Abstract: A firearm ammunition cartridge including a case having a substantially tubular body portion, an open leading end, and a trailing end defining a primer port, the primer port opening to an interior of the case, a projectile received and retained within the leading end of the case, and configured with a recess extending inwardly from a trailing end of the projectile to receive a quantity of gunpowder, and a quantity of compressed gunpowder provided in the recess of the projectile such that the compressed gunpowder remains in the recess at any orientation of the projectile.

Abstract: The present invention provides a metal injection molded ammunition cartridge comprising a metal injection molded bottom portion comprising a primer recess in communication with a primer flash hole that extends into a propellant chamber and a metal injection molded body extending form the metal injection molded bottom portion.

Abstract: A firearm ammunition cartridge comprises a case having a substantially tubular body portion, an open leading end, and a trailing end defining a primer port. An insert is received within the case and extending along the body portion. The insert has an exterior surface conforming to an interior surface of the body portion and a central cavity extending along an axial dimension of the insert. The central cavity opens to the primer port at the trailing end of the case and to a leading end of the insert. A quantity of gunpowder is disposed within the central cavity, and a projectile is received and retained within the leading end of the case. The gunpowder is confined to a chamber comprising at least a portion of the central cavity between said case trailing end and the projectile.

Abstract: A high strength polymer-based cartridge casing includes a cartridge body, molded from a polymer, having a first end and an opposing second end, and enclosing a volume. A bullet is removably engaged with the first end and an insert is engaged to the second end. A shoulder portion is located proximate the first end and a propellant chamber formed in the volume. The propellant chamber has a first diameter proximate to the shoulder, a second diameter proximate to the insert and greater than the first diameter, and a linear slope disposed between the first diameter and the second diameter.

Abstract: A device adapted for a down-hole seismic source in a down-hole in the subsoil and containing water, the device being adapted for introduction into the down-hole and immersion in water, includes: a cartridge-holding head, having a cavity having a number of firing mouths on the side surface of the head, inclined relative to the longitudinal axis of the head towards the operationally lower end of the closed head, the cavity accommodating a cartridge inserted into the upper end of the head; a cartridge percussion system into a sealed body and adapted to cause the explosion of the cartridge, and connected in a top position of the head, the explosion of the cartridge, of the blank-loaded type, causing water to be expelled laterally through the firing mouths when the device is operationally immersed in water within the down-hole.

Abstract: A non-lethal projectile having a shear-thinning fluid within an interior cavity. The shear-thinning fluid having a greater apparent viscosity at low shear rates to spin-stabilize the non-lethal projectile during flight and a lower apparent viscosity at a high shear rate corresponding with the shear-thinning fluid shearing against the frangible cap upon the non-lethal projectile striking the target, with the low viscosity of the shear-thinning fluid allowing proper dispersal upon impact with the target. The shear-thinning fluid can comprise a marking media and be in the form of an emulsion with less than about 50% liquid by volume to effectively disperse upon impact with the target.

Abstract: A firearm ammunition cartridge comprises a case having a substantially tubular body portion, an open leading end, and a trailing end defining a primer port. An insert is received within the case and extending along the body portion. The insert has an exterior surface conforming to an interior surface of the body portion and a central cavity extending along an axial dimension of the insert. The central cavity opens to the primer port at the trailing end of the case and to a leading end of the insert. A quantity of gunpowder is disposed within the central cavity, and a projectile is received and retained within the leading end of the case. The gunpowder is confined to a chamber comprising at least a portion of the central cavity between said case trailing end and the projectile.

Abstract: A replaceable bullet cartridge appropriate for use in the gun that includes a primer and a spherical BB positioned approximately ¼ th of an inch away from the primer. The BB is secured in position with a piece of paper wadding set within the replaceable bullet cartridge. The BB and paper wadding are emitted from a second of the replaceable bullet casing when the gun is fired and the primer is struck. There is no gun powder or propellant used in combination with the primer when using the replaceable bullet cartridge. The resulting speeds of the BB are in the range of 700 to 800 feet per second.

