Abstract: A high precision electro-mechanical fuze mechanism for a munition such as a hand grenade. The fuze mechanism includes an electromagnetic signal generator having an armature, a permanent magnet, a coil and a magnetic impulse generator (MIG) member. The armature is preloaded during assembly through the use of a spring. Releasing an actuating lever of the grenade allows the armature to begin spinning and to dissipate the energy stored by the spring. This causes a current to be electromagnetically generated in the coil, which is transmitted to an electronic control circuit in the fuze mechanism. The electronic control circuit implements two time delays from two separate timers which each must time out before the control circuit can send an electric firing signal to an electric detonator. Movement of the armature also causes a simultaneous movement of a rotor, which moves a stab detonator into a position closely adjacent the electric detonator.

Abstract: Migration of Di-Octyl Adipate (DOA) from PBXN-9 main charge into an adjacent PBXN-5 booster charge is the leading cause for unreliable and inefficient detonations when these two insensitive munition explosives are in close proximity. A hermetic seal of metal foil is interposed between the booster and main charges to block migration of DOA chemicals between the charges. This prevents plasticizing and/or desensitizing the booster charge and possible catastrophic accidental detonations or highly undesirable explosive desensitization which might create unexploded ordnance. The hermetic seal may also have a first portion of metal foil covering the surface of a bore in the booster charge and second portions of metal foil covering the surface of bores in the main charge.

Abstract: A munitions fuze implements an operating mechanism comprising a piston, operating rod and toggle body bearing a detonator, aligned in a cavity within a munitions housing. In the safe condition the toggle body is out of line with a transfer lead and output booster arranged to charge an explosive when activated by the detonator. Overlying the piston is a primer and a piezoelectric device and primer that, when impacted by a striker produces pressurized gas for driving the piston and electricity for an electronic delay circuit. The piston moves the operating rod to bring the toggle body and detonator into alignment with the transfer lead and booster for detonation.

Abstract: A fire extinguishing device to reduce or extinguish a fire in a specific localized area such as a room or a hallway within a burning building. A base with a disbursement container fixed to the base is provided to hold an explosive charge and a volume of fire extinguishing agent. When the explosive charge is detonated, the extinguishing agent is forced out of the disbursement container in an upward direction to subsequently shower down upon a fire in the vicinity of the detonated fire extinguishing device to at least in part extinguish the fire in the localized area.

Abstract: Avalanches, such as snow avalanches, are triggered with an explosive char The charge is propelled into a potential avalanche slope and detonated therein. The explosive charge is first located in a tube which is closed at one end and which also houses a propelling charge with which the explosive charge is propelled from the tube into the avalanche slope.

Abstract: A fragmentation grenade comprises a quantity of high explosive (11) contained within a casing (12, 13) and means (29) for detonating the high explosive (11) so as to cause the casing (12, 13) to disintegrate into a plurality of high velocity fragments (13). The high explosive (11) and the casing (12, 13) are so configured that the fragments (13) are preferentially projected in one or more particular directions relative to the axis (X--X) of the casing (12, 13), and the grenade is provided with a self-righting mechanism (22), whereby the axis can automatically be placed in a desired orientation.

Abstract: A distraction device having a fuse assembly and a body which body has a sealed storage area for energetic pyrotechnic material. The device when operated produces noise and light without ejecta or forces of propulsion.

Abstract: A fuse plug pyrotechnic firing device includes a body, a pyrotechnic train, firing pin and a driving device. The body has an axis and a bore disposed along the axis. The pyrotechnic train is disposed along the axis and includes an upper part and a lower part. The firing pin has a firing pin axis and is disposed within the bore between the upper part and the lower part. The firing pin is also disposed to ignite the lower part. The driving device is coupled to the firing pin and to the upper part. The driving device drives the firing pin to move along the firing pin axis and to ignite the lower part, the firing pin rotating about the firing pin axis under pressure of gases generated by the ignition of the lower part. As a result, safe and effective operation of the fuse plug pyrotechnic firing device is ensured.

Abstract: Delay igniter plug for pyrotechnic machine, in particular manual or mechanical launch grenade, comprising a body (4) fitted with a control mechanism comprising a trigger lever (1) and a percussion mechanism (28) interacting with a primary pyrotechnic module provided with a primer (3), a retardant composition (9), a primary explosive (13) which are capable of ensuring initiation of the charge of the associated machine which is arranged so that the primary explosive (13) cannot be initiated without going via the retardant composition, the primary pyrotechnic module (5) being axially displaceable in the said body toward the principal charge, means (2) for holding the primary pyrotechnic module (5) axially separated from the principal charge (19) and a screen (12a, 15) interposed between the principal charge and the terminal part of the primary pyrotechnic module containing the primary explosive (13), characterized in that the means (2) for holding the primary pyrotechnic module (5) axially separated from the pri

Abstract: Grenade comprising an incendiary element (3) which is situated in a retainer (1) projecting into a bore (5) in a charge (10) in the grenade shell. The incendiary element (3) has been pressed into the retainer (1) and is situated behind a transfer or booster charge (4). The retainer (1) may be mainly circular- cylindrical, in order to permit that both the incendiary element (3) and the transfer or booster charge (4) can be pressed over the entire cross section of the retainer (1).

