Abstract: A detonator for use with perforating gun assemblies is presented. The detonator includes a shell including a main explosive load. The shell may include one or more openings. A non-mass explosive body is disposed in the shell, adjacent the main explosive load. The non-mass explosive body includes one or more channels extending therethrough. The detonator includes a plug adjacent the non-mass explosive body, and a PCB adjacent the plug to facilitate electrical communication with the detonator. The plug may include an elongated opening extending therethrough. The channels of the non-mass explosive body, in combination with at least one of the openings of the shell or the elongated openings of the plug, are configured to introduce fluids, such as wellbore fluids, into the non-mass explosive body to disable the detonator.

Abstract: An ejector for ejecting a combustion product including, an igniter including an ignition charge and an ignition portion, a pyrotechnic agent, and a cup made of metal, the cup including a bottom surface and a peripheral wall, the peripheral wall being contiguous with a peripheral edge of the bottom surface and disposed to surround the ignition portion, the cup further including an accommodating space accommodating therein the pyrotechnic agent, the bottom surface of the cup including a through hole being defined by a plurality of through-hole peripheral edges, and the adjacent through-hole peripheral edges being connected together at a predetermined connection point, and the through hole including a narrow part, in which a width of the through hole defined by each of parts of the two through-hole peripheral edges of the plurality of through-hole peripheral edges decreases gradually with an increasing distance from a center of the bottom surface toward the peripheral edge of the bottom surface, and the narrow p

Abstract: A fireworks kit can have a set of fireworks having multiple fireworks of different types and a plurality of detonators in communication with the fireworks that are configured to launch or detonate a firework attached thereto. A remote controller or mobile device can be in communication with the detonators and operable to provide dynamic or user customizable control of detonation, launching, or ignition of the fireworks.

Abstract: 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.

Abstract: A jet cutter apparatus and method for using a single bridge wire or a plurality of bridge wires to uniformly detonate a booster and thereby cause a uniform detonation of the explosives adjacent to the liners, thereby causing a uniform compression of the liners to form a uniform plasma jet that is substantially radially perpendicular to the jet cutter.

Abstract: An electric match assembly for initiating a pyrotechnic device, the electric match assembly comprising an element for connection to a leader carrying the signal; a first electric match component for connection to the lift charge of the pyrotechnic device, the first electric match component connected to the element such that when the element is connected to the leader and the first electric match component is connected to the lift charge, the signal in the leader is applied to the lift charge; a second electric match component for connection to the time fuse connected to the burst charge of the pyrotechnic device, the second electric match component connected to the element such that when the element is connected to the leader and the second electric match component is connected to the time fuse, the signal in the leader is applied to the time fuse of the burst charge.

Abstract: An electric match assembly for initiating a pyrotechnic device, the electric match assembly comprising an element for connection to a leader carrying the signal; a first electric match component for connection to the lift charge of the pyrotechnic device, the first electric match component connected to the element such that when the element is connected to the leader and the first electric match component is connected to the lift charge, the signal in the leader is applied to the lift charge; a second electric match component for connection to the time fuse connected to the burst charge of the pyrotechnic device, the second electric match component connected to the element such that when the element is connected to the leader and the second electric match component is connected to the time fuse, the signal in the leader is applied to the time fuse of the burst charge.

Abstract: Electric match assembly for initiating a pyrotechnic device in response to a signal, the assembly comprising a first element for connection to a leader carrying the signal; a first electric match component for connection to the lift charge of the pyrotechnic device, the first electric match component being connected to the first element such that when the first element is connected to the leader and the first electric match component is connected to the lift charge, the signal is applied to the lift charge; a second electric match component for connection to the time fuse connected to the burst charge of the pyrotechnic device, the second electric match component being connected to the first element such that when the first element is connected to the leader and the second electric match component is connected to the time fuse, the signal is applied to the time fuse of the burst charge.

Abstract: Apparatus for providing electrically initiated and/or controlled combustion of electrically ignitable propellants is provided. In one example, the apparatus includes a volume of electrically ignitable propellant (liquid and/or gas) capable of self sustaining combustion, and electrodes operable to ignite the propellant. The apparatus may further include a power supply and controller in electrical communication with the electrodes for supplying a potential across the electrodes to initiate combustion of the propellant and/or control the rate of combustion of the propellant. Various configurations and geometries of the propellant, electrodes, and apparatus are possible. In one example, the electrodes are supplied a direct current, which causes combustion of the propellant at the positive electrode. In another example, the electrodes are supplied an alternating current, which initiates combustion of the propellant at both electrodes.

Abstract: A squib includes an SCB chip connected to electrode pins so as to ignite by externally applied electric current, and a capacitor electrically connected to the electrode pins in parallel with a thin film resistor on the SCB chip. The capacitor is arranged above the header, and the SCB chip is directly mounted on the capacitor so that the thin film resistor on the SCB chip and the capacitor are electrically connected through electrodes provided on a substrate of the SCB chip, while the size of the SCB chip is smaller than that of the capacitor. In this way, the invention provides the squib which effectively eliminates surface unevenness when the capacitor is located, and enables the connection of the SCB chip and the capacitor to the electrode pins only by one reflow process, and further makes it possible to use an even smaller chip than those used in the prior art.