Abstract: A replaceable bullet cartridge that includes a primer and a cylindrical BB pellet positioned approximately ¼ th of an inch away from the primer. The BB pellet is secured in position with a piece of paper wadding set within the replaceable bullet cartridge which is fired from the replaceable bullet cartridge with the BB pellet when the primer is struck. There is no gun powder or propellant used in combination with the primer when using the replaceable bullet cartridge. The BB pellet and the piece of paper wadding are fired from the second end of the casing without a selected one of gun powder and expander propellant when the loaded primer is struck by a hammer. The resulting speeds of the BB pellet are in the range of 700 to 800 feet per second.

Abstract: A two piece, two-stage, reduced-energy mechanically operating cartridge is provided for launching, a configured bullet choice of various compositions from a dedicated or modified firearm. The cartridge unit is comprised of a primary case having a cavity to receive a propellant unit or propellant connection and a piston sleeve having a cavity to receive the configured bullet choice, the primary case coupled to the piston sleeve. The cartridge having a retracted pre-firing state and an expanded fired state whereby the piston sleeve and primary case telescope apart forcing, the firearm's slide or bolt to the rear, a mechanical operation opposed to a conventional cartridge with gas blow back operations.

Abstract: A reloadable training munition having a reusable shell base having a propulsion system reload inserted into a hollow cavity of the shell base and a reusable single piece projectile inserted into the shell base, the projectile having a hollow body portion, a driving band adjacent the body portion, and a nose portion adjacent the driving band having void spaces for controlling both density and mass properties of the nose portion.

Abstract: A reloadable munition having a reusable shell base having a hollow cavity on a bottom face to accept a propulsion system reload and a reusable projectile inserted into a top portion of the shell base, and a mechanical retainer for the propulsion system reload in the shell base to provide reloading and reusing of the munition by hand.

Abstract: A method and apparatus for expelling a projection from an air gun by striking a primer cap filled with a shock-sensitive explosive compound, causing the cap to explode, which in turn rapidly compresses a volume of air located between the projectile and the cap, causing the projectile to exit from the barrel of the air gun at a high rate of speed.

Abstract: A two piece, two-stage, rechargeable, reusable, reduced-energy mechanically operating cartridge is provided for launching a bullet of various compositions from a dedicated or modified firearm. The cartridge unit is comprised of a primary case, a piston sleeve, a propellant unit, and a bullet choice of a solid light weight material for inanimate-target applications or a “marking” version for non-lethal live-target training applications. Cartridge includes a piston sleeve and a primary case coupled together via a channel and cog locking/traveling/unlocking system. The primary case includes a substantially non-deformable jacket defining a cavity to receive a propellant unit or propellant connection and provides the channels to receive piston sleeves cogs for a locking/traveling/unlocking feature. The piston sleeve includes a substantially non-deformable jacket defining a cavity to receive configured bullet.

Abstract: Non-lethal ammunition for a riot gun assembles a bi-chambered projectile body and an impact nose, the assembly being spin-stabilized and nose-heavy such that the nose will impact first at the target. The rearward end of the assembly is mounted into the forward end of a shell casing having a high-energy gas expansion chamber, the mounting forming a low-pressure chamber at the rearward end of the projectile. A cup-shaped multi-port gas diffuser plug, spaced from the projectile body, directs burnt propellant gases from the expansion chamber into the low-pressure chamber to expel the projectile at a relatively low velocity. A sleeve interiorly of the gas diffuser plug closes the ports and is degraded by the burnt gases to provide a complete burning of the propellant.

Abstract: Methods and apparatus according to various aspects of the present invention comprise a propelling system for propelling projectiles with variable velocity. In one embodiment, a cartridge comprises a cartridge case, the propelling system, and the projectile attached to the cartridge case.

Abstract: A simulation munition of a bean bag crowd control round is provided. The simulation munition includes a cartridge with first and second bores disposed therein; a muzzle loading primer insertable into the second bore at the second opening to the cartridge wherein any explosive force created by the primer will be directed toward the first opening; a shotgun wad insertable into the first bore through the first opening until the wad positions adjacent the second bore; and a reball insertable into the shotgun wad. When the munition is assembled, the shotgun wad is located adjacent the second bore, the reball is located in the shotgun wad and the muzzle loading primer is located in the second bore of the cartridge. The munition is configured to fire the reball from an explosive force caused by the muzzle loading primer that moves the reball with a less than lethal force.

