524results about "Detonators" patented technology

A wireless digital launch or firing system has a transmitter unit that can transmit separate RF signals representing an "enable" code sequence and an "actuate" code sequence, and a receiver unit which decodes the "enable" code sequence to enable receipt of the "actuate" code sequence, and decodes the "actuate" code sequence to actuate launching or firing. A digital processor receives the code sequences from a receiver circuit and compares them to stored digital code sequences. A memory latch maintains a normally-off primary switch in an "on" condition when the "enable" signal is received. A normally-off secondary switch is set to an "on" condition when the "actuate" signal is received. Preferably, the RF signals are transmitted in pulse code form, and the code sequences include bits that are predetermined and stored in the hardware, bits that are selected for an individual code by the user, and bits that differentiate the "enable" from the "actuate" signal. The memory latch can be set to an indefinite "enable" period, for multiple launchings, or a timed "enable" period, for toys or single launch devices. A sequencer module can be coupled to the receiver unit for sequenced firings.

An assembly including a support housing and an actuator device. The actuator device includes an extendable initiator cup including at least one non-random fold and at least in part defining a storage chamber containing a reactive charge reactable to produce reaction products. The extendable initiator cup longitudinally extends from a first length to a second, greater length upon reaction initiation of the reactive charge. The extendable initiator cup is at least partially disposed within a longitudinally extending bore of the support housing. The support housing is effective to limit lateral expansion of the extendable initiator cup upon reaction initiation of the reactive charge. The assembly can include an electrical conductive member or an electrical switch. The extendable initiator cup can extend to sever the electrical conductive member or disengage the electrical switch, thereby interrupting the conduction of electricity through an electrical system. Alternatively, the extendable initiator cup can extend to engage the electrical switch thereby allowing the conduction of electricity through an electrical system.

A detonator system for borehole systems which include detonating cord exposed to borehole fluids, pressures and temperatures. A firing head has a sealed chamber for an electrically fired detonator and has a booster charge holder forming part of the seal. The chamber is sealed by a wire line firing sub and by the booster holder. The charge holder includes a bulkhead separating the detonator chamber from a booster charge chamber and providing part of the detonator chamber seal. The detonator explosive and the booster charge are positioned on opposite sides of the bulkhead so that upon detonation of the detonator, the bulkhead is ruptured and the explosion transfers to the booster charge and from it to the detonating cord. The firing head includes holes for attachment of borehole tools such as perforating guns or back off tools to be fired by the detonating cord.

A device and method that employs a detonation event as an energy source for producing a pyrotechnic output. The device includes an initiation charge that is selectively detonated by an exploding foil initiator. Byproducts from the detonation event are attenuated by a barrier that is disposed between the initiation charge and an ignition charge. The barrier participates in a chemical reaction with the detonation byproducts to oxidize and burn. In this regard, the barrier serves as a fuel that is employed to ignite the ignition charge. The device includes a sealed housing in which the initiator, initiation charge and ignition charges are housed. The housing ruptures in response to the heat and pressure generated by the ignited ignition charge to release the pyrotechnic output.

A secure authorization server computer system for verifying an identity of an end-user is provided. The computer system is programmed to receive, from a computing client, an authentication request at an authorization component. The authentication request includes a secure authentication request identifier. The computer system is also programmed to validate the authentication request at the authorization component by validating the secure authentication request identifier. The computer system is further programmed to transmit an authentication response from the authorization component to the computing client. The authentication response includes an authorization code. The authorization code represents a validation of the authentication request.

A spontaneous firing explosive composition for use in a gas generator for an airbag containing a fuel, an oxidizer, a combustion modifier, and a binder.

The invention relates to an efficient and automatic group-sanding latch waist-bayonet machine for detonators. The bayonet machine comprises a rack, a special mould, a play-off reel and an electric or pneumatic control device, wherein the rack is provided with the special mould, a group-sending latch waist-bayonet mechanism and a thread feeding mechanism; a group-sanding detonator latch waist and a group-sanding detonator bayonet are integrated on one machine for continuous operation, and more than ten latch waist-bayonet operations can be completed in one work process, thereby greatly improving production efficiency, saving production personnel and reducing labor cost; equipment is compact, thereby greatly reducing detonator production workshops and occupied areas; the whole assembling process is carried out automatically, and dangerous latch waist-bayonet operations are carried out in a protective armor, accidents of operating personnel injury caused by detonator explosion during latch waist and bayonet operations can be avoided, and operation is safe and reliable, thus the latch waist-bayonet machine is suitable for being used in the electric detonator or explosive detonator assembling process.

Mixtures of high explosives with materials that readily absorb microwaves ignite more readily when exposed to microwave energy than the corresponding neat explosives. A charge of HMX (0.5 gram) mixed with carbon nanotubes (1 percent by mass) ignited with 7.5 joules at an average rate of 750 W for 10 milliseconds. To raise a charge of the same mass of neat HMX to an autoignition temperature of 200 degrees Celsius would require much more energy (about 110 joules) for a longer duration (about 150 milliseconds).

A fuze explosive train device for detonating a munition that uses a stab firing pin within a pressure cartridge, with the stab firing pin located between a gas generator and a stab detonator. The firing pin is capable of transferring an energy from the gas generator into the stab detonator in a manner that initiates the stab detonator to a high order explosive reaction. A method of initiating a stab detonator using a stab firing pin also is disclosed.

An igniter includes: an igniter assembly including an igniter main body having an ignition portion adapted to be ignited by an ignition electric current; an igniter collar which accommodates the igniter main body; a cup body having an opening portion, the igniter assembly and the cup body being connected to each other, such that at least the ignition portion of the igniter main body is surrounded by the cup body; and a tubular crimp case that connects and fastens at least a part of an exterior surface of the igniter collar and at least a part of an exterior surface of the cup body from an outside.

