Primer insulating base

Details Primer insulating base Primer insulating base

1985-12-10

1986-09-30

Dority, Jr., Carroll B.

Combustion

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

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

F21K 500

Patent

active

046144943

ABSTRACT:
A high-voltage photoflash lamp is provided wherein the primer material is electrically insulated from the metallic shreds therein by an adherent layer of hollow electrically insulating beads. The layer of hollow beads is contiguous to the surface of the primer material within the lamp envelope.

REFERENCES:
patent: 3602619 (1971-08-01), Van der Tas
patent: 3627459 (1971-12-01), Van der Tas
patent: 3685947 (1972-08-01), Meulemans et al.
patent: 3823994 (1974-07-01), De Graaf et al.
patent: 3884615 (1975-05-01), Sobieski
patent: 3930784 (1976-01-01), Anderson
patent: 3969067 (1976-07-01), Schupp
patent: 4059389 (1977-11-01), Armstrong et al.
patent: 4190413 (1980-02-01), Shaffer et al.
patent: 4229161 (1980-10-01), Bouchard et al.
patent: 4249887 (1981-02-01), De Caro
patent: 4302182 (1981-11-01), Shaffer
patent: 4369028 (1983-01-01), Bricker et al.
patent: 4388065 (1983-06-01), Martens

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