184results about "Firecrackers" patented technology

A longitudinal launcher tube made substantially of polyurethane resin or plastic having a rear end closed by a transverse rear wall and an open front end. The invention allows a projectile to be housed in the tube and adapted to slide longitudinally inside it towards the front, to be expelled from it via the front end tube, means for defining with the tube and projectile a rear gas expansion chamber immediately to the rear of the projectile, and an impulse cartridge adapted on command to develop gas pressure in the rear chamber to cause the expulsion of the projectile via the front end of the tube. The apparatus is a pyrotechnic device for rigidly supporting fireworks such as mortar-type, rocket-type, projectile-type, and other pyrotechnic devices so that the launcher device is reusable, whereby the launcher substantially retains its integrity after each launch to minimize harm caused to persons and the environment.

A mixed 'firecracker-fireworks' having the effects of firecracker and fireworks and generating 5 colors is prepared from potassium perchlorate, Mg-Al alloy powder, strontium carbonate, phenolic resin, polyvinyl chloride, strontium nitrate, sulfur, glutinous rice flour, etc. Its advantages are simple preparing process, dual effect, multiple color and long perdurability.

The invention provides a fireworks outer barrel mechanically molded by a hydraulic mold at high temperature. The fireworks outer barrel is characterized in that the fireworks outer barrel is made of materials which include, by weight, 6-30 parts of starch, 4-50 parts of plant fibers, 20-60 parts of filling mixture, 1-12 parts of catalyst and 4-25 parts of stabilizer by the steps of mixing and high-temperature molding by the hydraulic mold. A manufacturing process of the fireworks outer barrel has high production efficiency and can realize flow-line production of the fireworks outer barrels. As compared with conventional paper outer barrels, the fireworks outer barrel need short time for drying, and especially in seasons with rainy days, the advantage in drying time is much more remarkable. In addition, the materials for making the fireworks outer barrel are degradable materials, the outer barrel of fireworks which are set off can be used as fertilizer after being degraded, and safety in setting off is guaranteed.

Gas Projection Device that can take many external forms that simulate military munitions being exploded and that contain features that enhance the sound of the explosion and the appearance of smoke and attendant percussion. Such device can be controlled by many different means including electronic remote control.

A diversion device capable of generating a disorientating flash and a disorientating sound without an explosion has a housing with a cavity containing an inert gas, a piston and a powder. The powder creates the flash via ignition after exiting the device. The device also includes a mechanism configured to ensure the powder encompasses the device upon exit and does is not dispersed in a substantially horizontal plane. In addition, the device may include devices capable of creating a disorientating sound as the inert gas escapes the device.

A long-distance blast banger including a cartridge loaded with a blast banger made up from plastic material. The blast banger encompasses a sound explosives cup and a delay cup. The sound explosives cup is loaded with a sound explosives agent having components including perchloryl potassium, magnesium powder and aluminum powder. A sufficient sound value is acquired through appropriate compacting of the sound explosives cup, and therefrom realizes uniform shattering of the cup into small fragments that are insufficient to cause injury. Furthermore, at least two helical grooves extending from a bottom to a top of the cartridge are defined on an inner wall thereof, and ear attachments are configured on a base of an outer wall of the blast banger so as to correspond with the helical grooves, thereby engendering a spinning stability effect during flight time of the blast banger, reducing wind resistance, and thus increasing flight range.

One aspect of the invention provides a firing apparatus that provides an arcuate visual effect. The firing apparatus includes a motor, an enclosure housing the motor and an arm connected to a shaft of the motor for moving a pyrotechnic device such as a gerb. Another aspect of the invention provides a pyrotechnic system that includes a firing apparatus including a reciprocal motor, a firing arm having a first end connected to a shaft of the reciprocal motor and a second end adapted to emit an arcuate pyrotechnic effect, a control unit in communication with the firing apparatus for controlling operation of the reciprocal motor and an ignition unit in communication with the firing apparatus for initiating the pyrotechnic effect.

The invention relates to a safe, environment-friendly and energy-saving exposed firecracker, which can solve the defects of present product which is not safe. The invention comprises a base for stuffing medicine, a sealing cut above the medicine, and lead wire. A metallic sheath is arranged between the inner wall of cylinder base and the medicine, whose lower end is embedded into base; the lower part of base is inserted into a protective frame with lead wire outlet. Compared to present technique, the invention has the advantages that: 1, high safety without injecting high-speed matters; 2, environment protection without left matters; 3, lower cost and the application for batch production, with controllable producing process.

A fireworks device, including a number of light effect devices as a replacement for traditional pyrotechnic stars. Each light effect device includes electrical/electronic light sources, preferably high-intensity light-emitting diodes, an energy-storage device and a control device. The light effect device for use in such a fireworks device can be used together with a fireworks system, a fireworks rocket and a ground firework in which the firework device is included.

A compressor casing includes a casing insert with a flexible element in the force flux between the insert wall contour and the outer compressor casing. The flexible element is assembled from a support ring and ribs, wherein the ribs axially in front of the support ring and the ribs axially behind the support ring are arranged in an offset manner in relation to each other. Due to the arrangement of the ribs in an offset manner, the axial force flux between the insert wall contour and the outer compressor casing is deflected twice, and an axially compliant flexible construction is achieved.

