Illumination – Supported by vehicle structure – Condition responsive
Patent
1985-08-30
1987-07-07
Corbin, John K.
Illumination
Supported by vehicle structure
Condition responsive
362158, 362267, A61B 100, G02B 2300, F21L 700, F21V 2900
Patent
active
046782907
ABSTRACT:
For use in inspecting the interior pipelines and other machinery subjected to risk of explosive gasses, an improved explosive proof apparatus is disclosed. The apparatus includes a periscope assembly having an optical system and lamp sealed therein for viewing a specified area subject to illumination by the lamp. Moreover, a separate battery pack is included. A flow of nitrogen gas is delivered to the battery pack and periscope to surround the electrical components to thereby prevent explosion.
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Dainichi-Nippon Cables, Ltd., "Diaguide Scope", pp. 1-13, date unknown, printed in Japan.
Titan Tool Supply Company, Inc. "G Miniature Series Borescopes", pp. 1-4, Jul. 1, 1983, apparently printed in the U.S.A.
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Dolan-Jenner Industries, Inc., "Electronic Controls Fiber Optics", pp. 1-31, date unknown, apparently printed in the U.S.A.
Fiberoptics Technology Incorporated, untitled catalog, pp. 1-7, date unknown, printed in the U.S.A.
Reichert Fiber Optics, "Reichert Fiber Optics Flexible Industrial Fiberscope Model FS-2102", pp. 1 and 2, date unknown, printed in the U.S.A.
Reichert Fiber Optics, "Reichert Fiber Borescope Model FB 250A and FB 550", pp. 1 and 2, date unknown, printed in the U.S.A.
Reichert Fiber Optics, "Reichert Illuminators", pp. 1 and 2, date unknown, printed in the U.S.A.
Corbin John K.
Lemmo Vincent J.
Welker Engineering Company
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