Ammunition and explosives – Igniting devices and systems – Electrical primer or ignitor
Patent
1987-06-22
1992-02-25
Nelson, Peter A.
Ammunition and explosives
Igniting devices and systems
Electrical primer or ignitor
156634, 156 82, 149 15, 1022025, F42B 318
Patent
active
050903225
ABSTRACT:
A micro pyrotechnic train is formed from a reactive laminate comprised by a plurality of thin films of an electron acceptor material (9) and an electron donor material (10) alternately layered upon a substrate layer by vacuum deposition. The thus deposited films are then removed from selected areas by etching, using standard printed circuit board techniques, to leave a desired network of reaction progression paths (2). The thickness of the films is of substantially molecular order to maximize molecular intermingling between them, and the number of films is selected to ensure a reliable burning characteristic. Ignition of the conjoint films at any selected location initiates a self-sustaining exothermic reaction which progresses laterally along the film interfaces.
In further aspects the reactive laminate is applicable as an infra-red emitting coating and as a flash transmitter. It is also applicable as a bridge igniter, the laminate being employed as an electrode bridge in place of a conventional exploding bridge wire.
REFERENCES:
patent: 3669022 (1972-06-01), Dahn et al.
patent: 3765334 (1973-10-01), Rentz et al.
patent: 4050347 (1977-09-01), Adelman et al.
patent: 4256038 (1981-03-01), Dietz et al.
patent: 4409898 (1983-10-01), Blix et al.
patent: 4576094 (1986-03-01), Meador
patent: 4708060 (1987-11-01), Bickes, Jr. et al.
patent: 4729315 (1988-03-01), Proffit et al.
Nelson Peter A.
The Secretary of State of Defence in Her Britannic Majesty's Gov
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