Initiator including a zone of weakness

Details Initiator including a zone of weakness Initiator including a zone of weakness

2005-10-19

2010-06-08

Hayes, Bret (Department: 3641)

Ammunition and explosives

Igniting devices and systems

Electrical primer or ignitor

C102S202500, C102S530000

Reexamination Certificate

active

07730837

ABSTRACT:
The present invention relates to an electropyrotechnic initiator comprising: an ignition support (10); an electrical initiation system (11) connecting the ignition support (10) to a source of electricity; and a cap (2) containing at least one explosive composition, the cap being of generally cylindrical shape presenting an open first end (20) connected to the ignition support (10), an opposite second end that is closed by an end wall (21), and a peripheral side wall (22) which presents at least one zone of weakness (3). This initiator is essentially remarkable in that at least one of the zones of weakness extends along a non-closed trace and over a portion only of the side wall (22), i.e. without reaching its opposite ends.

REFERENCES:
patent: 5005486 (1991-04-01), Lenzen
patent: 5423261 (1995-06-01), Bernardy et al.
patent: 5601308 (1997-02-01), Cuevas
patent: 6338500 (2002-01-01), Perotto
patent: 2003/0177936 (2003-09-01), Luebbers
patent: 2004/0107856 (2004-06-01), Hennings et al.
patent: 2 852 388 (2004-09-01), None
patent: WO 02/08028 (2002-01-01), None
patent: WO 02/073117 (2002-09-01), None

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