21results about "Fuse connectors" patented technology

Embodiments of the disclosure are directed to a shock initiation system for initiating shock in a shock tube for demolition. In some embodiments, the shock initiation system comprises a reusable discharge unit and a replaceable shock initiation platform. The reusable discharge unit may comprise a power source, a timer, a switch, and user inputs and may function to store a time, countdown the timer, and generate and transmit an electrical energy to the replaceable shock initiation platform. The shock initiation platform may receive the electrical energy from the discharge unit overpowering a resistor disposed on the shock initiation platform. The resistor may then detonate providing an initiation shock to a proximally disposed shock tube, thereby initiating shock in the shock tube.

The invention relates to an oxygen candle with a compact electric starting structure, and belongs to the technical field of chemical oxygen generators. According to the oxygen candle, the groove is formed in the oxygen generating explosive block, the starting mix column is arranged in the groove, the starting mix column and the oxygen generating explosive block are tightly combined together through pressing by adopting an integrated forming technology, the two different materials are fused to a certain degree on the intersection face, and heat transfer and continuation of the combustion face are promoted; the electric igniter is fixed in the mounting groove of the starting mix column, the electric igniter adopts the electric ignition head to replace a resistance wire in the prior art, an open circuit can be quickly formed after the electric igniter is electrified, and the situation that judgment of an external control end on the state of an oxygen candle is affected by short circuit is avoided; the electric igniter can be tightly matched with the starting mix column, and the electric igniter cannot fall off to cause starting failure in the processes of production, transportation and the like.

Proposed is an alloy composition for a thermal fuse that melts when heat is detected in a sprinkler. When the fuse melts, the head of the sprinkler starts operating. The alloy composition is a low-melting point alloy composition based on bismuth, indium, tin, and silver.

The invention relates to a device and method for reducing explosive excitation noise, the device comprises an explosive column, a detonating piece is arranged in the explosive column, the detonating piece can detonate the explosive column, the outer side of the explosive column is sleeved with a pressure-resistant sleeve, a lead is fixedly connected to the detonating piece, and the explosive column is fixedly connected with the pressure-resistant sleeve. And the lead extends out of the side wall of the compression-resistant sleeve. The method has the effects that the intensity of lateral vibration excited by the explosive source is reduced, and noise generated by near-surface vibration is weakened.

In an ignition unit for a propellant charge (8), comprising an elongated ignition transfer charge (2) made of propellant powder, through which a free ignition channel (5) runs in its longitudinal direction, and a combustible support tube (3) that surrounds the ignition transfer charge (2) perpendicular to the free ignition channel (5), the ignition transfer charge (2) is formed from a first material which has a glass transition point below -40°C in an observed temperature range of -51°C to +71°C, and the support tube (3) is formed from a second material which does not have a glass transition point below +72°C.

A Combustion igniter cord with enhanced power. Combustion igniter cord for a propellant charge contained in the case of a cartridge, said igniter cord consisting of a core comprising a pyrotechnic material and surrounded by a sheath. The sheath consists of two concentric cylindrical tubes between which is arranged a free powder energetic material. Both tubes are made of an inert polymer material or contain an extruded energetic propellant powder material or one tube may be made of an inert polymer material and the other may contain an extruded energetic propellant powder material.

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.

Increased power combustion ignition cord Combustion ignition cord of a propellant charge contained in the case of a cartridge, said cord being constituted by a core comprising a pyrotechnic material and surrounded by a sheath, characterized in that the sheath is constituted by two concentric cylindrical tubes between which is arranged a loose powder energetic material. The two tubes are made of an inert polymer material or be based on an extruded propellant powder energetic material or one of the tubes may be made of an inert polymer material and the other be based on an extruded propellant powder energetic material.

Ignition cord for combustion of a propellant charge contained in the case of a cartridge, said cord being constituted by a core comprising a pyrotechnic material and surrounded by a sheath, in which the sheath is constituted by two concentric cylindrical tubes between which is arranged an energetic material in loose powder, characterized in that one of the two tubes is based on an energetic material in propellant powder extruded in a block and that the other of the two tubes is based on an energetic material in propellant powder extruded in a block or made of an inert polymer material.

