Device for igniting a propellant charge, a cartridge for the cha

Details Device for igniting a propellant charge, a cartridge for the cha Device for igniting a propellant charge, a cartridge for the cha

1994-07-18

1995-12-05

Jordan, Charles T.

Ordnance

Explosive operated apparatus

102205, 227 10, F42C 1908, B25C 112

Patent

active

054719038

ABSTRACT:
A device for igniting a propellant charge is provided with a housing defining a cavity wherein a piston is displaceably guided. The cavity is connected via a bore acting as a nozzle to a chamber wherein a case member of a cartridge is arranged for accommodating the propellant charge. A bottom wall of the case member is equipped with a bore aligned with the bore acting as a nozzle. A primer wafer is disposed on the inner surface of the bottom wall, this wafer being thinner in its central zone than in its marginal zone. The central zone of the primer wafer is a region under mechanical thermal stress during compression, the ignition energy being introduced to the primer wafer via this region in the form of hot compressed air from the compression chamber.

REFERENCES:
patent: 3058116 (1962-10-01), Hilti
patent: 4056062 (1977-11-01), Walser et al.
patent: 4078710 (1978-03-01), Galluzzi
patent: 4856433 (1989-08-01), Evans
patent: 5038665 (1991-08-01), Aske et al.

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