Explosion-proof optical fiber connector for a light source
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United States of America Patent
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Jul 25, 1989
Issued Date -
N/A
app pub date -
Jun 27, 1988
filing date -
Aug 15, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The optical inspection apparatus consists of an explosion-proof light projector and a viewing periscope. In one embodiment, an external power source connects to an explosion-proof housing protectively enclosing a lamp. In another embodiment, the lamp, batteries, and a circuit are included within the explosion-proof housing, providing a fully portable, self-contained and explosion-proof light projector. A viewing periscope is provided for examination of meter tubes, tanks vessels and other enclosed machinery. An explosion-proof connector is also disclosed providing an explosion-proof and thermally resistant interface between a light source and a fiberoptic light guide. A timing circuit is also disclosed prolonging the operation time of the light projector on one charge of the battery.
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