Abstract: A multi-shot cake or aerial firework assembly, including a plurality of mortar tubes defining a firework assembly, wherein each respective mortar tube has a top end, an oppositely disposed bottom end, and a mortar tube length, and a plurality of shells, each respective shell disposed within a respective mortar tube. A first short tube having a first short tube length less than the mortar tube length is connected to the firework assembly, wherein the first short tube has a first short top end and a first short tube bottom end. A second short tube having a second short tube length less than the mortar tube length is connected to the firework assembly, wherein the second short tube has a second short tube top end and a second short tube bottom end. A fountain firework disposed within the second short tube for discharge through the second short tube top end.

Abstract: The present invention provides a cartridge (1) for a chemical heater used in down-hole operations. The cartridge (1) comprises a quantity of a chemical reaction heat source (2) wrapped in a temporary coating (3) that is capable of maintaining the shape of the cartridge (1) prior to use but which is consumed during the burn of the heater. The present invention also provides a eutectic/bismuth based alloy well plugging/sealing tool (5). The tool (5) having a tubular heater body (6) with an internal cavity (8) capable of receiving a chemical heat source and a quantity of eutectic/bismuth based alloy (7) provided in thermal communication with the heater body (6) around an outer surface of the heater body (6). The tool has a sleeve (10) provided around an outer surface of the alloy (7), which insulates and/or mechanically protects the alloy (7) down-hole. In this way the sleeve (10) enables the diameter of tool (5) to be reduced whilst maintaining its functionality.

Abstract: The present disclosure relates to a connector for a blast-triggering device, said connector including a connector head in which a rear end thereof is integrally connected with a rear surface of a connector body, an upper surface thereof is formed in a curved surface extending from the rear end thereof to a front end thereof, a tube insertion portion is provided between a lower surface thereof and the connector body so that a plurality of shock tubes is fitted therein, and the front end thereof is separated from the connector body. Thus, it is possible to maintain the shape of the connector during detonation, thereby minimizing the generation of debris and improving the safety at the time of detonation. In addition, it is possible to prevent damage to the plurality of shock tubes, thereby preventing a cut-off phenomenon caused by damaged shock tubes during detonation.

Abstract: A coreless-coil shock tube package system includes a “coreless” bundle of shock tubing, meaning that the tubing is not wrapped around a spool. The bundle may be a generally cylindrical coil of shock tubing. Optionally, two washer-like end plates abut the ends of the tubing coil for axial support. A self-adhesive tape covering partially covers the coil and end plates. A detonator is attached to one end of the tubing and lies tucked into the coil, through an end plate, for storage and transport. An igniter is attached to the tubing's other end. In use, the detonator is removed from the coil and attached to an explosive device. Then, the package is pulled away from the detonator and explosive, thereby uncoiling the tubing through the end plate for deployment. The igniter is actuated for igniting the shock tubing and activating the detonator and explosive.

Abstract: A method comprising the steps of providing an Explosive Initiation Safety and Handling System (EISS) coupled to a robot, operatively coupling a charge carrier table and a manipulator to the robot; securing a charge to the charge carrier table; installing a shock tube spool on the shock tube spooling mechanism and locking with an indexing nut; inserting the shock tube that has been uncoiled from the spooling mechanism into the interrupter and replacing the cap; attaching the shock tube to the charge; making an initiator-to-interrupter connection with the shock tube; retracting the manipulator on the robot to a fully stowed position and rotating the charge carrier in front of the robot; picking up the charge with the manipulator, extending the manipulator forward and placing the charge at a threat; stowing the charge carrier; positioning the robot at a distance from the threat, allowing the shock tube to spool out; remotely activating a first firing circuit on the robot to arm the system; cutting the shock tube

Abstract: An apparatus for use with a perforating device includes a section having a window and a detonating cord disposed in a bore of the section. The apparatus may include a detonator configured to generate a high order detonation; and a clip connecting the detonator to the detonating cord. The clip may be formed as a ribbon having a base and a prong extending from opposing sides of the base. The base has an opening for receiving the detonator. The prongs have biased ends to secure the detonating cord against a face of the detonator.

Abstract: A signal tube connector which can be used with a number of signal tubes which includes a detonator receiving body and a retention member, wherein a signal tube locating space is formed between opposing surfaces of the body and the member and wherein the retention member is movable relative to the body and can be locked in place with a locking mechanism to retain signal tubes within the space.