Abstract: A safety fuze for a hand grenade comprises a fuze body, a delay case assembly, an initiator lever assembly, and a cover assembly. The fuze body has a head, a stem, and a central portion, and a bore extending longitudinally therethrough. The delay case assembly is matingly received in the bore and includes an upper primer portion containing a primer in a primer holder, and a lower delay portion. A flat, circular seal is interposed between the base of the primer and the primer holder. A first annular seal is matingly received in a first annular channel defined between the primer holder and the delay case. A second annular seal is matingly received in a second annular channel defined between the delay case assembly and the bore. An annular gasket is matingly received in a third annular channel formed in the bottom wall of the central portion of the fuze body.

Abstract: A stun grenade includes a tubular housing to slidably receive a munitions canister. A cup-shaped end cap closes one end of the housing and frictionally engages an outer wax-coated surface of the housing adjacent the end. At the other end a fuze retention disk is retained in the housing and has a threaded opening to receive any one of several possible fuze assemblies. When using a manually operable fuze, the handle thereof is provided with a color-coded coating to identify the nature of the explosive charge provided in the grenade. The handle also has one or more lumps formed thereon to provide a tactile code, consistent with the color, to identify the grenade type. The fuze retention disk includes spikes establishing a fixed spacing between the munitions canister and the fuze held in the fuze retention disk.

Abstract: A grenade with dual fuses for simulating small arms fire comprises: a hollow cylindrical housing including a first threaded end and a second open end; a main filler charge being located within the housing proper; means for covering the end of the main filler charge which is adjacent the housing open end; means being compressively connected to the housing open end for securing the main filler charge within the housing; a main igniting fuse being fitted onto the housing threaded end; a cup shaped member being located inside the housing in between the main igniting fuse and the main filter charge; a propelling charge being located in between the cup shaped member, the housing threaded end, and the main igniting fuse; a first straight fuse being responsive to the main igniting fuse and being located in between the main igniting fuse and the main filler charge; a second L-shaped fuse being responsive to the main igniting fuse and being located in between the main igniting fuse, the propelling charge, and the cup s

Abstract: Multiple use grenade, characterized in that it principally consists in the combination of a telescopic grenade (2) of a type in itself know, for example a grenade capable of being launched with the assistance of a rifle, and a fuse-plug (1) for a hand grenade, also of a type which is known.

Abstract: A stun grenade for producing a non-lethal explosion. The stun grenade includes an elongated grenade body having a hollow interior, an open first end, and a closed second end; an ignitor fuse for creating an ignition spark when activated, the ignitor fuse being attached to and closing the open first end of the grenade body; and an explosive substance positioned within the interior of the grenade body at the second end thereof for exploding when the ignitor fuse means creates an ignition spark.

Abstract: A fragmentation device includes a core of munitions in the form of a sphere. The sphere of munitions is surrounded by a spherical outer shell of a rubberized material. Further provide is a fuze at the surface of the internal rubberized material which is an electrical communication with a detonator which is embedded within the spherical core of munitions. The rubberized spherical shell is provided with spherically symmetrical fractures which radiate out from the core to insure a symmetrical dispersion of the force associated with the detonated munitions core.

Abstract: Stun grenade includes a steel housing having a steel tubular body with steel end members brazed to the ends of the tubular body, and a brass collar member threadably received in a threaded central opening in one of the end members for supporting an explosive charge in the housing. At the inner end of the collar member is a cylindrical portion to which a tubular container filled with the explosive charge is attached. The outer diameter of the tubular container is less than the minimum diameter of the threaded opening in the one end member to permit the tubular container to be inserted through the threaded opening while attached to the collar member. At the outer end of the collar member is a threaded recess for threaded receipt of a fuse member externally of the housing. A flash hole in the collar member directs a flash which is produced when the fuse member is activated into the tubular container to ignite the explosive charge.

Abstract: A safety fuze for a hand grenade comprises a fuze body, a delay case assembly, a detonator assembly, an initiator lever assembly, a cover assembly, and a pull ring assembly. The fuze body has a head, a stem, and a central portion, and a bore extending longitudinally therethrough. The delay case assembly comprises a delay case matingly received in the bore and having an upper primer portion containing a primer, a lower delay portion containing ignition, delay and penetration charges, a sealant separating the primer portion from the delay portion, and an air gap separating the primer portion from the ignition charge. The detonator assembly comprises a detonator case matingly receiving the fuze body stem at the top thereof and being in sealing engagement with the fuze body, and has an explosive detonator charge at the bottom thereof. A gap is provided between the fuze body bottom and the explosive charge.

