Ammunition and explosives – Igniting devices and systems – Electrical primer or ignitor
Reexamination Certificate
2005-11-29
2009-08-18
Johnson, Stephen M (Department: 3641)
Ammunition and explosives
Igniting devices and systems
Electrical primer or ignitor
C102S202700, C102S202900, C102S202140, C102S472000
Reexamination Certificate
active
07574960
ABSTRACT:
An ignition element is provided for integration into a primer assembly. The ignition element includes an electrode housing including at least one cavity and an electrode disposed in the electrode housing. The electrode housing and electrode are electrically isolated from each other using insulators. A bridgewire and a primary ignition charge are located in the cavity such that upon application of current to the electrode the pyrotechnic ignition charge is ignited. A headstock is provided, and the electrode housing is threadably disposed within the headstock. Burst disks cover the cavity and separate the ignition charge from a primer charge containing powder disposed in a single booster holder.
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Dockery Luther Damian
Margiotta Peter
Johnson Stephen M
The United States of America as represented by the Secretary of
Zimmerman Frederic J.
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