Improvements relating to pyrotechnic ammunition

F - Mech Eng,Light,Heat,Weapons – 42 – B

Patent

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Details

F42B 5/02 (2006.01)

Patent

CA 2283920

A cartridge comprising a casing (1) having a passage extending therethrough, said passage having a larger diameter rearward section (7) and a smaller diameter forward section (9). A core member is slidably received in the passage, and has a forwardly facing piston surface (21) and a portion (19) closing the forward length of passage in the unactivated condition of the cartridge. A cavity (23) within the core member receives propellant gas from a primer (25) and discharges the gas into the passage forwardly of the piston surface. The core is propelled rearwardly and releases propellant gas into the forward passage section.

L'invention concerne une cartouche comprenant une douille (1) dans laquelle est ménagé un passage, ledit passage possédant une section arrière (7) de gros diamètre et une section avant (9) de diamètre inférieur. Un élément central logé coulissant dans le passage présente une surface de piston (21) tournée vers l'avant et une partie (19) fermant la longueur avant du passage lorsque la cartouche n'est pas activée. Une cavité (23) située dans l'élément central reçoit d'une amorce (25) un gaz propulsif et libère le gaz dans le passage situé à l'avant de la surface de piston. L'élément central est propulsé vers l'arrière et dégage un gaz propulsif dans la section avant du passage.

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