Ammunition and explosives – Igniting devices and systems – Electrical primer or ignitor
Patent
1985-04-22
1987-08-18
Nelson, Peter A.
Ammunition and explosives
Igniting devices and systems
Electrical primer or ignitor
10220212, 10220214, 1022029, 427106, 427123, F42B 312
Patent
active
046869034
ABSTRACT:
The pole body for electric fuses comprises a homogeneous insulator in which a needle-shaped detonator pin is arranged normally to the plane of a metal layer which contacts a detonator charge on its opposite side. Due to the nearly point-shaped detonating bridge formed in the metal layer there occur, at the moment of detonation, very high current densities which cause melting of the detonating bridge. The pole body is manufactured from a glass tube surrounded by a metal tube. In order to prevent occlusion of gas in the insulator formed from the glass tube, a guiding body is placed upon the tip of the detonator pin which is part of a pole pin or of a pole cup during the melting operation. Preferably, the pole body is used in fuses with extremely short reaction times, for example, in ammunition, projectiles and the like.
REFERENCES:
patent: 3134329 (1964-05-01), Zeman
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patent: 4267567 (1981-05-01), Nygaard et al.
patent: 4335653 (1982-06-01), Bratt et al.
patent: 4409262 (1983-10-01), Jelks et al.
patent: 4576094 (1986-03-01), Meador
Ems-Inventia AG
Kleeman Werner W.
Nelson Peter A.
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