Patent Number: 6,253,682

Title: Relating to pyrotechnic ammunition

Abstract: 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.

Inventors: Saxby; Michael Ernest (East Sussex TN39 5JN, GB)


International Classification: F42B 5/00 (20060101); F42B 5/02 (20060101); F42B 008/00 ()

Expiration Date: 07/03/2018