Ammunition and explosives – Igniting devices and systems – Fuse cord
Patent
1981-12-28
1984-01-24
Brown, David H.
Ammunition and explosives
Igniting devices and systems
Fuse cord
1022754, 1022757, 10227512, F42B 310
Patent
active
044269331
ABSTRACT:
A detonator closed at one end by a primer shell whose integrally closed end has a percussion-sensitive primer charge supported adjacent its inside surface, and its outside surface disposed across the end of the detonator shell, is actuated by the detonation of one or two lengths of low-energy detonating cord (LEDC) adjacent the primer shell's outside end surface, a single length of LEDC being arrayed in a manner such that a pair of axially separated segments thereof, or two lengths arrayed in a manner such that a segment from each length, is anchored in place in side-by-side relationship adjacent said surface. This cord array assures reliable ignition of a center- or rim-fired percussion primer by means of the side-output of LEDC even with explosive core loadings at the low end of the LEDC loading range. A preferred detonator has a sleeve having a loop-like projection, most preferably M-shaped, diametrically disposed beyond the primer shell end through which a looped length of LEDC can be threaded in various ways to hold the pair of segments adjacent the primer shell.
REFERENCES:
patent: 3175491 (1965-03-01), Robertson
patent: 3205818 (1965-09-01), Coulson
patent: 3306201 (1967-02-01), Noddin
patent: 3349706 (1967-10-01), Schaumann
patent: 3709149 (1973-01-01), Driscoll
patent: 3713384 (1973-01-01), Turnbull
patent: 4024817 (1977-05-01), Calder et al.
patent: 4187780 (1980-02-01), Petruccelli
patent: 4232606 (1980-11-01), Yunan
patent: 4248152 (1981-02-01), Yunan
patent: 4299167 (1981-11-01), Bryan
E. I Du Pont de Nemours & Co., Blasters' Handbook, 175th Anniversary Ed., 1977, pp. 104 and 132.
Brown David H.
E. I. Du Pont de Nemours and Company
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