Bismuth oxide primer composition
First Claim
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1. A priming mixture comprising:
- a primary explosive comprising up to approximately 70% of the priming mixture by weight;
a substantially non-hygroscopic oxidizer system comprising bismuth oxide, and having a texture sufficient to enable the oxidizer system to flow and form a substantially homogenous priming mixture when blended with the primary explosive; and
wherein the oxidizer system comprises approximately 20%-70% of the priming mixture by weight, and includes between about 1%-100% bismuth oxide by weight of the oxidizer system; and
a gas producing agent present in amount of about 5% to about 25% by weight of the priming mixture.
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Abstract
A priming mixture is provided having a primary explosive and an oxidizer system containing bismuth oxide. The priming mixture generally is applicable to any application or device that employs ignition of a propellant or fuel, including, but not limited to, air bag gas generator systems, signaling devices, ejection seats, small or large arms ammunition primers, and the like.
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Citations
20 Claims
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1. A priming mixture comprising:
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a primary explosive comprising up to approximately 70% of the priming mixture by weight; a substantially non-hygroscopic oxidizer system comprising bismuth oxide, and having a texture sufficient to enable the oxidizer system to flow and form a substantially homogenous priming mixture when blended with the primary explosive; and wherein the oxidizer system comprises approximately 20%-70% of the priming mixture by weight, and includes between about 1%-100% bismuth oxide by weight of the oxidizer system; and a gas producing agent present in amount of about 5% to about 25% by weight of the priming mixture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A priming mixture comprising:
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from about 20% about 70% by weight of a primary explosive; from about 10% to about 70% by weight of a substantially non-hygroscopic oxidizer system comprising approximately 5%-100% bismuth oxide and having a texture sufficient to flow with the primary explosive to form a substantially homogeneous priming mixture when the oxidizer system is blended with the primary explosive; from about 5% to about 25% by weight of a gas producing agent; from about 5% to about 20% by weight of a sensitizer; from about 5% to about 20% by weight of a reducing agent; and from about 0% to about 20% by weight of a conductive component. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of preparing a priming mixture for detonation of explosive devices including small arms ammunition, comprising:
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mixing a primary explosive material comprising approximately 20% to approximately 70% by weight of the priming mixture with water in an amount sufficient to substantially wet the priming mixture and form a wet explosive mixture; adding to and mixing with the wet explosive mixture about 5% to about 25% by weight of a gas producing agent and at least one of; about 0% to about 30% by weight of a sensitizer; and about 0% to about 20% by weight of a reducing agent; and about 0% to about 20% by weight of a conductive component; blending a substantially non-hygroscopic, non-toxic oxidizer system into the wet explosive mixture, the oxidizer system comprising about 10% to about 70% by weight of the priming mixture, and including approximately 1% to approximately 100% bismuth oxide by weight of the oxidizer system and having a texture sufficient to form a substantially homogeneous priming mixture after blending with the wet explosive mixture; and drying the mixture. - View Dependent Claims (19, 20)
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Specification