Abstract: A fuse having a protective jacket is utilized, for example, in petroleum exploration at large depths where the fuse must withstand high temperatures and pressures. The jacket is produced from a shrinkable hose that is shrink-fitted onto the unfinished cord which latter contains an explosive. The hose consists preferably of radiation-crosslinked polyethylene. The use of a shrink-fitted hose eliminates long preparation and curing times for the synthetic resin jacket. The process temperatures required during heat shrinking are no threat to the safety against ignition of the explosive. It is possible in accordance with the process to manufacture, in particular, fuses for high pressures and high ambient temperatures, without any problems.

Abstract: A device for igniting a propellant charge is provided with a housing defining a cavity wherein a piston is displaceably guided. The cavity is connected via a bore acting as a nozzle to a chamber wherein a case member of a cartridge is arranged for accommodating the propellant charge. A bottom wall of the case member is equipped with a bore aligned with the bore acting as a nozzle. A primer wafer is disposed on the inner surface of the bottom wall, this wafer being thinner in its central zone than in its marginal zone. The central zone of the primer wafer is a region under mechanical thermal stress during compression, the ignition energy being introduced to the primer wafer via this region in the form of hot compressed air from the compression chamber.

Abstract: In a mine capable of righting itself, laying devices for sensor lines are attached on the outside to the topside of a mine housing. During storage and during transport, the laying devices are, in their initial position, in close contact with the topside of the mine housing. Upon distribution of the mines over the terrain, the laying devices are spread away from the topside of the mine housing and transferred into their effective position so that the sensor lines can be ejected at an angle of about 45.degree. inclined with respect to the vertical.

Abstract: The present invention deals with the continuous production of sodium azide from sodium amide and nitrous oxide. This reaction takes place on a support material for sodium amide consisting of a mixture of sodium azide and sodium hydroxide. This mixture is passed through a reactor maintained at temperatures of between 200.degree. and 270.degree. C.; a portion of the reaction product and the support material are transferred out of the system at an end of the reactor, and a primary quantity of the reaction product and support material are returned to the reactor inlet where the material is combined with fresh, heated sodium amide in an amount corresponding to the quantity of sodium azide transferred-out with the reaction product and support material. With the aid of this continuous process, higher space-time yields of sodium azide can be obtained than in case of the conventional methods without increasing the danger of no longer controllable explosions.

Abstract: A parachute associated with an object unfolds faster in an airstream if the object is first accelerated in the direction of descent. This principle can be applied advantageously to a mine system combating military targets from the air because the time between starting from an ambush position in the terrain to the onset of searching movements in the air can be shortened.

Abstract: Fragments, also in the shape of projectiles with a length to diameter ratio greater than 3, can be successfully accelerated directly by means of an explosive if at least one forward casing in the frontal zone of the fragment causes the shock wave generated by detonation of the explosive to pass from the fragment into the forward casing, which subsequently detaches from the fragment thus protecting the fragment from the destructive effects of the reflected shock wave.

Abstract: The present invention pertains to fin-stabilized projectile ammunition, in which fin-stabilized projectiles are arranged in a cartridge case filled with propellant charge powder. According to the present invention, the spaces between the fins of the tail plane (4) of the fin-stabilized projectile (13) are filled with prefabricated shaped bodies (7) made from propellant charge powders. These shaped bodies in the ammunition are adjacent to the propellant charge powder in the cartridge case, and permit optimal utilization of the free space between the tail plane fins (20) of the projectiles being filled with high-energy propellant charge. Furthermore, the shaped bodies according to the present invention prevent corrosion of the tail plane fins during the burning off of the ammunition, and facilitate the manufacture of the ammunition.

Abstract: A wool-wax substitute and a process for its formation are disclosed where the wool-wax substitute is the product of esterification of 1 mole of a glycerol-polyglycerol mixture with:(a) from 0.5 to 1.1 moles of a saturated aliphatic monocarboxylic acid having from 6 to 10 carbon atoms, or mixtures thereof;(b) from 0.5 to 1.1 moles of an unsubstituted straight chained saturated aliphatic monocarboxylic acid having from 16 to 22 carbon atoms, or mixtures thereof;(c) from 0.0 to 0.6 mole of an aliphatic saturated branched-chain monocarboxylic acid having from 16 to 18 carbon atoms;(d) from 0.0 to 0.5 mole of a saturated monocarboxylic acid having from 16 to 20 atoms and containing hydroxyl groups, or mixtures thereof, and(e) from 0.5 to 1.0 mole of saturated aliphatic dicarboxylic acids having from 4 to 10 carbon atoms, or mixtures thereof.The wool-wax has a hydroxyl number ranging from 20 to 100 and acid and iodine numbers under 5.

Abstract: A safety mounting system in a launching device for rockets also provides a safe rocket conveying device by virtue of an additional locking arrangement. The locking arrangement establishes a shape-mating connection between the rocket and a launch tube preferably by use of a pin engaging into a bore in the launch tube. Prior to launching of the rocket, the pin is retracted by a pyrotechnical power element. The firing ballistics of the rocket are not impaired by this additional safety feature.

Abstract: In fuse elements of layered structure with long delay times, misfires, occur, above all, if aggravating secondary conditions prevail (such as, for example, high projectile rotation and/or temperature stresses and shock stresses). The safe progression of the reaction through the element is enhanced by providing that, as seen in the propagation direction of the reaction, the central zone of a charge igniting a delay charge projects into a central region of the delay charge. An additional improvement can be achieved by interposing between the ignition charge and the delay section, one or several relay charges and by making the choice of the charge components so that the discontinuities of the characteristic values (especially of the reaction rate) become more even and thus smaller, or by utilizing an ignition charge having a particularly low reaction rate.