Abstract: A mechanical firing adapter for an igniter, such as an M81, to enable remotely firing the igniter using a robot, such as a MTRS. MTRS are used in the disposal/disruption of IEDs. Igniters are generally used with a shock tube, a type of fuse that is used with explosive charges, like shape charges. The adapter has a base plate with a first area to secure the igniter, a second area to withdraw the igniter's pull-rod by the attached pull-ring, and a compound assembly that interfaces with a robot. The pull-ring is attached to a sled that moves rearward when a clinching force is applied to opposing paddles, which causes the connected angled articulating struts to spread open. The paddles are moved closer by a remote controlled robotic jaw, and this closing movement causes the sled to move rearward, pulling out the pull-rod, which sets off the explosive.

Abstract: A priming assembly and a method are provided for coupling a plurality of detonators to at least one explosive through a plurality of transmission lines. The priming assembly may include a housing that receives the plurality of detonators and the plurality of transmission lines. In use, the plurality of transmission lines may communicate with the plurality of detonators within the housing to transmit explosive charges from the plurality of detonators to the at least one explosive.

Abstract: A priming assembly and a method are provided for coupling a plurality of detonators to at least one explosive through a plurality of transmission lines. The priming assembly may include a housing that receives the plurality of detonators and the plurality of transmission lines. In use, the plurality of transmission lines may communicate with the plurality of detonators within the housing to transmit explosive charges from the plurality of detonators to the at least one explosive.

Abstract: A priming assembly and a method are provided for coupling a plurality of detonators to at least one explosive through a plurality of transmission lines. The priming assembly may include a housing that receives the plurality of detonators and the plurality of transmission lines. In use, the plurality of transmission lines may communicate with the plurality of detonators within the housing to transmit explosive charges from the plurality of detonators to the at least one explosive.

Abstract: The invention relates to a method and a device for propagating the detonation effect from one detonation cord (5) to another, whereby the detonation cords (5) comprise respective boosters (4) at their ends. The booster of one detonation cord and the booster of the other detonation cord to which the detonation effect should be propagated are arranged with their front faces joining each other. The aim of the invention is to provide a method and a device which allows propagation also under unfavorable conditions while requiring only few individual parts. For this purpose, at least one booster of two adjacent detonation cords is subjected to a force acting in the direction of the other booster, thereby ensuring constant contact of the front faces (15) of the adjacent boosters.

Abstract: A connector clip (10, 10?) defines a line-retaining slot (34) and is configured to receive a detonator (16) therein. The connector clip (10, 10?) comprises a body member (12, 12?) and a closure member (14, 14?) which are mounted, one on the other, for movement relative to each other along a travel path between an open position in which the line-retaining slot (34) is accessible to lateral insertion therein of one or more signal transmission lines (68), and a closed position in which the line-retaining slot (34) is closed to secure such signal transmission lines (68) therein. One of the body member (12, 12?) and the closure member (14, 14?) defines a cavity within which at least part of the other of the body member (12, 12?) and the closure member (14, 14?) is encased during travel between the open position and the closed position.

Abstract: A chemical detonator includes a housing, having an open end and a closed end; and a detonation element located in the housing, into which a shock tube for initiating the detonation element intrudes, wherein the housing and the shock tube are of plastics construction and the housing is substantially cylindrical cup shape, and wherein the shock tube intrudes into, and is welded to, the open end to hold the shock tube at a desired spacing from the detonation element. The detonator includes a detonation element that includes a series of charges.

Abstract: An explosive matrix assembly is provided in which a single detonating cord is configured into a first set of at least five parallel sets of paired portions lying in the same plane, with adjacent parallel pairs being spaced about two inches apart. The detonating cord is further configured so that there is a second set of at least five more parallel portions that are substantially orthogonal to the first set and that lie on top of the first set. Finally, the detonating cord is further configured so that there is a pair of portions that operably secure the matrix to an appropriate explosive initiator.

Abstract: A method of producing an assembly of a connector block (1, 21, 40) and a detonator (5, 25, 41) suitable for retaining at least one shock tube (4, 24) adjacent to a percussion-actuation end (15, 26) of the detonator, and to an assembly thus produced and a connector block therefor. The method comprising inserting a detonator into a connector block having a housing (2, 22, 40) provided with a bore (13, 31, 44), positioning the detonator in the bore of the housing so that the percussion-actuation end of the detonator is positioned adjacent to a slot (14, 35) for receiving the shock tubes; and fixing the detonator in the housing. The detonator is fixed in the housing by causing a body of material (10) to flow plastically into the recess in the detonator and to harden therein to form a locking element fixed to the housing, thereby preventing accidental movement of the detonator within the connector block.

