Abstract

A fuse mechanism for e.g. a pyrotechnic grenade in which a spring loaded striker lever (31) is blocked via a cammed surface (22) of a safety lever (21) comprising a handle. (25). Release of the handle (25) enables deployment of the fuse assembly. Spring-loaded striker lever (31) is urged upwards by the force of torsion spring (38). Contact between the free end (34) of the striker lever (31) exerts a rotational force on cammed portion (22). The safety lever (21) rotates away from the body of the munition (20). Rapid upward movement of the striker lever (31) is prevented at this stage by contact of the free end (34) with the cammed portion (22). Further rotation of the safety lever (21) occurs until point where the cammed portion (22) is no longer in contact with the striker lever. Ultimately, once the safety lever (21) has rotated beyond a certain extent, the free end of the striker lever (31) is no longer in contact with the cammed portion (22), and the striker lever is urged rapidly away from the body of the munition (20).

IPC Classes  ?

• F42C 14/02 - Fuzes characterised by the ammunition class or type for hand grenades
• F42B 3/117 - Initiators therefor activated by friction