by the temperature modifying...

307117, 307118, 315119, 315199, 315309, 340622, 362267, 362276, 362295, 362802, H05B 3702

Patent

active

042164117

ABSTRACT:
A wet-niche type lamp for providing underwater illumination in a swimming pool or the like includes an over-temperature protection circuit which interrupts the supply of electrical energy to the lamp when the level of the cooling water surrounding the lamp drops below a predetermined level. The circuit includes thermistor mounted in an heat exchange relationship with the surrounding water so that heat energy generated in the thermistor, as a consequence of the current flow through it, is normally transferred to the surrounding water. Should the level of the surrounding water drop below that of the thermistor, the thermistor heat energy quickly evaporates any remaining water film on the exterior surface of the thermistor to allow its temperature to rise. The control circuit, in response to the temperature increase, interrupts the flow of electrical energy to the lamp to prevent over-temperature operation.

REFERENCES:
patent: 1792398 (1931-02-01), Rothen
patent: 1968072 (1934-07-01), Creighton
patent: 2928037 (1960-03-01), Lawrence
patent: 3187204 (1965-06-01), Adkins
patent: 3192379 (1965-06-01), De Garmo
patent: 3339066 (1967-08-01), Hart
patent: 3356908 (1967-12-01), Mitchell et al.
patent: 3445677 (1969-05-01), Leftwich
patent: 3693047 (1972-09-01), Hamstra
patent: 3723758 (1973-03-01), Sullivan
patent: 3761737 (1973-09-01), Robbins, Jr.
patent: 3781839 (1973-12-01), Bodge
patent: 3858106 (1974-12-01), Launius
patent: 3914592 (1975-10-01), Maxey
patent: 4135186 (1979-01-01), Minorikawa et al.

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