Photoflash lamp with knurled foil strip

Details Photoflash lamp with knurled foil strip Photoflash lamp with knurled foil strip

1978-12-29

1980-10-07

Moy, Joseph Man-Fu

Combustion

Illuminating flash device, e.g., photographic bulb, etc.

Fuel charge within sealed transparent casing, e.g., bulb

F21K 500, F21K 502

Patent

active

042265835

ABSTRACT:
A long-duration photoflash lamp comprising a sealed glass bulb containing a gas filling of oxygen and nitrogen, an ignition filament, and a corrugated strip of magnesium foil having a knurled surface for optimizing usable light output.

REFERENCES:
patent: 2955447 (1960-10-01), Fink et al.
patent: 3002367 (1961-10-01), Fink
patent: 3199316 (1965-08-01), Cressman
patent: 3303674 (1967-02-01), Anderson
patent: 3384441 (1968-05-01), Zink et al.

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