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6315424 |
Underwater safety lighting device for swimming pools
An underwater safety lighting device for lighting water beneath a surface (4) of the water in a swimming pool is provided. A water-tight light housing (1) is disposable beneath the surface (4) of...
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5578905 |
Flow-responsive air purged portable electric lamp
A portable electric lamp suitable for use in hazardous locations includes a fixture which is purged continuously with air during operation. Pressurized air is introduced at an input end of the...
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5519587 |
Air purged portable electric lamp
A portable electric lamp suitable for use in hazardous locations has the fixture purged with breathable air a predetermined time before power is coupled to energize the lamps. The fixture is...
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5140216 |
Explosion proof lamp with liquid extinguishant
An explosion proof light comprising a shatter-resistant, fluid tight, light transmissive case and a fluid tight light source sealed within the case in at least partial spaced-apart relation...
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5068720 |
Video inspection system for hazardous environments
A video inspection system for hazardous environments is provided, comprising a housing, sealable so as to contain a pressurized gas therein, having a view opening therein and further including a...
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4375315 |
Arc lamp illuminator
Arc lamp illuminator which can be used in an optical device for the transfer of patterns, incorporating a mixed fibre bundle which intercepts in an image plane of the source part of the emitted...
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4276580 |
Pressure actuated electrical system
This invention is an improvement to safe electrical systems which have a hermetically enclosed space containing an electrical circuit member wherein means are provided for connecting and...
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4275433 |
Lighting fitting
An electrical lighting fitting for a remotely hazardous area comprises two enclosures. The lamp itself is disposed in one enclosure and the control equipment for the lamp is disposed in the other...
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