Photoflash lamp with loose powder composition and method of maki

Details Photoflash lamp with loose powder composition and method of maki Photoflash lamp with loose powder composition and method of maki

1979-11-21

1982-02-16

Scott, Samuel

Combustion

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

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

F21K 502

Patent

active

043157335

ABSTRACT:
A photoflash lamp which includes a plastic envelope having a flash-producing composition therein. The composition, in loose powder form, is held in position within the envelope prior to ignition by a removable retention means (e.g., cup-shaped paper wad or mica disk). The wad or disk is removed (e.g., ruptured) during the early stages of the flash cycle. A method of making the lamp is also disclosed.

REFERENCES:
patent: 2305561 (1942-12-01), Sylvesler
patent: 2791111 (1957-05-01), Gleim
patent: 2798368 (1957-07-01), Anderson
patent: 3220224 (1965-11-01), Baird
patent: 3228216 (1966-01-01), DeSaulniers et al.
patent: 3303674 (1967-02-01), Anderson
patent: 3310968 (1967-03-01), Buzalski
patent: 3332257 (1967-07-01), Garner et al.
patent: 3535063 (1970-10-01), Anderson et al.

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