Abstract: A diversionary device has a housing containing a pyrotechnic cartridge (24) with an ignitable fuse (52). A firing arrangement includes an ignition cap (60) containing a primer charge (54). Passageways (74, 82) in the housing and ignition cap define a first flow path from the primer charge to a region of the housing in which the fuse (52) is located through which flash from the primer charge can flow to ignite the fuse (52). A further flow path connects said region of the housing with the exterior of the housing to supply the fuse with oxygen for reliable burning. The device may be a multi-burst device containing a plurality of cartridges (24) and the first flow path may include a flash divider (86) for directing a proportion of the flash from a primer charge on to the fuse (52) of each cartridge. The housing may be separable to allow replacement of the cartridges (24).

Abstract: A diversionary device has a housing containing a pyrotechnic cartridge (24) with an ignitable fuse (52). A firing arrangement includes an ignition cap (60) containing a primer charge (54). Passageways (74, 82) in the housing and ignition cap define a first flow path from the primer charge to a region of the housing in which the fuse (52) is located through which flash from the primer charge can flow to ignite the fuse (52). A further flow path connects said region of the housing with the exterior of the housing to supply the fuse with oxygen for reliable burning. The device may be a multi-burst device containing a plurality of cartridges (24) and the first flow path may include a flash divider (86) for directing a proportion of the flash from a primer charge on to the fuse (52) of each cartridge. The housing may be separable to allow replacement of the cartridges (24).