The invention discloses an environment-friendly minimum smoke firecracker, composed of a high sounder, an igniting wrapped powder on the surface of the high sounder, a lead wire and a casing layer. The high sounder has a lead-free high sounder as a sounder of the firecracker; the igniting wrapped powder has smokeless igniting powder, ingredient and weight proposition of which is as follows: nitrated cellulose 60 to 90 parts; ammonium perchlorate 10 to 40 parts; antiodorant 5 parts; and strong rubber powder 2 parts; the finished product of firecracker is produced by wrapping the lead-free smokeless sounder with smokeless paper and the smokeless lead wire, so as to ensure each step of setting off firecracker is contamination free such as smoke, pungent smell, residue, etc., and implement minimum smoke and even smokeless effect.

Disclosed is an outer tube of fireworks with bottom, whose characteristics is that its main component are haulm fiber, glass fiber, calcium sulfate, light filler, cement of high level and bond. It is formed by once overall stamp by special machine and natural drying, the product has U-typed bottom, a layer of kraft paper enclosing the outer wall of tube, and its appearance, size and length can be ordered by the size needs of different fireworks products. The invention has the advantages of abundant raw material, advanced technology, excellent chemical and physical stability, stable shape, resistance to humidity, high intension and notable safety, which can be widely used in outer tube of various fireworks products.

A temporary airborne image is formed by the steps of arranging a plurality of projectiles in each of one or more barrel assemblies wherein the projectiles include image forming matter; firing a predetermined number of the plurality of projectiles from selected barrel assemblies; and deploying the image forming matter to form a temporary airborne image.

A multiple effect pyrotechnic shell (20), having a lift chamber (22), primary break (24), secondary break (26), and a tertiary break (28) has a desired weight distribution to inhibit tumbling. The secondary break weight is less than the primary break weight, and the tertiary break weight is less than both the primary and secondary break weights. Thus, the center of gravity of the shell (20) is positioned below a midpoint of the shell height. A first timing fuse (46) extends from a lift charge (30) into a primary break charge (50A) of the primary break (24), and a primary internal timing fuse (64) extends from the primary break (24) to the secondary break (26). Further, a secondary internal timing fuse (70) extends from the secondary break (26) to the tertiary break (28). Fuse fragments (52) are preferably disbursed within the break hulls (48) to provide filler and add an additional effect to each break (24-28).

A firecracker packaging is provided which enables both carrying a single ignition detonation of a large number of firecrackers in an attractive package resembling a giant firecracker. At least one and preferably a plurality of spiral-wound strings of firecrackers having interconnected fuses are stacked together in a substantially cylindrical stack, covered by wrapping, and a handle extends from one end of the wrapping. The handle is preferably a length of line. Binding is positioned between the strings and the wrapping to retain the cylindrical configuration of the strings. Connecting fuses between adjacent strings permit ignition of the woven individual firecracker fuses in one string to lead to ignition of the woven individual firecracker fuses of the adjacent string.

The present invention discloses treading firecracker. Raw materials of the treading firecracker comprise: 2-8% wt of starch, 1-7% wt of magnesium sulfate, 2-8% wt of potassium chlorate or potassium permanganate, 17-23% wt of haematitum, 43-49% wt of silica and 17-23% wt of phosphorus. The treading firecracker is prepared through the following steps: carrying out steps of sieving, mixing, water adding and stirring for the raw materials to prepare viscous emulsion; then extruding the viscous emulsion into strips, then carrying out slitting, drying and coloring to prepare the treading firecracker. According to the present invention, the treading firecracker kindling does not require a kindling material for igniting, and the treading firecracker does not need to be thrown on a hard object and collided with the hard object, such that the generation of finger burning can be avoided, the fire disaster can further be avoided. The treading firecracker does not contain sands, such that the splashing of the sands can not be generated, and the human body and the property can not be damaged. In addition, the treading firecracker has characteristics of convenient operation and use, good igniting effects of happiness, appreciation and the like, safety and reliability, and especially be suitable for the children to be played with.

It relates to a fire cracker without powder core but composed of hydrogen and oxygen or the mixture of hydrogen and oxygen of a sealing container. Ignite the guide line of the gas container in use, using the mixed gas ignition to generate explosion. It is free from powder, with improved making safety, with water generated after explosion, without much pollution to the environment than the traditional ones.

The invention discloses a firecracker firing and recovering device, and belongs to the field of firework and firecracker firing equipment. A firing barrel is arranged at the upper end of a bottom plate; a light concentration disc is arranged at the lower end in the firing barrel; two stepping motors are mounted on two sides of the firing barrel at the upper end of the bottom plate; an output shaft of each stepping motor is connected with an upright column; outside threads are formed in the circumference of each upright column; a connecting block sleeves the outside threads of each upright column and is fixedly connected with a lifting plate; the lower end of the lifting plate is fixedly connected with a hanging device; an incandescent lamp is mounted at the lower end of the lifting plate; and a lampshade is mounted at the periphery of the incandescent lamp; the upper end of the lifting plate is fixedly connected with a battery box which supplies power for the incandescent lamp; and a control cabinet is arranged on the bottom plate and is connected with the stepping motors. The firecracker firing and recovering device fires a firecracker by generating heat through light concentration and has the recovering function to firecracker skin generated after the firecracker is fired.