Abstract: A shell fuse has a target acquisition sensor, such as an impact sensor, and a firing train in which a firing device carrier is movable from a safe position into an armed position. Overflight safety all the way to the target is afforded in a simple manner. There is provided a force element, in particular a pyrotechnic trigger device, which can be initiated by the response of the sensor. The force element is coupled to the firing device carrier such that the firing device carrier is movable into the armed position.

Abstract: A method of using electrically initiated primer systems that rely on vaporizing a thin metallic film which is either coated on a non-conductive insulator component or is a malleable thin film or strip secured to the inner surface of a primer cup assembly to ignite an environmentally safe MIC composition.

Abstract: Group firing system for firework unit, wherein it has 1–2 paper fuse tubes, which are assembled with other shot tubes. While both ends of the paper fuse tubes have male socket and female socket, so each firework unit could be connected to a firework group through soft fuse hose which contains a fuse inside. There are two firing systems, i.e. series connection and parallel connection.

Abstract: A two-stage acceleration sensing apparatus is disclosed which has applications for use in a fuze assembly for a projected munition. The apparatus, which can be formed by bulk micromachining or LIGA, can sense acceleration components along two orthogonal directions to enable movement of a shuttle from an “as-fabricated” position to a final position and locking of the shuttle in the final position. With the shuttle moved to the final position, the apparatus can perform one or more functions including completing an explosive train or an electrical switch closure, or allowing a light beam to be transmitted through the device.

Abstract: An electronically controlled multi-pulse ignitor ignites a cartridge used to launch a projectile. An electronics module is programmed with a temperature performance profile for the cartridge. A temperature sensor is coupled to supply current cartridge temperature data to the electronics module. A first event ignitor is coupled to the electronics module and initiates a ballistic cycle upon command from the electronics module. A translation mechanism, including a first charge coupled to the first event ignitor, moves the projectile forward to increase the free volume in the cartridge. A second event ignitor, coupled to receive a second event ignition signal from the electronics module, ignites the main propellant charge on receiving the second event ignition signal from the electronics module, where the timing of ignition of the second event ignitor is determined by the temperature performance profile and the current cartridge temperature data.

Abstract: A pyrotechnic initiator is provided with an encapsulation material retention feature on the output can rather than on the header assembly. For example, the bottom of the output can of the pyrotechnic initiator may be swaged over the bottom of the header assembly and/or it may be stamped with anchors.

Abstract: Short repeater rifle with a barrel, which has on one of its ends a cartridge receiver; a locking system; a trigger assembly with a trigger and a trigger guard; a firing mechanism; a magazine; and a targeting device, characterized in that the center of gravity of the short repeater rifle lies in front of the trigger guard in the shooting direction.

Abstract: An airburst hand grenade constructed so as to jump 1–2 m above the ground before detonating. The hand grenade includes a detonator, a warhead, and support legs for raising the hand grenade from a horizontal position to an upright position once it has landed after being thrown. The detonator includes a delay unit, an upper charge which releases the support legs, a jump charge which propels the warhead into the air, and an explosive cartridge which initiates a main charge. Because the grenade detonates above ground, the fragments are spread essentially horizontally and at an angle to the ground and consequently attack the target from above, which results in a much larger target surface and the capability of spreading fragments behind a shelter.

Abstract: A firearm receiver system including a receiver body, an ammunition belt feeding assembly and a bolt carrier. The receiver body includes a first face and a second face approximately opposite the first face. The receiver body is configured for having means for triggering engaged therewith at the first face and for receiving belt-fed ammunition through the second face. The ammunition belt feeding assembly is mounted at least partially on the receiver body and the ammunition belt feeding assembly is configured for supplying the belt-fed ammunition to the receiver body through the second face. The bolt carrier is movably mounted on the receiver body between the first and second faces of the receiver body and the bolt carrier is configured for being actuated by gas-energized piston-driven means.

Abstract: The present invention relates to a device for electronically arming and firing a MEMS-scale interrupted explosive train to detonate a main charge explosive. The device includes a MEMS slider assembly housing a transfer charge electrically actuated to move between safe and armed positions of the explosive train.

Abstract: The invention provides an explosive round that produces fragments propelled by jetting effect, the round consisting in a firing head, an explosive charge, a fragment generating wall in direct contact with the explosive, which wall has a set of indentations extending towards the inside of the round and into the explosive, so that each indentation constitutes a shaped charge, wherein the indentations of the fragment-generating portion are in the form of caps extending inside the explosive, each cap presenting a surrounding base having a diameter comprised between 2.5 mm and 5.5 mm and a wall thickness comprised between 0.5 mm and 0.8 mm, so that each cap generates a corresponding fragment propelled by jetting effect, fragment which has no effectiveness beyond 35 m from the point of explosion.

