Ammunition and explosives – Igniting devices and systems
Patent
1974-07-12
1976-04-06
Pendegrass, Verlin R.
Ammunition and explosives
Igniting devices and systems
181116, F42B 310
Patent
active
039481778
ABSTRACT:
An explosive cartridge for underwater shooting which is self-disarming in the event of underwater misfire, which includes a closed shell with main explosive charge therein, and a conduit as a primer well, extending closed end first into the shell for support of an impact-responsive primer in detonating relationship with the main explosive charge. The conduit is supported intermediate its ends in a wall of the shell in watertight relationship therewith, and hence the open end of the conduit is outside, and spaced from, the shell interior. In response to force of impact initiation applied to the primer when supported in the conduit, the conduit member is further driven into the shell sufficiently to break its watertight relationship with the shell wall, the broken seal thus providing a path for ingress and egress of water for disarming the cartridge in the event of a misfire.
Also provided is the above cartridge with impact-responsive primer emplaced in the conduit well member to provide a complete cartridge assembly ready for firing.
REFERENCES:
patent: 3348483 (1967-10-01), Sorg, Jr.
patent: 3358600 (1967-12-01), Griffith et al.
patent: 3431848 (1969-03-01), Foster
patent: 3451341 (1969-06-01), Dittmann
patent: 3463085 (1969-08-01), Andrew
patent: 3509820 (1970-05-01), Fitch et al.
Hercules Incorporated
Pendegrass Verlin R.
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