Explosive energy-initiatable blasting caps containing a porous i

Details Explosive energy-initiatable blasting caps containing a porous i Explosive energy-initiatable blasting caps containing a porous i

1976-07-30

1978-02-14

Pendegrass, Verlin R.

Ammunition and explosives

Igniting devices and systems

102 23, 102 29, F42D 104, F42B 310

Patent

active

040732355

ABSTRACT:
A non-electrically initiated blasting cap containing a porous ignition charge which is permeable for flow of a gas stream therethrough and initiatable in response to explosive energy of an explosive gas mixture, including conduit means for emplacing a confined stream of the explosive gas in position within the blasting cap for the responsive initiation.
Also provided is a system, including a plurality of the above blasting caps spaced apart for detonation of one or more main charges, together with additional conduit means for conveying the explosive gas to the plurality of blasting caps for the emplacement, and means for ignition of the thus emplaced explosive gas.
Method is provided for making a blasting cap containing a porous ignition charge, making a porous ignition charge and initiating a non-electric blasting cap for the initiation of a main explosive charge.

REFERENCES:
patent: 3132585 (1964-05-01), Higashishima et al.
patent: 3885499 (1975-05-01), Hurley
patent: 3939772 (1976-02-01), Zebree

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