Abstract: The fixation of the barrel housing to the breech housing in a break-open gun is controlled by a top lever breechblock, the bottom of which carries, in a groove, countersunk, a connecting member with an eccentric tenon in a displaceable fashion, the tenon being insertable in one of two bores in a control part, and the control part driving the breechblock wedge or wedges, wherein at least one spring between the control part and the breechblock wedge absorbs, when the control wedge is not worn, a distance increment so that the breechblock lever during locking can always go back into a central position. The gun can readily be refitted from a right-hand shooter to a left-hand shooter: the connecting member is rotated by 180.degree. and inserted in the opposite bore, the spring stop is likewise turned, and the breech spring is exchanged with the pressure bolt and the stop bolt.

Abstract: The reliability of a cartridge ejection device can be improved by the interposition of a readily deactivatable control flap, arranged on the outside of a monobloc unit, between a control bolt and a cartridge ejector of a break-open gun-housing of at least one barrel. The arrangement has the advantage wherein when no shot has been fired, the ejector will move into the extended position gradually during tilting of the barrel. When a shot has been fired, the ejector will remained tensioned until the barrel has been entirely tilted. Another advantageous feature is obtained by constructing the cartridge ejector of two parts coupled by way of a spring, namely a cartridge extractor and an extractor element, because thereby stress peaks can be further reduced and the cartridge extractor can already be entirely in the retracted position even before the barrel is completely closed.

Abstract: Ring pellets for gas generators exhibit optimum reaction rates by having configurations which optimize such rates. The pellet has a central ignition duct; from the latter, outlet channels extend radially toward a rim of the pellet. Specific embodiments contain, on the topside and underside of the pellets, either conical recesses or annular channels or both. The pellets preferably exhibit a proportion of surface area/unit weight of from 4 to 7 cm.sup.2 /g, which can be set by variation of the channels and, respectively, of the recesses to obtain a desired value. The higher this value, the greater the reaction rate. The ring pellets are especially well suited for airbag generators which must display differently high reaction rates on the driver's side and on the front-seat passenger's side, and which are to exhibit at the same time a high breaking and abrasion stability.

Abstract: By the installation of elastic elements between a rocket and a retaining sleeve (or, respectively, a retaining sleeve and a launching device, or within a launching device), peak loads are reduced and breakage of a connecting member or, respectively, of the parts of the retaining sleeve corresponding to this connecting member is avoided.

Abstract: In fuse elements of layered structure with long delay times, misfires, occur, above all, if aggravating secondary conditions prevail (such as, for example, high projectile rotation and/or temperature stresses and shock stresses). The safe progression of the reaction through the element is enhanced by providing that, as seen in the propagation direction of the reaction, the central zone of a charge igniting a delay charge projects into a central region of the delay charge. An additional improvement can be achieved by interposing between the ignition charge and the delay section, one or several relay charges and by making the choice of the charge components so that the discontinuities of the characteristic values (especially of the reaction rate) become more even and thus smaller, or by utilizing an ignition charge having a particularly low reaction rate.

Abstract: In a gas generator for an airbag of a vehicle, a chamber is provided around a cylindrical pressure reservoir filled with gas-releasing materials. The chamber contains a filter and is traversed over its entire length by a gas stream produced from the gas-releasing materials along a cylindrical outer surface. Such a gas generator is especially suitable for an airbag intended to prevent primarily only the impacting of the driver's head against the steering column while the other protective functions, which are otherwise also to be carried out by an airbag in a vehcle as the sole protective device, are taken over by a safety belt.

Abstract: A method for producing a caseless propellant charge is disclosed wherein a polynitro polymer having an aromatic or heterocyclic ring is employed as a binder with a solvent and a propellant to produce an admixture and the admixture is molded into a shaped charge body.

Abstract: For the purpose of welding one side of a metallic foil to a relatively thick-walled metal tube, it is proposed to cover the foil from the other side in an annular fashion with a similar or identical tube section also made of metal and to join the tube and the tube section from the outside by means of welding, e.g., plasma welding; in this procedure, the welding bond is not allowed to extend through the entire tube wall thickness. In this way, tubular elements such as cylindrical casings of primer caps can be made tight, which primer caps can be filled from the front in a simple way, but wherein it has thus far been difficult to test for the reliability of the cover formed over a primer charge.

Abstract: By providing a cover of heat-resistant fabric over a pressure tank of a gas generator for an airbag, the objective can be attained that the outer exposed surface of the covered gas generator is not heated up to an excessive degree. Moreover, due to this feature, the proportion of solid and liquid, hot particles in the gaseous streams discharged from the gas generator can be additionally reduced.

Abstract: By interposing, in a detonator/igniter (or igniting) element directly initiatable by a laser pulse, a layer of adequate absorbance over the optical spectral region, which layer can be faded out at the wavelength of the detonator laser, into the beam path, then the layer acts as a switch preventing light other than the laser pulse intended for triggering from setting off detonation of a primary charge within the element. The switching function, i.e., the intensity at which a laser pulse is allowed to pass through, depends on the spectral characteristics of the bleachable absorber and should range between 10.sup.7 and 10.sup.12 W/cm.sup.2. The bleachable absorber is a passive element offering considerable protection from erroneous triggering by light other than the intended laser pulse; it can be manufactured and integrated into the element in an inexpensive and controllable way and does not require any substantial raising of the energy of the laser.