Abstract: A method of producing an assembly of a connector block (1, 21, 40) and a detonator (5, 25, 41) suitable for retaining at least one shock tube (4, 24) adjacent to a percussion-actuation end (15, 26) of the detonator, and to an assembly thus produced and a connector block therefor. The method comprising inserting a detonator into a connector block having a housing (2, 22, 40) provided with a bore (13, 31, 44), positioning the detonator in the bore of the housing so that the percussion-actuation end of the detonator is positioned adjacent to a slot (14, 35) for receiving the shock tubes; and fixing the detonator in the housing. The detonator is fixed in the housing by causing a body of material (10) to flow plastically into the recess in the detonator and to harden therein to form a locking element fixed to the housing, thereby preventing accidental movement of the detonator within the connector block.

Abstract: A connector block for retaining at least one shock tube in signal transfer relationship with a detonator. The connector block comprises a housing (2, 21) having a bore (4, 23) formed therein for receiving a detonator (6, 36) provided with a percussion-actuation end (7, 25), a shock tube retention means (8, 28) defining with the housing a slot (9, 29) for receiving therein at least one shock tube (10, 30) and holding the at least one shock tube in signal transfer relationship with the percussion-actuation end of the detonator present in the bore, the slot having an entrance (12, 32) for allowing insertion of the at least one shock tube into the slot, and a flexible and resilient closure member (11, 31) or an inflexible closure member (50) pivotable on a sprung hinge (51) extending partially or fully into the entrance.

Abstract: A connector block for retaining at least one shock tube in signal transfer relationship with a detonator. The connector block comprises a housing (2, 21) having a bore (4, 23) formed therein for receiving a detonator (6, 36) provided with a percussion-actuation end (7, 25), a shock tube retention means (8, 28) defining with the housing a slot (9, 29) for receiving therein at least one shock tube (10, 30) and holding the at least one shock tube in signal transfer relationship with the percussion-actuation end of the detonator present in the bore, the slot having an entrance (12, 32) for allowing insertion of the at least one shock tube into the slot, and a flexible and resilient closure member (11, 31) or an inflexible closure member (50) pivotable on a sprung hinge (51) extending partially or fully into the entrance.

Abstract: A chemical detonator includes a housing, having an open end and a closed end; and a detonation element located in the housing, into which a shock tube for initiating the detonation element intrudes, wherein the housing and the shock tube are of plastics construction and the housing is substantially cylindrical cup shape, and wherein the shock tube intrudes into, and is welded to, the open end to hold the shock tube at a desired spacing from the detonation element. The detonator includes a detonation element that includes a series of charges.

Abstract: A pyrotechnic device having an ignition delay between a fuse or igniter and a device to be ignited, including a first element which defines a first space that houses at least one fuse or igniter, and a second element which communicates with a second space that houses the device to be ignited, moreover, the device includes a track containing an evenly burning flammable material, which is in permanent contact with the first space by a connecting portion of the first space and with the second space by an opening. The first element can slide in relation to the second element and/or vice versa such as to alter the length of the track between the connecting portion and the opening, in order to modify the duration of the ignition delay.

Abstract: A block molded from a polymeric material has a through passageway to contain a percussive shock wave. Angularly related channels communicate with the containment passageway for receiving arcuate segments of detonation cord. Alignment of a plurality of blocks provides a convenient packaging setup for the cord. A percussive signal traveling along the cord can be short-circuited in the packaging setup. A diode version of the block can react to the signal in a given direction of travel.

Abstract: A perforating gun connector comprising a first and second section connected together on one end. The two sections of the perforating gun connector that couple together are correspondingly tapered so that one end of one connector is tapered and fits into the corresponding tapered hollowed section of one end of the other section. The present invention also provides for the inclusion of shaped charges and booster charges within. Adjacent the charges are sealing bulkheads.

Abstract: A detonator (10) has a constant-diameter shell (12) which has a significantly higher shell length-to-diameter (outside diameter) ratio than prior art detonators. The shell (12) is configured to hold an explosive output charge (18) which is cylindrical in configuration and has a charge L:D ratio which is greater than that of prior art constant diameter detonators. As a result, a significant portion of the output signal of the detonator is directed laterally and it is feasible to transfer signals to a plurality of receptor lines disposed along that portion of the length of the detonator which is co-extensive with the length of the explosive output charge (18). A connector block (26) is configured to hold at least one array of receptor lines in side-by-side arrangement along the side of the detonator (10), and transversely to the longitudinal axis of the detonator (10).