Enhanced combustion ignition cord: An ignition cord for the combustion of a propellant charge contained within a cartridge case, said cord consisting of a core comprising a pyrotechnical material and surrounded by a sheath, characterized in that the sheath consists of two concentric cylindrical tubes between which is arranged a free-flowing powdered energy material. The two tubes are made of an inert polymer material or are based on an extruded powdered energy material, or alternatively, one of the tubes may be made of an inert polymer material and the other of an extruded powdered energy material.

The invention discloses a liquid gas energy rock breaking device energy increasing and transduction component which comprises a shell, carbon powder is arranged in the shell, an ignition bridge wire is arranged in the carbon powder, a pre-combustion enhancement layer is sprayed on the surface of the ignition bridge wire, the pre-combustion enhancement layer comprises potassium perchlorate and phenolic resin, and the mass ratio of the potassium perchlorate to the phenolic resin is 9: 1. The ignition bridge wire is led out of the shell through an ignition lead. The porosity of the carbon powder is greatly reduced through compaction treatment, the problems of caking and moisture absorption in a low-temperature (-100 DEG C or below) liquid gas environment are solved, the chemical property stability is improved by 60% or above compared with loose carbon powder, the ignition activity can still be kept under the extreme impact working condition, and the pain point that a traditional material is prone to failure is solved.

The utility model relates to a kind of detonating cord quick connecting device in detonating cord connection technical field, containing the tee joint of main cord insert sleeve part and branch cord insert sleeve part, the outer end inner wall of branch cord insert sleeve part is equipped with snap spring for the tight hoop detonating branch cord, the inner end port of branch cord insert sleeve part is connected with the limiting stop piece corresponding the corresponding end face of detonating branch cord;The detonating cord quick connecting device can improve the connection quality and connection efficiency of detonating cord.

A connector for use with detonation device(s) associated with an explosive detonation system is provided. The connector includes a body, a lower channel, a first side channel, and a second side channel. The body has a first end and a second and is centered on an axis. The first end and the second end are positioned along the axis. The body defining a main channel with a first main end and a second main end. The body main, lower, first side and second side channels are configured to receive first, second, third and fourth detonation device, respectively.

The application relates to a device and a method for reducing explosive excitation noise, which comprises an explosive column, the inside of the explosive column is provided with an initiating device, the initiating device can initiate the explosive column, the outside of the explosive column is sleeved with a pressure-resistant sleeve, the initiating device is fixedly connected with a lead wire, and the lead wire extends from the side wall of the pressure-resistant sleeve. The application has the effects of reducing the lateral vibration intensity of an explosive seismic source and weakening the vibration noise generated by the near-surface.

Embodiments of the disclosure are directed to a shock initiation system for initiating shock in a shock tube for demolition. In some embodiments, the shock initiation system comprises a reusable discharge unit and a replaceable shock initiation platform. The reusable discharge unit may comprise a power source, a timer, a switch, and user inputs and may function to store a time, countdown the timer, and generate and transmit an electrical energy to the replaceable shock initiation platform. The shock initiation platform may receive the electrical energy from the discharge unit overpowering a resistor disposed on the shock initiation platform. The resistor may then detonate providing an initiation shock to a proximally disposed shock tube, thereby initiating shock in the shock tube.

A positioning tool (12, 112, 212) is configured to engage and be longitudinally moved along a length of entwined wires. The tool comprises a spreader member (14, 14', 14") which has retainer passages (14a, 14a', 14b, 14b') spaced from each other to define a fixed distance (D) between them. The positioning tool is engaged with entwined wires (16a, 16b) to place a respective entwined wire within each retainer passage (14a, 14a', 14b, 14b') so that in the vicinity of the spreader member of the positioning tool the retained wires are separated from each other by the fixed distance (D). Fixed distance (D) corresponds to the desired distance between wires for attaching the wires to a connector clip or other connector.