Abstract: An igniter with a charge sleeve is provided with a through hole having a cylindrical wall, a bridge wire extending at least partially within the through hole, and a consolidated ignition powder charge retained within the through hole of the charge sleeve such that the bridge wire is at least partially embedded in the ignition powder charge. The cylindrical wall comprises at least one of i) a protrusion embedded into consolidated ignition powder charge, ii) a dimple filled with the consolidated ignition powder charge, and iii) at least 2 cylindrical wall sections that are eccentric to each other. The at least one of the protrusion, dimple and 2 cylindrical wall sections positively interlock with the consolidated ignition and output powder charge to prevent the charge both from moving in a radial direction in relation to the bridge wire and from rotating in relation to the bride wire.

Abstract: An igniter with a charge sleeve is provided with a through hole having a cylindrical wall, a bridge wire extending at least partially within the through hole, and a consolidated ignition powder charge retained within the through hole of the charge sleeve such that the bridge wire is at least partially embedded in the ignition powder charge. The cylindrical wall comprises at least one of i) a protrusion embedded into consolidated ignition powder charge, ii) a dimple filled with the consolidated ignition powder charge, and iii) at least 2 cylindrical wall sections that are eccentric to each other. The at least one of the protrusion, dimple and 2 cylindrical wall sections positively interlock with the consolidated ignition and output powder charge to prevent the charge both from moving in a radial direction in relation to the bridge wire and from rotating in relation to the bride wire.

Abstract: An igniter is described comprising a defined space filled with at least an ignition charge; a bridge wire that is at least partially in heat transmitting contact with the ignition charge; and a means for locking the ignition charge into place with respect to the bridge wire such that any substantial relative motion between the ignition charge and the bridge wire is prevented. This prevents movement of an ignition charge within an igniter, particularly movement of an ignition charge relative to a bridge wire in order to protect the bridge wire from failure such as detaching or breaking.

Abstract: A standalone ignition subassembly designed for ready incorporation into pyrotechnic detonators.

Abstract: A detonator that incorporates certain features of automotive airbag initiators, and methods of making same.