Abstract: A timed pyric chain apparatus, particularly for the ignition of pyrotechnical fireworks includes a main conduit (2) for a retard fuse (16) the main conduit (2) having lateral branch conduits (5). The apparatus consists of coupled modular elements, each modular element having a fuse holder (1) including a main conduit (2) in which a retard fuse (16) is to be placed. The main conduit is divided into a first portion (4), the cross section of the first portion (3) being smaller than the cross section of the second portion (4), the fuse holder further including a lateral branch conduit (5) for receiving a wick (17) retainer (11) for a part of its length. The wick is provided with a fire passing sheath (18), the coupling of a first fuse holder (1) to a second fuse holder (1?) resulting from the introduction of the first portion (3) of the first fuse holder (1) in a second portion (4?) of the second fuse holder (1?).

Abstract: Group firing system for firework unit, wherein it has 1–2 paper fuse tubes, which are assembled with other shot tubes. While both ends of the paper fuse tubes have male socket and female socket, so each firework unit could be connected to a firework group through soft fuse hose which contains a fuse inside. There are two firing systems, i.e. series connection and parallel connection.

Abstract: Breaching apparatus including a housing constructed of a material that disintegrates upon explosion without significant amounts of fragments being given off, and an explosive element disposed in the housing capable of producing an explosive force sufficient for breaching a structure.

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: An initiator (14c) for a secondary explosive receptor charge is provided by forming a length of detonating cord (14) into a helical coil containing a plurality of windings with a cut-off barrier provided by, e.g., a separating rib (46) between adjacent windings. The adjacent windings may be not more than about 0.5 inch (12.7 mm) apart. The detonating cord (14) may be wound about a spindle (16) which may optionally provide the separating rib (46). The coil may be a tapered coil which may define a taper angle of e.g., from about 2 to 4 degrees. Alternatively, the coil may be a cylindrical coil, or the cord may be configured in a planar spiral. Optionally, the detonating cord in the helical coil may have a core of explosive material with a loading of less than 15 grains per foot of the cord, e.g., less than 12 grains per foot of the cord, or a loading in the range of from 8 to 12 grains per foot of the cord. The coil may consume about six inches of the cord.

Abstract: The present invention provides a two-part adapter for more securely holding a blasting cap initiator in place in a demolition or munitions device. This adaptor is an insert component, generally cylindrical in shape and having an inner diameter capable of surrounding a blasting cap initiator, and a locking component. The insert component has a first threaded portion to mate with threaded cap wells of demolition and munitions devices, and a second portion with a plurality of flexible prongs arranged circumferentially around its inner diameter. The locking component is also generally cylindrical in shape and has a threaded inner surface to engage the insert component. The locking component also has a portion of decreasing inner diameter to approximately the inner radius of the insert component, and an outer surface with means to permit application of a turning torque.

Abstract: Group firing system for firework unit, wherein it has 1-2 paper fuse tubes, which are assembled with other shot tubes. While both ends of the paper fuse tubes have male socket and female socket, so each firework unit could be connected to a firework group through soft fuse hose which contains a fuse inside. There are two firing systems, i.e. series connection and parallel connection.

Abstract: A block connector for holding both a detonator, having an explosive end, and signal lines. The connector has a body member and a cover. The body member has an elongated, open, base and a connector head at one end of the base. The connector head holds the signal lines. The base has a support for supporting the detonator in an operative position with its explosive end in at least close proximity to the signal lines held in the connector head. The cover is locked to the base over the detonator when the detonator is mounted on the support in the operative position and a retainer on the cover retains the detonator in the operative position. The cover preferably is separate from the body member.

Abstract: A device for connecting the fuse of two firework devices is provided. The device has a tubular member, or connector, having a first and second end. The ends of the connector are each adaptable to receive a fuse. When the device is in operation, two fuses, each from a separate firework, are inserted into the connector. This ensures that the flame from one fuse will be effectively transferred to the next. The device may also contain a primer such as gunpowder within the interior of the connector to further ensure transmission of a flame from one fuse to the next.

Abstract: A booster to relay a detonation train from a detonating cord to another booster includes an explosive and a shell. The shell has an open end to receive an end of the detonating cord and an indented closed end that is adapted to form a projectile to strike the other booster when the explosive detonates. The explosive may include at least fifty percent by weight of NONA, and in some embodiments, the explosive may be primarily NONA.