Abstract: The pyrotechnic cup is designed such that it may be used as part of an airbag initiator. In some embodiments, the cup comprises a cylindrical portion and a dome that is attached to a first end of the cylindrical portion. A cruciform is also added to the cup. The cruciform is positioned at the apex of the dome. In some embodiments, the cruciform comprises one or more petals. Other embodiments may be designed in which deployment of the initiator causes gas to be directed out of the pyrotechnic cup via the apex of the dome.

Abstract: Electric match assembly for initiating a pyrotechnic device in response to a signal, the assembly comprising a first element for connection to a leader carrying the signal; a first electric match component for connection to the lift charge of the pyrotechnic device, the first electric match component being connected to the first element such that when the first element is connected to the leader and the first electric match component is connected to the lift charge, the signal is applied to the lift charge; a second electric match component for connection to the time fuse connected to the burst charge of the pyrotechnic device, the second electric match component being connected to the first element such that when the first element is connected to the leader and the second electric match component is connected to the time fuse, the signal is applied to the time fuse of the burst charge.

Abstract: There is provided a semiconductor bridge device wherein a reaction time for generating sparks is short and a spark generating amount is large. This semiconductor bridge device comprises a substrate, a pair of land portions, a bridge portion electrically connecting between the pair of the land portions, and an electrode pad arranged on each upper surface in the pair of the land portions and emitting sparks at the bridge portion through an electric current passed between the electrode pads, in which the pair of the land portions and the bridge portion consist of a laminate formed by alternately laminating a metal layer and a metal oxide layer plural times, and an outermost layer in the laminate is a metal layer, and a metal oxide having a decomposition temperature of higher than 1500° C. is used in the metal oxide layer.

Abstract: The invention relates to a microsystem and a method for fabricating a microsystem. The pyrotechnic microsystem (7, 1?) comprises a substrate having at least two separate electrical initiation zones, each of which provides separate electrical initiation of a pyrotechnic material deposited on the substrate. This microsystem (7, 1?) is characterized in that the same pyrotechnic material deposit (721, 721?, 13) covers both initiation zones, said deposit (721, 721?, 13) produced on the substrate having a thickness sufficiently small for the initiation of the pyrotechnic material in the initiation zone to remain localized and not propagate to the other initiation zone, but sufficient to generate a specific gas quantity.

Abstract: A metal holder, and a method of producing the same, with electrode pins suitably used for a gas generator having a structure that can prevent electrode pins from being burst forth easily even when the gas generator is brought into action under high temperature. The metal holder with electrode pins includes a metal holder and at least two electrode pins for allowing passage of electrical current. Each electrode pin is larger in diameter at its head portion than at its terminal portion. Plastic members are arranged to surround a part of the respective electrode pins circumferentially. Holes for the respective electrode pins to pass through the holder are formed in the holder, and the electrode pins are fixed to the holes via the plastic members, each hole having a diameter-reduction portion at a part thereof.

Abstract: The invention relates to a microsystem and a method for fabricating a microsystem. The pyrotechnic microsystem (7, 1?) comprises a substrate having at least two separate electrical initiation zones, each of which provides separate electrical initiation of a pyrotechnic material deposited on the substrate. This microsystem (7, 1?) is characterized in that the same pyrotechnic material deposit (721, 721?, 13) covers both initiation zones, said deposit (721, 721?, 13) produced on the substrate having a thickness sufficiently small for the initiation of the pyrotechnic material in the initiation zone to remain localized and not propagate to the other initiation zone, but sufficient to generate a specific gas quantity.

Abstract: A gas generator comprising a first cup case 3 packing therein gas generant 2 to generate gas by the burning of it, a squib 5 having a second cup case E arranged in an inside of the first cup case 3 and containing an ignition charge D, a squib case 7 having a hole 20 and covering the second cup case E, and a holder 6 to hold the squib case 7 and second cut case E by crimping, wherein the holder 6 has holes 13, 14 for allowing passage of electrode pins 11, 12 of the squib 5, one for each of the electrode pins 11, 12.

Abstract: There is provided a molded polymeric coupling device incorporating integral hinges, latches and strain-relief features adapted to receive an electric match having a protective chamber, and a quickmatch fuse of a pyrotechnic device. After the quickmatch fuse is suitably placed in the coupling device, it is latched in a closed position around the quickmatch fuse. A piercing structure such as a cone forms an opening in the outer layer of the quickmatch fuse so that, upon ignition of the electric match, flame therefrom is directed into and ignites the central blackmatch core of the quickmatch fuse. The coupling device allows rapid and accurate attachment of an electric match to a quickmatch fuse at the fireworks display site by persons of limited skill and/or experience. The electric matches are protected by the coupling device, preventing unexpected ignition from impact, friction, ESD, or other similar ignition sources.

