Illumination – Supported by vehicle structure – Condition responsive
Patent
1988-06-27
1989-07-25
Sikes, William L.
Illumination
Supported by vehicle structure
Condition responsive
350 9618, 350 9622, 362 32, 362157, 362158, G02B 636, F21V 704
Patent
active
048506699
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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Olympus Corporation, "The Inside Story--Focus on Inspection", p. 2, The AXL-100 Explosion-Proof Light Source, apparently published in the U.S.A.
Smith Ken
Welker Robert H.
Healy Brian M.
Sikes William L.
Welker Engineering Company
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