Abstract: A connector block having an elongated body with an end wall at one end. A resilient, cantilever arm extends from one side of the end wall over the wall to the other side of the wall and terminates in a free end at the other side of the end wall. The arm is spaced from the outer face of the end wall to define, with the outer face, a slot that snugly receives signal lines. The cantilevered arm is tapered in thickness toward its free end in a manner to have the end wall curl back over itself when the block is used by exploding a detonator carried by the block.

Abstract: A detonator device and assembly for the initiating a plurality of signal transmission lines with a pressure impulse. The detonator device comprising a detonator casing having a signal receiving end and a firing end. The firing end of the detonator device being substantially shaped to conform with the pressure impulse initiation therein. The firing end having a contact wall of substantially uniform thickness for contacting a plurality of signal transmission lines in a compatible connector element and transmitting a pressure impulse thereto.

Abstract: An initiator (14c) for a secondary explosive receptor charge is provided by forming a length of detonating cord (14) into a helical coil containing a plurality of windings with a cutoff barrier provided by, e.g., a separating rib (46) between adjacent windings. The adjacent windings may be not more than about 0.5 inch (12.7 mm) apart. The detonating cord (14) may be wound about a spindle (16) which may optionally provide the separating rib (46). The coil may be a tapered coil which may define a taper angle of e.g., from about 2 to 4 degrees. Alternatively, the coil may be a cylindrical coil, or the cord may be configured in a planar spiral. Optionally, the detonating cord in the helical coil may have a core of explosive material with a loading of less than 15 grains per foot of the cord, e.g., less than 12 grains per foot of the cord, or a loading in the range of from 8 to 12 grains per foot of the cord. The coil may consume about six inches of the cord.

Abstract: A pyrotechnic device of connection and delay between detonating cords and/or between an igniter and detonating cords, including a cavity divided up in two parts, the internal walls of which are coated with a very flammable material; a means for blocking one or several detonating cords in each of the parts; and a means for communicating between the two parts. The two parts are separated by a partition and the communication means includes a track containing a slowly and regularly burning material, extending outside the cavity walls between openings communicating with each of the two cavity parts.

Abstract: A detonator device and assembly for the initiating a plurality of signal transmission lines with a pressure impulse. The detonator device comprising a detonator casing having a signal receiving end and a firing end. The firing end of the detonator device being substantially shaped to conform with the pressure impulse initiation therein. The firing end having a contact wall of substantially uniform thickness for contacting a plurality of signal transmission lines in a compatible connector element and transmitting a pressure impulse thereto.

Abstract: A linear ignition system for a metal-sheathed linear explosive including in one embodiment the ends of two metal-sheathed linear explosives are connected by a non-electrically conductive sleeve leaving a gap between the ends, and a Pyrofuze® bridge connects the metal-sheath of one end to the metal sheath of the other end. Electrical contacts are made to the two metal sheaths and application of current to the electrical contacts ignites the Pyrofuze® bridge and the linear explosives. Embodiments can also include an explosive mixture in the gap, using a hotwire bridge, or including booster increments for initiating detonating explosives. The linear ignition systems offer robust, easy-to-install linear explosive devices for applications in automotive, commercial or military aircraft safety systems, other military and aerospace applications, and commercial blasting.

Abstract: A tubular charge holder assembly for a perforating gun made of a tube having a plurality of pairs of diametrically opposed openings. The pairs of openings are formed over a length of the tube, wherein the each pair has a larger and a smaller opening. A shaped charge is located within the pairs of openings in the tubular charge holder so that at least a portion of the rim of a front face of the shaped charge extends out of the larger opening and at least a portion of a rear face of the shaped charge extends out from the smaller opening of the tube. A detonating cord is helically wrapped around the outside surface of the tube such that the detonating cord is positioned so that the cord is proximate to the rear surface of each of the shaped charges installed within the tube. A substantially semi-circular clip is positioned on the outside surface of the tube proximate each of the shaped charges.

Abstract: A linear ignition system for a metal-sheathed linear explosive including in one embodiment the ends of two metal-sheathed linear explosives are connected by a non-electrically conductive sleeve leaving a gap between the ends, and a Pyrofuze® bridge connects the metal-sheath of one end to the metal sheath of the other end. Electrical contacts are made to the two metal sheaths and application of current to the electrical contacts ignites the Pyrofuze® bridge and the linear explosives. Embodiments can also include an explosive mixture in the gap, using a hotwire bridge, or including booster increments for initiating detonating explosives. The linear ignition systems offer robust, easy-to-install linear explosive devices for applications in automotive, commercial or military aircraft safety systems, other military and aerospace applications, and commercial blasting.

