Illumination – Light source and modifier – With sealing means or artificial atmosphere
Patent
1993-04-01
1995-01-31
Lazarus, Ira S.
Illumination
Light source and modifier
With sealing means or artificial atmosphere
362218, 362226, 362378, F21V 2900, F21V 3102
Patent
active
053863550
ABSTRACT:
The underwater portable drop light for use illuminating work sites in nuclear facilities has a high pressure sodium arc lamp sealed to a stainless steel base with a flexible, radiation-resistant seal to provide a watertight and shock-absorbing connection. A wet-mateable connector is attached to the base to permit underwater-changeable connection to a cable which supplies power from a ballast power supply. A light-transmissive, impact-resistant cover is formed around the arc lamp and attached to the base. The cover has openings through which water can flow in and out to conduct heat away from the arc lamp. The combination of the above elements creates a compact modular unit which is replaced as a whole when the arc lamp burns out, and which may be replaced in or out of the water, allowing maintenance work to continue essentially uninterrupted when radiation exposure time is an issue.
REFERENCES:
patent: 3949212 (1976-04-01), Larrimore
patent: 4683523 (1987-04-01), Olsson et al.
patent: 5105346 (1992-04-01), Acks et al.
patent: 5213410 (1993-05-01), Acks
Heyman L.
Lazarus Ira S.
Remote Ocean Systems, Inc.
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