The invention discloses a production system of nonel detonators. The production system includes a material feeding mechanism, a material taking mechanism, a waist clamp mechanism, a carrier, a driving mechanism, a transmission mechanism, a rubber plug assembling mechanism, a mouth clamp mechanism, a guidance mechanism and a nonel processing mechanism. A basic detonator of the nonel detonator is arranged on the material feeding mechanism. The material taking mechanism is disposed on the material feeding mechanism and is disposed slidingly between the material feeding mechanism and the waist clamp mechanism. The carrier is arranged at an output end of the waist clamp mechanism. The rubber plug assembling mechanism and the mouth clamp mechanism are respectively arranged at one side of the transmission mechanism. The driving mechanism is arranged on the transmission mechanism. The guidance mechanism is arranged at one side, which is far away from the transmission mechanism, of the mouth clamp mechanism. The nonel processing mechanism is disposed at one side, which is far away from the mouth clamp mechanism, of the guidance mechanism. The production system can automatically process and assemble the nonel detonators, and not only is high in production efficiency but also can reduces operators and production cost.

The present invention provides an automatic production line assembly process with functions of artificial detonator feeding, automatic bayonet assembly, laser marking, automatic detection and the like, and a special related apparatus. The simple process comprises that: at a feeding working position, a lot of igniters are fixed on a special transporting trolley in columns by a staff; the transporting trolley moves along a conveying track, and the integrated igniter and a detonator shell are integrally pressed by a bayonet at an automatic bayonet assembly working position; at a laser marking working position, the detonator is engraved and marked during advancing; the bayonet appearance and the laser marking quality are detected through the machine vision, and if the unqualified product exists, the unqualified product is automatically removed, the transporting trolley returns to the unloading working position, the finished product is taken out by the staff, the transporting trolley returns to the feeding working position so as to complete the one production process; and a plurality of the same transporting trolleys perform pipeline operations so as to form the automated detonator production line. The process of the present invention has characteristics of high automation degree, high production efficiency, human-machine isolation operation, high safety, and good application prospects.

A signal transmission fuse is made of a tube (36) which encases a support tape (14) having a reactive coating (18') which is adhered to one side of the tape by a binder. A method of making the signal transmission fuse includes depositing on the support tape (14) a reactive paint (18) including a binder, which paint dries to form a reactive coating (18'). The coated support tape (14') is then folded, i.e., formed into a channel configuration, to provide an inner concave side of the tape on which the reactive coating (18') has been disposed. The coated support tape is then enclosed, e.g., within an extruded plastic tube (36). One side of the support tape may be made of a first material (14a) to which the reactive coating adheres, and a second side may be made of a second material (14b) which bonds or adheres to the inner surface (36a) of the plastic tube (36) enclosing the coated support tape (14'). The binder causes even high loadings of the reactive coating (18') to adhere to the coated support tape (14') to prevent reactive material migration. The support tape also shields the reactive material from the hot, freshly extruded surrounding plastic tube (36) during manufacture.

An igniter enabling the normal ignition of a gas generating agent even if the adhered state of a firing charge to a plug is eliminated by vibration or shock and a gas generator having the igniter. The igniter comprises the plug (13), two or more electrode pins (14) passed through the plug (13) and having head parts (25), a bridge wire (16) connecting at least two electrode pins (14) among the electrode pins (14) across the head parts (25), and the firing charge (10) ignited by the bridge wire (16) energized through the electrode pins (14). The plug (13) is formed of a hardened material of a thermosetting resin composition. The electrode pins (14) allowing the bridge wire (16) to be connected to the head parts (25) thereof are passed through the plug (13) at a specified distance (A) between the head parts (25) and the plug (13), and at least the head parts (25) and the bridge wire (16) are surrounded by the firing charge (10) in the form of a solid body and fixed to the plug (13).

Embodiments of the present subject matter provide an improved percussion primer composition and improved hot-wire igniter acceptor, wherein lead styphnate is replaced with a lead-free material, 4,6-dinitro-7-hydroxybenzofuroxan, potassium salt (KDNP). Embodiments of the percussion primer composition include KDNP, a sensitizer, an oxidizer, calcium silicide, a fuel, and a binder. Sensitizers may include tetracene. Oxidizers may include alkali or alkaline earth nitrates, oxides, or peroxides (such as barium nitrate). Fuel materials may include metals, metal sulfides, or other non-metallic materials. Common binders may include nitrocellulose based shellacs, gum arabic/poly vinyl alcohol mixtures, and guar gum/poly vinyl alcohol mixtures. Embodiments of the hot-wire igniter device include a bridgewire, an acceptor, and an output, where KDNP is the acceptor. Power supply may be in the form of constant current/voltage or current flow from a capacitor discharge. Certain embodiments utilize a variety of output formulations, such as BKNO₃, black powder, and Red Dot double base propellant.

The invention provides an automatic assembly, detection and marking method and system for an electronic detonator. The automation degree can be significantly improved by the method and the system; multi-station parallel production can be achieved through cooperation with a packaging box transport mechanism; the production efficiency is high; the quality and stability of a product are good; man-machine isolation operation of dangerous procedures of feeding, closing, detecting and laser marking of the most dangerous basic detonator in detonator production is completely achieved; the security is extremely high; the new function requirement of binding of a novel electronic detonator password, a UID code and a detonator body laser code can be achieved; and therefore, the automatic assembly, detection and marking method and system for the electronic detonator have extremely high popularization values and application prospects.