1861results about "Explosive working-up apparatus" patented technology

The present invention provides a method of making polymer ammunition having a metal injection molded primer insert.

Structures can be formed from a composition, which can be referred to as a biopolymer, that includes fermentation solids and thermoactive material. Methods of making biopolymer products include for example extruding, injection molding, or compounding fermentation solid and thermoactive material. Structures formed from biopolymer can include lumber replacements, window components, door components, siding assemblies, and other structures.

The present invention relates to an igniter composition which is capable of being extruded to yield a robust igniter extrudate. The composition is particularly useful in the form of an igniter stick or other selected geometry for use in supplemental safety restraint systems designed for use such as in vehicles, ground or airborne, having such systems.

In accordance with the invention, bodies of materials are joined by disposing between them a reactive multilayer foil and one or more layers of meltable joining material such as braze or solder. The bodies are pressed together against the foil and joining material, and the foil is ignited to melt the joining material. The pressing is near the critical pressure and typically produces a joint having a strength of at least 70-85% the maximum strength producible at practical maximum pressures. Thus for example, reactively formed stainless steel soldered joints that were heretofore made at an applied pressure of about 100 MPa can be made with substantially the same strength at a critical applied pressure of about 10 kPa. Advantages of the process include minimization of braze or solder extrusion and reduced equipment and processing costs, especially in the joining of large bodies.

An inventive check is disclosed including a barcode, which includes at least one of the following pieces of information: the date the check was paid, the amount of the check, the payee, the drawers account number, the banks routing number, and the identifier number of the check. A method for preventing check fraud is also provided, including the steps of attaching a machine readable code on a negotiable instrument, creating a negotiable instrument, the drawee receiving the negotiable instrument, and the drawee scanning the machine readable code. A method is also included for integrating the entire checking process. The invention also includes methods for including payee information on an invoice, as well as for determining available funds and creditworthiness of customers. Also included is a method for controlling spending.

A hybrid rocket motor is manufactured by photopolymerizing the solid fuel grain in a stereolithography method, wherein fuel grains in a plastic matrix are deposited in layers for building a solid fuel rocket body in three dimensions for improved performance and for a compact design,

The invention relates to an integrated side-push box filler, which is structurally characterized in that: a bid assembly is arranged on a bid rack; the bid rack and a box turning device are arranged on a rack respectively; a box turning roller way assembly is directly connected with the rack; two large brackets of a box blank supply assembly, a cylinder seat of a side absorption box assembly, a box baffle plate, a bag baffle cylinder, a cylinder seat of a bottom absorption box assembly, a box supporting oral plate, a box delivery link plate, a box supporting plate, a carton folding hammer assembly mounting frame, a mounting frame for three sets of carton folding assemblies and a rack of a laminated assembly are arranged at the corresponding positions of the rack respectively; an electric cabinet and a gas source cabinet are arranged and fixed inside the rack respectively; electric wires and gas pipes are connected with the corresponding components by adopting slots; the electric cabinet controls the motion of all cylinders; and the gas source cabinet is connected with all sucking discs respectively. The integrated side-push box filler has the advantages of simple structure, stable working state, easy operation, convenient adjustment, small floor area and integral structure.

The present invention relates to flares and other solid propellant devices, rockets or the like, equipped with an igniter or igniter system which is based in whole in part on an extruded igniter stick.

An explosive material composition containing, as an active ingredient, particles of a water-soluble reactive ingredient having an uniform particle size. Each particle is coated with an oil ingredient and/or a thickener. The coated particles form an agglomerate.

The invention relates to a sulfur-free nitrogen-free high-temperature-resistant environment-friendly firework propellant and a preparation method thereof, and belongs to the technical field of fireworks and crackers. The sulfur-free micro-smoke high-temperature-resistant firework propellant is prepared from the following components in parts by weight: 55-75 parts of polytetrafluoroethylene with the particle size of 50-300 microns; 5-25 parts of aluminum powder with the particle size of 5-75 microns; 5-25 parts of zinc powder and 5-15 parts of copper powder with the particle size of 5-75 microns; 2-10 parts of calcium silicate with the particle size of 20-150 microns; 0.5-5 parts of a silane coupling agent; and 1-5 parts of an energetic binder. The preparation method adopts the processes of chemical modification, coating, powder mixing, granulation, drying and the like, and is simple in process, free of special process requirements, low in cost and convenient for batch production. The obtained product has the advantages of no sulfur, slight smoke, no environmental pollution, low impact or friction sensitivity, high temperature resistance, static resistance, high safety and the like, and can be widely applied to the production of propellant powder for fireworks and crackers.