Abstract: A stealth weapon module (10) including a weapon support cage (11) and a weapon (12), with the weapon module (10) able to be stowed beneath a retractable hard roof (15). The roof (15) is raised and lowered by a hydraulic motor (16), and includes a stabilizing cloth (15b) that keeps the roof (15), made of interconnected slats (15a), from pulling apart or otherwise changing shape as it is raised and lowered, even at rates of travel of several inches per second. The weapon module (10), with any of various different roof designs including the retractable hard roof (15), can be incorporated into either a transportable shell (20), able to be moved from one application to another, or can be built into (and so specially adapted to) a structure, such as the back/cab of a sports utility vehicle.

Abstract: A top cover and safing sector assembly of a 7.62 mm Gatling machine gun, commonly known as a minigun, incorporates integral latch assemblies that cooperate with top cover and safing sector latch keepers conventionally provided on such machine guns to facilitate opening of the top cover independent of the safing sector or, alternatively, opening of the entire top cover and safing sector assembly, both of which are accomplished without the use of prior art ball locking pins and the need for removal and attendant risk of loss thereof.

Abstract: A shot pellet that, has an inner core of a material such tungsten carbide, that is coated with a layer of bismuth. This coating is molecularly bonded to the tungsten carbide and is not an alloy. The unique properties of the shot pellet allow its density to be tailored. Under this process, the effective density of the pellet can be made to be identical to lead for direct replacement in current lead loading formulations. Additionally, the density can be made to be lower than lead for shotguns requiring low barrel pressures, or higher than lead for enhanced energy transfer while maintaining the other advantages of the instant invention.

Abstract: Grenade launchers for attachment to gas-operated service rifles and carbines such as the M16 and M4 are improved by providing them with a trigger assembly that enables the shooter to deliver repeated hammer strikes to the primer of the loaded grenade without having to open the breach to reset the hammer and signals final aim indication via added trigger pull force.

Abstract: A trigger system for an automatic handgun includes a trigger bar sized to be installed in an interior space behind a trigger by movement from the magazine well. The trigger bar is first inserted into the inlet opening of the magazine well and into the interior space which includes a front cavity having a pair of spaced apart upper shoulders and lower shoulders that limit movement of the trigger bar upwardly and forwardly respectively. The interior space further includes a rear cavity that includes a pair of spaced apart lower ledges and a pair of spaced apart rear walls for limiting the rearward and downward movement of the trigger bar. The front cavity is adjacent the trigger and trigger guard. The rear cavity is formed within the handgrip. The trigger system and method is specifically designed for a Colt 1911 .45 pistol with an enlarged magazine well inlet opening for receiving an enlarged stagger magazine.

Abstract: The invention is a multi-shot launcher adapted to launch ring airfoil projectiles. Each ring airfoil projectile is coupled to a sabot, the ring airfoil projectile and sabot mounted to a housing in a cartridge form. The cartridge has a length which is less than its diameter. The launcher includes a receiver defining a cartridge receiving area and a tubular passage through which the ring airfoil is launched from a fired cartridge. The launcher includes a trigger mechanism for firing a cartridge. The launcher includes an ejector for ejecting the housing of a spent cartridge from the receiving area and a loader for loading a new cartridge into the receiving area. The cartridge may be loaded from a magazine connected to the receiver.

Abstract: Provided is a novel summer gasoline composition which is substantially free of ethers, contains less than 20 ppm sulfur, and is in compliance with the California Predictive Model. The gasoline composition is suitable for use in the summer, i.e., having a Reid vapor pressure of 7.2, and more preferably 7.0 or less, but also offers the advantages of low-emissions while being substantially free of ethers. The method for blending the gasoline comprises blending streams from a refinery in a controlled manner to maintain compliance with the California Predictive Model.

Abstract: An improved apparatus and method for determining the carrier frequency in a biphase coded signal such as the course acquisition code signal in a global position sensing system. The described system may also be used for other purposes. The described system is based on use of the conventional data signal squaring or frequency doubling step to remove biphase coding but performs a series of frequency reducing steps prior to applying the Fourier transformation sequence. The frequency reducing steps include heterodyne mixing and signal averaging. These frequency-reducing steps diminish the speed and capacity requirements imposed on the Fourier transformation sequence and thereby decrease the cost and complexity of the overall system.

Abstract: Total combustion and evaporative emissions from gasoline pump fuels can be controlled with total emissions no higher than those currently allowed by the addition of an evaporative factor such as RVP to the model predicting emissions, based on a number of considerations including the sensitivity of emission parameters (toxics, hydrocarbons, CO and NOx) as related to the variables in the predictive model (oxygenate content, sulfur, T90, T50, aromatics, olefins, benzene and RVP). The present pump gasolines will normally have compositions including T10 no greater than 140° F., T90 no greater than 330° F., RVP no greater than 7 psi and usually lower and sulfur no greater than 50 ppmw. Oxygenates may be eliminated, permitting T50 values to increase which is not unfavorable from the viewpoint of total emissions provided other parameters are held within specified limits. Aromatics, olefins and benzene are normally held to maximum of 35, 10 and 1 vol % respectively to achieve satisfactorily low total emissions.