James A Hewlett, 921816 Lakehill Ct, Columbus, OH 43229

6272995, Aug 14, 2001

Sep 14, 1999

9/395806

William Marc Schmidt - Batavia OH
James Arthur Hewlett - Loudon TN
Patrick Dwayne McGregor - Loveland OH
Ezra Stearns Waller - Sharonville OH
Donald Robert Helton - Batavia OH

KDI Precision Products, Inc. - Cincinnati OH

F42C 904
F42C 1504

102209

A high precision electro-mechanical fuze mechanism for a munition such as a hand grenade. The fuze mechanism includes an electromagnetic signal generator having an armature, a permanent magnet, a coil and a magnetic impulse generator (MIG) member. The armature is preloaded during assembly through the use of a spring. Releasing an actuating lever of the grenade allows the armature to begin spinning and to dissipate the energy stored by the spring. This causes a current to be electromagnetically generated in the coil, which is transmitted to an electronic control circuit in the fuze mechanism. The electronic control circuit implements two time delays from two separate timers which each must time out before the control circuit can send an electric firing signal to an electric detonator. Movement of the armature also causes a simultaneous movement of a rotor, which moves a stab detonator into a position closely adjacent the electric detonator. Detonation of the electric detonator immediately causes detonation of the stab detonator, which in turn detonates the primary explosive charge of the munition.