Disclosed are thermite charges for use in well perforation and downhole fracing. The thermite charges have a core, and optionally a case, where at least one of the core and the case includes thermite material.

The present invention refers to a process for manufacturing ammunition labeled with a sequence of characters which allows identification multiple data items, being said sequence of characters (1) laser-engraved, in one or more components of said ammunition, affording positive identification upon retrieval of an engraved component of said ammunition, even if it is already spent.

A microporous polyolefin membrane comprising a polyethylene resin, and polypropylene having a weight-average molecular weight of 6×10⁵ or more and a heat of fusion of 90 J/g or more (measured by a differential scanning calorimeter), a fraction having a molecular weight of 1.8×10⁶ or more being 10% or more by mass of the polypropylene.

The present invention relates to energetic cocrystals, and to methods for using the same for treatment of a subterranean formation. In various embodiments, the present invention provides a method of treating a subterranean formation, the method including obtaining or providing a composition including energetic cocrystals. Each energetic cocrystal independently includes an energetic compound and a secondary material. The method also includes placing the composition in a subterranean formation.

On an upper surface of a container body, there are disposed at least a base portion of a concentration meter configured to detect the concentration of a liquid reducing agent based on a heat transmission characteristic between two spaced points, and a heat exchanger configured to permit the engine coolant to circulate therein and arranged to surround a detecting section of the concentration meter, which hangs from the base portion of the concentration meter via a supporting column thereof, to thereby perform the heat exchange with the liquid reducing agent, and also, a protector or an encasing element of substantially box shape is arranged to surround a lower portion of the heat exchanger and the detecting section of the concentration meter, and further, a visor is attached on the supporting column of the concentration meter, which is positioned above the protector by a predetermined interval.

In this process for producing a black body decoy flare, a composition which, when combusted, provides black body radiation is extruded. The compositions generally include from about 40% to about 70% metal such as magnesium or aluminum, from about 10% to about 40% polytetrafluoroethylene, and from about 8% to about 30% binder. Important to the operation of the invention is the production of carbon upon combustion of the composition. Accordingly, polyaromatic thermoplastics, such as polystyrene and dimethyl phthalate, serve as the binder.

The invention relates to a polydopamine interface regulation-based nitramine explosive modified aluminum powder and a preparation method thereof. Micron-sized crystals containing an aluminum powder and a nitramine explosive are prepared by an anti-solvent process, uniform distribution and close contact of the aluminum powder and the nitramine explosive are achieved, and the crystals have the advantages of compact structure, high thermal stability and high density. The adoption of the polydopamine interface regulation-based nitramine explosive modified aluminum powder in an aluminum-containingexplosive reduces the content of an adhesive and additives in a formula, increases the mass fraction of the main explosive, and achieves the purpose of developing high-energy explosives. In addition,a part of the energetic material adopted to replace RDX, HMX, CL-20 and other nitramine explosives in traditional solid propellants improves the energy level of the propellants, improves the problem of too large viscosity of a propellant slurry, caused by the addition of nano-aluminum powder or high-aluminum powder, and optimizes the preparation technology of the propellants.

An explosive destruction system and method for safely destroying explosively configured chemical munitions. The system comprises a sealable, gas-tight explosive containment vessel, a fragment suppression system positioned in said vessel, and shaped charge means for accessing the interior of the munition when the munition is placed within the vessel and fragment suppression system. Also provided is a means for treatment and neutralization of the munition's chemical fills, and means for heating and agitating the contents of the vessel. The system is portable, rapidly deployable and provides the capability of explosively destroying and detoxifying chemical munitions within a gas-tight enclosure so that there is no venting of toxic or hazardous chemicals during detonation.

A compression-resistant emulsified explosive for coal mine features that the composite emulsifier prepared from anhydrosorbitol monooleate and polyisobutene butanediimide and the technique for sensitizing the chemical foaming agent are used.

The present invention generally relates to gas generant compositions for inflators of occupant restraint systems, for example. An extrudable pyrotechnic composition includes polyvinylazoles for use within an airbag gas generator. The fuel may be selected from exemplary polyvinylazoles including 5-amino-1-vinyltetrazole, poly(5-vinyltetrazole), poly(2-methyl-5-vinyl) tetrazole, poly(1-vinyl) tetrazole, poly(3-vinyl) 1,2,5 oxadiazole, and poly(3-vinyl) 1,2,4-triazole. An oxidizer is combined with the fuel and preferably contains phase stabilized ammonium nitrate. A novel method of forming the compositions is also presented wherein the various constituents are wetted and/or dissolved, and then cured within the polyvinylazole matrix thereby forming a more intimate combination within the gas generant composition. A vehicle occupant protection system 180, and other gas generating systems, incorporate the compositions of the present invention.