Abstract: Anit-vehicle grenade of the type comprising a head (1) extended by a tubular tail (8), an axial bore (6) going through the head and running into the bore (7) of the tubular tail (9), characterized in that, between the safety device (3), respectively the detonator 4 placed assymmetrically with respect to the axis A--A of the grenade, on the one hand, and the hollow charge (2) of the grenade, on the other hand, means of transmission of the shock wave caused by the detonator (4) are mounted allowing to obtain a firing that is symmetrical about the axis of said hollow charge (2).

Abstract: An ignition transfer medium for interconnecting the ignition and pyrotechnic stages of a pyrotechnic device comprises activated fibrous carbon, such as activated charcoal cloth, on which an inorganic oxidizer and possibly other substances have been deposited.

Abstract: Fragmentation shell for grenades, particularly hand-grenades, consisting of a hollow body, the wall of which is made of metal particles embedded in plastic and which has a form stretched out of the spherical, e.g. an egg-shaped. The wall of the fragmentation shell in the transition zone between bottom surface and side surface and/or between shoulder surface and side surface has an axially symmetrical thickening, with an increased density of metal particles compared with the adjacent wall zones of the fragmentation shell.

Abstract: The present invention provides a grenade with dynamic arming having a body and a fuse, in which arming of the fuse is made dependent on the dynamic unwinding of a ribbon which surrounds the fuse and which is weighted with an inertia block at the end of winding, wherein said inertia weight is held in position, before the grenade is thrown, by a long safety piece, called spoon, said weight is not secured to the spoon and, at the very beginning of the trajectory of the grenade, the inertia causes both ejection of the spoon and displacement of the inertia weight, this displacement causing dynamic unwinding of the ribbon and arming of the fuse.

Abstract: A safetied demolition charge fuze of the kind that upon actuation switches rom a safe to an armed state. Double safety means are provided to ensure the subsistence of a predetermined delay time. A detonator ignitable via a pyrotechnic delay charge is located within a safe-and-arm slide. In the safe state, the detonator is out of alignment with the pyrotechnic charge due to the safe position of the safe-and-arm slide. The latter is retained in the non-aligned, safe position by means of a retainer shaft which is locked in the retaining position by a heat sensitive defense mechanism. After a predetermined time delay, heat transferred from the burning pyrotechnic delay charge cause the latter to unlock and release the retainer shaft which thereupon and by yielding to its compression spring, clears the safe-and-arm slide. In consequence and by the action of springs associated with the slide the latter is urged to the armed position at which the detonator is aligned with the pyrotechnic delay charge.

Abstract: A fuse assembly embodying a detonator movable by centrifugal force into alignment with a firing pin held retracted by a drogue and drag line and movable forwardly into engagement with the detonator by impact, the fuse assembly being attached to a grenade which, in turn, is attached to a projectile, for firing the grenade upon impact of the projectile with a target.

Abstract: A pyrotechnic or explosive device comprises a pyrotechnic or explosive charge and an electrical firing circuit therefor. The firing circuit includes a source of electrical energy, an electrical firing element to ignite the charge, and an electric switch connected between the energy source and the firing element. The switch includes biasing means and manually engageable means for holding the switch open against the biasing means. Delay means, either pyrotechnic or electrical, are preferably included.

Abstract: A different, or additional safety mechanism is provided for hand grenades and other munitions. Illustratively, a latch, pivotally mounted on the safety handle or explosive filling plug of a conventional fragmentation grenade immobilizes the otherwise free end of the grenade's safety handle. In this way, the ring and safety pin combination can be eliminated because the latch now provides an alternate safety. The latch also prevents the dangerous field abuse of carrying grenades from accouterment or uniforms by means of the safety handles or the safety pin rings.

Abstract: A typical embodiment of the invention has a gasket pressed between the flange on a hand grenade fuze and the bore in the grenade's firing mechanism body that exposes the percussion cap to the striker in order to make the fuze waterproof and dirtproof. A threaded ferrule bears against the flange to press the gasket into this engagement. A portion of the ferrule extends over a length of the fuze housing to provide a heat shield that establishes the burning time of the fuze. In this way, striker impact is enhanced through a rigid, although readily removable fuze mounting; attenuated fuze effects caused by fully waterproofed fuze lengths are avoided; and fuze assembly is completed after the striker is "cocked" and secured by the safety handle and associated cotter pin.

