Ammunition and explosives – Igniting devices and systems – Electrical primer or ignitor
Patent
1980-09-02
1982-06-22
Nelson, Peter A.
Ammunition and explosives
Igniting devices and systems
Electrical primer or ignitor
1022029, F42C 1912
Patent
active
043356532
ABSTRACT:
The present invention relates to an electric igniter of the type comprising two electrically conductive bodies separated by an insulating body. The conductive bodies and said insulating body define a very smooth common surface having a thin connective member electrically connecting the conductive bodies. A pyrotechnic charge is in contact with said thin connective member for ignition when said member is heated by a flow of electric current therethrough. The connective member comprises one or more thin metal layers which are bonded to said smooth surface. In order to give the igniter a somewhat "slower" electrical response as well as increasing the mechanical strength of the connective member. The connective member also comprises an additional thin layer of inert material, preferably a glass- or SiO.sub.2 -layer, applied directly on the upper metal layer.
REFERENCES:
patent: 3295446 (1967-01-01), Harnau
patent: 3390636 (1968-07-01), Perkins et al.
patent: 3719148 (1973-03-01), Gawlick et al.
patent: 3725671 (1973-04-01), Keister et al.
patent: 4014264 (1977-03-01), Bendler et al.
patent: 4156390 (1979-05-01), Ferguson et al.
patent: 4267567 (1981-05-01), Nygaard et al.
Bratt Sven-Erik
Nygaard Kurt
Nygards Olof
Aktiebolaget Bofors
Nelson Peter A.
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