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: A block connector for holding both a detonator, having an explosive end, and signal lines. The connector has a body member and a cover. The body member has an elongated, open, base and a connector head at one end of the base. The connector head holds the signal lines. The base has a support for supporting the detonator in an operative position with its explosive end in at least close proximity to the signal lines held in the connector head. The cover is locked to the base over the detonator when the detonator is mounted on the support in the operative position and a retainer on the cover retains the detonator in the operative position. The cover preferably is separate from the body member.

Abstract: A shock tube connector system comprises a substantially cylindrical detonator having a longitudinal axis a block body receiving the detonator therein, and an end cap. The detonator includes an axisymmetric exterior shell including a cylindrical main section, a cylindrical explosive end portion having a diameter less than the diameter of the main section, and a transition portion connecting the main section and the explosive end portion of the shell. An explosive charge is contained within the explosive end portion of the shell and is distributed along the longitudinal length of the explosive end portion. The explosive charge preferable comprises two portions of lead azide or a first charge portion of lead azide and PETN and a second charge portion of PETN. An initiating shock tube is operatively connected to the explosive charge via a delay element. The block body includes a housing within which the main section of the detonator is received.

Abstract: The present invention is a linear ignition system for a metal-sheathed linear explosive. In one embodiment of the invention, the ends of two metal-sheathed linear explosives are connected by a non-electrically conductive sleeve leaving a gap between the ends, and a Pyrofuze® bridge connects the metal-sheath of one end to the metal sheath of the other end. Electrical contacts are made to the two metal sheaths and application of current to the electrical contacts ignites the Pyrofuze® bridge and the linear explosives. Embodiments including an explosive mixture in the gap, using a hotwire bridge, or including booster increments for initiating detonating explosives, are also described. The linear ignition systems of the present invention offer robust, easy-to-install linear explosive devices for applications in automotive, commercial or military aircraft safety systems, other military and aerospace applications, and commercial blasting.

Abstract: A breaching device for controlled blasting of an object at short range includes a blasting element including an explosive charge contained within a housing, the blasting element being configured to blast the object from a preset distance. Connected to, and extending from, the housing is a stand-off rod having a length equal to the preset distance. A pyrotechnic lead pellet is associated with the blasting element and with the stand-off rod so as to detonate the explosive charge upon impact of the stand-off rod with the object. A tail is provided for stabilizing the device during its flight to the object. The tail is connected to the blasting element through a “safe and arm” device and a safety connector configured to reduce shock forces acting on the tail resulting from detonation of the explosive charge.

Abstract: A gun system in one arrangement includes a first carrier including a detonating cord and a second carrier including a detonating cord. An adapter couples the first and second carriers, with the adapter including an explosive coupled to the detonating cord of one of the first and second carriers. The explosive is positioned in a reduced housing portion of the adapter. The reduced housing portion of the adapter has a first outer diameter less than an inner diameter of the first carrier to provide a predetermined annular space between the reduced adapter portion and the inner diameter of the first carrier. At least one of the detonating cords in the first and second carriers is attached to a retainer element, and the retainer element is placed in close proximity to the explosive to maintain an axial position of the detonating cord to reduce separation between the detonating cord and the explosive.

Abstract: A fuse igniter adapter assembly that adapts various fuse cord sizes to a firing device for ignition by a primer. The assembly includes a hub subassembly, four retaining blades, a circular slide element, a circular cap element, a spring, and a snap ring.

Abstract: A shock tube connector system comprises a substantially cylindrical detonator having a longitudinal axis a block body receiving the detonator therein, and an end cap. The detonator includes an axisymmetric exterior shell including a cylindrical main section, a cylindrical explosive end portion having a diameter less than the diameter of the main section, and a transition portion connecting the main section and the explosive end portion of the shell. An explosive charge is contained within the explosive end portion of the shell and is distributed along the longitudinal length of the explosive end portion. The explosive charge preferable comprises two portions of lead azide or a first charge portion of lead azide and PETN and a second charge portion of PETN. An initiating shock tube is operatively connected to the explosive charge via a delay element. The block body includes a housing within which the main section of the detonator is received.