An exploding foil initiator assembly is provided comprising a first layer of dielectric material, a second layer of dielectric material, a third layer of dielectric material, and a flyer. The first layer of dielectric material comprises a first pair of vias. The second layer of dielectric material comprises a first surface adjacent to the first layer of dielectric material, a second surface opposed to the first surface, a second pair of vias, and a bridge. Each of the second pair of vias extends from the first surface to the second surface and is in contact with one of the first pair of vias. The bridge is positioned on the second surface and is electrically connected to the second pair of vias. The third layer of dielectric material is positioned on the second surface of the second layer and comprises a bore positioned at least partially over the bridge forming a barrel. The flyer is positioned in the barrel on the bridge.

An ignitor for an electronic detonator, the ignitor including a microcontroller and a capacitor mounted on a printed circuit board (PCB) and electrically connected to one another, the microcontroller configured to discharge the capacitor in response to an actuation signal received by the microcontroller, a pair of conductive traces extending from the capacitor, a resistive element extending between the conductive traces and configured to radiate heat in response to current flowing therethrough, and a shroud disposed over the resistive element, the shroud containing a pyrotechnic composition that at least partially covers the resistive element.

An apparatus includes a pressure device bonded to the surface of a structure at a bonding location. The vessel comprises an interior space within the vessel and a bonding surface. A bonding agent bonds the bonding surface of the vessel to a surface of the structure. A gas-emitting material is disposed within the interior space of the vessel and an initiator is arranged to activate the gas-emitting material. Upon activation of the gas-emitting material by the initiator, the pressure device produces a localized force that breaks the structure.

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.

An apparatus, method and system to electrically ignite small explosive cartridges in boulders, bedrock, concrete etc. to split or shape them. A propellant or explosive charge is electrically ignited directly by an inert electrical igniter inserted therein that melts at high temperature a bridge wire(s) or ribbon(s) with AC or DC electrical current. The bridge melts normally at over 2,000 degrees F. which will ignite the propellant or explosive. With sufficient voltage and amperage such as 110 volt AC wall current ionization takes place along the pathway of the melting bridge, which melts at approximately 2,000 degrees F., and a large electrical arc forms at approximately 5,000 degrees F. that more reliably ignites the propellant or explosive with increased blast power. A reusable blasting rod includes an external groove for a blasting wire, a counterweight for better tamping, which has a cradle for heavy objects to utilize the Newton Kinetic effect.

An initiation system that includes a housing, an exploding foil initiator and a securing structure. The housing is formed of plastic and defines a cavity with an open end. The exploding foil initiator assembly has an initiator chip, a flyer layer and a barrel. The initiator chip has an electrically conductive bridge and is at least partly encapsulated in the plastic of the housing. The flyer layer has a first side, which faces the bridge, and a second side opposite the first side. The barrel is disposed between the second side of the flyer layer and an end of the cavity opposite the open end. The securing structure is formed of metal and is partly encapsulated in the plastic of the housing. The securing structure is disposed about the cavity and extends away from the housing about a perimeter of the open end of the cavity.

Exploding foil initiator apparatus, system, and method that improve the current density in the bridge region by modifying the shape and dimensions of the bridge and related components. The exploding foil initiator reduces burn-back by making areas of the bridge thicker except directly under the flyer. The exploding foil initiator boards are built so the flyer is not connected to the rest of the top cover-lay. This avoids losing energy due to the flyer having to tear away from the solid cover-lay.

Methods, systems, and devices for an area-denial munition configured for self-neutralization of an explosive ordnance. In one or more embodiments the munition including a housing including a chassis defining one or more openings such that the housing is an at least partially open structure exposing an interior to an ambient environment. In various embodiments the munition includes a detonation module including a detonation initiator and a deflagration module including a deflagration initiator coupled with a pyrotechnic primer, and munition control circuitry. In various embodiments the munition control circuitry receives instructions to deflagrate the explosive ordnance and instructs the deflagration module to activate the deflagration initiator. In various embodiments, the deflagration initiator causes a deflagration of the explosive ordnance for self-neutralization of the munition resulting in safe destruction of the munition's explosive charge and control electronics.

Provided is an initiator for a rocket motor. The initiator for a rocket motor includes: a sleeve assembly configured to form a hollow portion; and an ignition assembly including a plug portion mounted on the sleeve assembly to close one side of the hollow portion and configured to deliver an electrical signal and a foil ignition portion coupled to the inside of the plug portion to be adjacent to the hollow portion. The sleeve assembly includes: a first gunpowder accommodated in the hollow portion to be adjacent to the foil ignition portion and detonated by the foil ignition portion; and a second gunpowder accommodated inside the hollow portion to contact the first gunpowder and deflagrated or combusted by the detonation of the first gunpowder.

An initiator system with a first initiator device, which has a first initiator and a first charge, and a second initiator device that has a second initiator and a second charge. At least a portion of the second charge is isolated from the first initiator device such that operation of the first initiator will not cause the isolated portion of the second charge to detonate, deflagrate or combust.