Abstract: A pyrotechnic initiator having an initiator including a relatively low monolithic ignition charge that is separated from an overlying output charge by an intermediary slip plane. The slip plane may simply be a non-integral junction between monolithic ignition and output charges, or it may be a junction between a monolithic ignition charge and a non-monolithic output charge, or it may be a void or barrier between the ignition and output charges.

Abstract: A pyrotechnic initiator having a bridgewire configured in an enhanced heat-sinking relationship with the adjacent ignition charge and/or header glass surface without the necessity of a consolidation force.

Abstract: An igniter assembly for a pulsed flame photometric detector having a filament comprising a resistive heating wire between about 0.08 millimeter and about 0.40 millimeter in diameter wound into a coil having an inner diameter between about 0.40 millimeter and about 3.2 millimeters. The filament has an applied protective coating of an alloy of gold and palladium. The filament is detachably connected to a cable and connector assembly that connects the filament to a source of power in the pulsed flame photometric detector.

Abstract: The invention relates to trigger units for initiating pyrotechnic elements which usually consist of a switch and control unit, ignition means and an ignition charge body. Said switch and control element is triggered by way of an electric coupling via a line in order to initiate ignition. The line for the electric coupling and the dimensions of the switch and control element which are usually accommodated in an IC housing complicate the design and the automatic assembly of the trigger units. According to the invention, the switch and control element (1) is surrounded by a first shell (2). Said first shell (2) is connected to a second shell (1) which contains the ignition charge body (23). The invention is further characterized in that the ignition means (19) dip into said second shell (21).

Abstract: An ignition element consists of a combination of first and second ignition components. The first ignition component contains at least one primer, at least on heat-conducting additive selected from the group consisting of zirconium, aluminum, titanium, ferrotitanium, zirconium boride, zirconium hydride and mixtures thereof, at least one oxidant and a binder. The second ignition component contains at least one ingredient that produces hot re4action particles, an oxidant, and a binder.

Abstract: An electronic module for a detonator, the module comprising an electronic circuit (4, 5, 6) encapsulated in a mass of hardened resin (7) in which there terminates at least one inlet conductor (8) and from which there extend two outlet conductors forming a detonator ignitor line (9), the mass of resin (7) being received in a tubular housing (1) which extends beyond the mass of resin (7) adjacent to the ignitor line (9) to define a cavity (11), the outlet conductors of length greater than the depth of the cavity forming an ignitor line (9) short circuited outside the mass of resin inside the cavity (11), which cavity is provided with a removable end cap (12).

Abstract: An electrical connector device for use with a pyrotechnic ignition apparatus having a magazine for igniting a plurality of devices in an array in an ignition sequence includes a plastic tube mounted in a metal cap casing to which first and second electrically isolated terminals are attached, the terminals being located in the tube chamber and extending to the casing exterior. A wire is connected to each terminal at one wire end and to a terminal attached to a plastic end cap at an end of the plastic tube opposite the metal casing. The end cap is attached to a further tube mounted telescopically inside the plastic tube. A connector is attached to the end cap terminals. The connector device is of generally the same construction at its casing terminals as the pyrotechnic devices so as to be placed in the magazine in place of a pyrotechnic device and responsive to a generated ignition signal. A remote pyrotechnic device is attached by a cable to the end cap connector.

Abstract: An igniter unit for an inflator unit comprises a base in which electric contact pins are arranged and a plug for plugging into the base to contact the contact pins. The plug is provided with at least one key and the base is provided with at least one guide groove for the key.

Abstract: An electrically initiated distributed igniter (EIDI) system combines most of the advantages of conventional pyrotechnic igniters with those of ETC planar igniters without the disadvantages of either. The EIDI system lends itself to precise timing control of multiple electric circuits, embedded charge ignition, and other design advantages to be discussed here. The EIDI system utilizes discrete igniter pads which require only a few millijoules of energy each and are quite small in size, about 3 mm in diameter. As a result, the igniters can be used in very large numbers to give good spatial distribution, even for smaller 25 to 40 mm diameter gun charge designs. Energy requirements are so minimal that small disposable firing capacitors and semi-conductor switches can be pre-packaged inside the casing along with the propellant and igniters.

Abstract: Supplying a predetermined amount of electric energy to a fine metal wire 4 in a short time causes the fine metal wire 4 to melt and evaporate. Following this phenomenon, a blasting substance 10 expands in volume, so that the evaporative expansion force resulting from the melting evaporation of the fine metal wire 4 is transmitted to and blasts a to-be-blasted object 5.

Abstract: An igniter for a gas generator comprises at least two connecting leads and an incandescent means arranged between the connecting leads and surrounded by an igniting substance. Several filaments are used as the incandescent means.