Combustion – Illuminating flash device – e.g. – photographic bulb – etc. – Fuel charge within sealed transparent casing – e.g. – bulb
Patent
1978-01-30
1979-11-20
Dority, Jr., Carroll B.
Combustion
Illuminating flash device, e.g., photographic bulb, etc.
Fuel charge within sealed transparent casing, e.g., bulb
431362, 431360, F21K 502
Patent
active
041749448
ABSTRACT:
An electrically fired flash lamp which utilizes a single conductive lead member. The lead protrudes within the lamp's envelope and is covered by a quantity of primer material. A conductive coating (e.g. tin oxide) covers a major portion of the external surface of the envelope and is capacitively coupled through the envelope's wall to the combustible filamentary material (e.g. shredded zirconium) therein. In another embodiment, a second conductive coating is located on the internal surface of the envelope opposite the outer coating and in electrical contact with the filamentary material. Accordingly, both coatings are capacitively coupled when the lamp is electrically fired. A sequentially-activated array of the above lamps is also disclosed.
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Morris James C.
Newell P. Bruce
Waymouth John F.
Dority Jr. Carroll B.
Fraley Lawrence R.
GTE Sylvania Incorporated
Henderson William R.
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