Ammunition and explosives – Igniting devices and systems
Patent
1976-08-10
1979-01-02
Pendegrass, Verlin R.
Ammunition and explosives
Igniting devices and systems
102 27F, C06C 506
Patent
active
041321715
ABSTRACT:
A detonator having an open-ended metal jacket containing a small explosive charge remotely ignited through a pair of wires extending through one end of the jacket. The explosive charge projects toward one end of the jacket thereby forming an air gap between the explosive charge and the jacket. The air gap absorbs and attenuates the explosive shock so that relatively thin jacket walls are of sufficient strength to withstand detonation of the explosive charge, thereby making the detonator incapable of causing bodily injury. The detonator can be used to ignite a detonating cord by inserting the cord through the open end of the jacket into a jacket cavity until the explosive core of the cord contacts the projecting charge with the casing of the cord occupying the air gap to enclose the explosive charge. Alternatively, the detonator can be used as a conventional blasting cap by arming the cavity with a sufficient quantity of explosive material to rupture the jacket after the detonator has been set up to initiate an explosive charge.
During transportation and handling, the cavity in the detonator is always empty and its open end is covered with a plug. The detonator is, therefore, inherently incapable of either causing injury or detonating another explosive charge.
REFERENCES:
patent: 1086707 (1914-02-01), Hoagland
patent: 3291046 (1966-12-01), Dahl
patent: 3311056 (1967-03-01), Noddin
patent: 3371604 (1968-03-01), Wikner et al.
patent: 3739724 (1973-06-01), Tlam
patent: 3878786 (1975-04-01), Ridgeway
Pawlak, administrator by Cathy J.
Pawlak, deceased Daniel E.
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