Ammunition and explosives – Igniting devices and systems – Electrical primer or ignitor
Reexamination Certificate
2005-02-08
2005-02-08
Poon, Peter M. (Department: 3643)
Ammunition and explosives
Igniting devices and systems
Electrical primer or ignitor
C102S202700
Reexamination Certificate
active
06851370
ABSTRACT:
A detonator for initiating a detonation event in an explosive charge. The detonator comprises an exploding foil initiator and a switch. The exploding foil initiator includes a detonator bridge with a bridge member and a bridge contact that are electrically coupled to one another. The switch includes a switch contact that is spaced apart from the detonator bridge such that a spark gap of a predetermined width is defined between the bridge contact and the switch contact. A discharge arc, which is formed when a voltage in excess of a predetermined gap breakdown voltage is applied across the spark gap, closes the switch to thereby permit current to flow between the bridge contact and the switch contact.
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Cunningham Andrew F.
Hennings George N.
Nickolin Thomas M.
Reynolds Richard K.
Collins Timothy D.
Harness Dickey & Pierce PLC
KDI Precision Products Inc.
Poon Peter M.
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