Delay charge and element, and detonator containing such a charge

Details Delay charge and element, and detonator containing such a charge Delay charge and element, and detonator containing such a charge

1995-10-17

1997-08-05

Miller, Edward A.

Ammunition and explosives

Igniting devices and systems

Heat, friction, or chemical primers or ignitors

149 37, 149 197, F42C 1908, C06B 3300

Patent

active

056545207

ABSTRACT:
A pyrotechnic delay charge for providing delays in the millisecond and second ranges, comprising the components bismuth oxide as an oxidation agent and silicon as a fuel. The invention also relates to a pyrotechnic delay element having an enclosure containing the pyrotechnical delay charge, and to a detonator having a housing, ignition means disposed at one end of the housing, a base charge of a secondary explosive disposed at the other end of the housing and the pyrotechnic delay charge disposed therebetween.

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"Studies on Gasless Delay Compositions Containing Boron and Bismuth Trioxide", by N. Davies et al., from the 10th International Pyrotechnics Seminar held in Germany during Jul., 1985.
Chemical Abstracts, vol. 103, No. 24, Abstract No. 198070j, "Studies on Gasless Delay Compositions Containing Boron and Bismuth Trioxide", N. Davies et al. (1985).
Hampel, Rare Metals Handbook, p. 65, Reinhold Publ. Corp. (1954) New York.
STN Search--Bi.sub.2 O.sub.3, RN 1304-76-3.
De Yong et al., Chem Abs., 105 abs. #193917, of (report) Mater. Res. Lab. (Anst.) (1986) MRL-R-998, 19 pp.

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