Abstract: The fuel air explosive (FAE) device of this invention is equipped with a vity responsive unitary burster-detonator positioned in the liquid fuel, wherein the burster is heavier than the liquid fuel and the cloud detonator is lighter than the liquid fuel to provide for automatic means to orient the burster at the bottom of the fuel container and to simultaneously orient the cloud detonator at the top of the fuel container with hand operated release means on the exterior of the device to activate the burster and cloud detonator.

Abstract: A firing pin/safety ring for a portable explosive device characterized by the firing pin being positionable in a wide range of angular positions with respect to the plane of the safety ring.

Abstract: The invention relates to a projectile having a head extended by a tubular tail and containing an explosive charge as well as a firing chain for the latter. The tail is made of two telescopic tubular parts, one of which is integral with the head and together with the head carries a first part of the firing chain, the other carrying the remaining part of the firing chain, and guiding means that are distributed over the two parts in order to assign them a determined angular position depending on their relative axial position.

Abstract: A smoke shell for providing successive ignition of slow burning and fast burning smoke emitting charges. A steel shell containing a slow burning charge is ejected in a delayed time period after an inner casing with its upper fast burning charge has been ejected.

Abstract: A delay charge is filled into a tubular delay charge carrier closed on one end, and the filling height is measured subsequently. Only when the sufficient filling height of the delay charge has been reached, the bottom part of said tubular delay charge carrier is provided with an aperture so that only then the detonating charge of the hand grenade fuze can be ignited.

Abstract: An improved hand grenade incorporating safety features including a normally uncocked striker arm and a protective shield over the primer. Because the striker spring is normally unstressed, the major working parts of the grenade may be inexpensively made from plastics.

Abstract: A hand grenade whose interior is divided into two chambers receiving the explosive charge, said chambers being superjacently arranged and open in respect of each other, whereby the detonation wave originating from the detonator in the lower of said two chambers is influenced.

Abstract: A smoke cup projectile charge comprising smoke cups stacked one above the other in the shell jacket in discharging direction, the smoke cup supporting components having identical strength and being filled with smoke charge composition comprising hexachloroethane, zinc oxide and metal powder, and a fuse system of priming cartridges embedded in transmission composition in the smoke charge and ignited by capillary delay tubes.

Abstract: The present invention relates to a generally spherical hand grenade, wher the fuze projects a lesser distance from the grenade body than prior art fuzes, this lower profile providing better aerodynamic and handling characteristics. The novel fuze includes two overlapping levers, the outermost one being a safety lever, which must rotate through a 90.degree. arc from the fuze body before the fuze can be actuated to detonate the grenade.

Abstract: An electrically detonated fuse for a grenade is shown, used either as a b up system for the usual mechanical detonator, or independently as the sole arming and detonating means. The invention is considered more accurate and dependable than a mechanical system, which is aimed at the objective of reducing the amount of grenade duds, the dangerous phenomenon of still live grenades unexploded upon impact creating a hazardous situation for military and other personnel. The invention uses the ordinary twisting action of the currently used inflated ribbon which is extended from the grenade while it is in flight, to generate an electromotive force signal. An electrically activated detonator is installed next to the grenade's main charge, for blowing the device when the electrical detonator is switched on. A large surge of power is fed to the electrical detonator by the closing of an electrical impact fuse, when the grenade physically impacts a target.

Abstract: This fuze is a subassembly of a spherical smoke grenade. The grenade compes a rubber case with the main charge therein. The fuze comprises a metal body one surface of which is sperhical and forms part of the spherical exterior of the grenade. The fuze comprises an arm/safe mechanism which includes pins, pull rings, a handle and a hermetically sealed delay ignition system which comprises a primer, two ignition mixes and a delay mix. The firing pin is mounted in a radial hole in the fuze body with an arm/safe pin mounted in another hole which is 90.degree. away from the firing pin hole. The arm/safe pin engages a slot in the firing pin to hold it in the safe or retracted position. The arm/safe mechanism is designed so that none of the parts thereof, except for the handle, can fly out as the grenade is thrown.

Abstract: An electrically detonated fuse for a grenade is shown, used either as a b up system for the usual mechanical detonator, or independently as the sole arming and detonating means. The invention is considered more accurate and dependable than a mechanical system, which is aimed at the objective of reducing the amount of grenade duds, the dangerous phenomenon of still live grenades unexploded upon impact creating a hazardous situation for military and other personnel. The invention uses the ordinary action of the currently used inflated ribbon which is extended from the grenade while it is in flight, to generate an electromotive force signal via a piezoelectric crystal. An electrically activated detonator is installed next to the grenade's main charge, for blowing the device when the electrical detonator is switched on. A large surge of power is fed to the electrical detonator by the closing of an electrical impact fuse, when the grenade physically impacts a target.