Abstract: A method of manufacturing a cartridge comprising providing a cartridge body with forward and rearward cavities interconnected by an aperture, providing a piston with a primer retaining cavity, inserting primer into the primer retaining cavity, securing the primer, placing a seal member around the piston, inserting the piston and seal member combination into the rearward cavity of the cartridge body, and crimping at least a portion of the cartridge body to the piston.

Abstract: A blank cartridge (1) comprises a cartridge casing (2) with a first primer (18); a piston (9) with a head (10) and an arm (11); and an expansion chamber located between said primer (18) and the head of the piston (10), wherein, following detonation of the primer, the piston slidably displaces substantially within the casing (2) of said cartridge (1).

Abstract: A two piece, two-stage, rechargeable, reusable, reduced-energy mechanically operating cartridge is provided for launching a bullet of various compositions from a dedicated or modified firearm. The cartridge unit is comprised of a primary case, a piston sleeve, a propellant unit, and a bullet choice of a solid light weight material for inanimate-target applications or a “marking” version for non-lethal live-target training applications. Cartridge includes a piston sleeve and a primary case coupled together via a channel and cog locking/traveling/unlocking system. The primary case includes a substantially non-deformable jacket defining a cavity to receive a propellant unit or propellant connection and provides the channels to receive piston sleeves cogs for a locking/traveling/unlocking feature. The piston sleeve includes a substantially non-deformable jacket defining a cavity to receive configured bullet.

Abstract: The present invention (2) is a small arms caliber and/or power reducing device for using a primer (18) to fire a projectile (21) and thence directionally guide the trajectory of said projectile from a firearm (1) the barrel bore of which may be substantially larger than the caliber of said projectile. The present invention may be adapted by selecting appropriate external dimensions, internal dimensions and form factors to enable its use with any existing breech loading small arm chambered for center-fire cartridge ammunition. The present invention may be constructed of two parts: 1) An adapter sleeve (10), and 2) a chamber (14), and intended to be re-loadable for multiple uses. Alternatively, the present invention may be configured as a single piece, fabricated with a primer and a projectile disposed therein, and intended to be used one time and discarded. Suitable primers may include Standard Small Rifle or Small Pistol Primers, Standard Large Rifle or Large Pistol Primers, or Standard 209A Shotgun Primers.

Abstract: A method and apparatus for expelling a projection from an air gun by striking a primer cap filled with a shock-sensitive explosive compound, causing the cap to explode, which in turn rapidly compresses a volume of air located between the projectile and the cap, causing the projectile to exit from the barrel of the air gun at a high rate of speed.

Abstract: A two piece, two-stage, rechargeable, reusable, reduced-energy mechanically operating cartridge is provided for launching a bullet of various compositions from a dedicated or modified firearm. The cartridge unit is comprised of a primary case, a piston sleeve, a propellant unit, and a bullet choice of a solid light weight material for inanimate-target applications or a “marking” version for non-lethal live-target training applications. Cartridge includes a piston sleeve and a primary case coupled together via a channel and cog locking/traveling/unlocking system. The primary case includes a substantially non-deformable jacket defining a cavity to receive a propellant unit or propellant connection and provides the channels to receive piston sleeves cogs for a locking/traveling/unlocking feature. The piston sleeve includes a substantially non-deformable jacket defining a cavity to receive configured bullet.

Abstract: A non-lethal ammunition utilizes dense powder ballast and a two-stage firing sequence for launching non-lethal projectiles of a caliber range from approximately 5.56 mm through approximately 40 mm. The non-lethal ammunition comprises a non-lethal cartridge. The non-lethal cartridge comprises a dense powder ballast and one or more non-lethal projectiles. The dense powder ballast is more massive than the non-lethal projectile providing sufficient payload mass to operate the weapon mechanism while launching the non-lethal projectile at velocities compatible with non-lethal applications. A two-stage ignition system fires the non-lethal ammunition and subsequently fires the more massive dense powder ballast. The firing events are separated by a time delay of less than a second. The non-lethal ammunition provides non-lethal projectile capability for semi-automatic and automatic weapons.

Abstract: A low-impulse, non-lethal telescoping cartridge for deployment of non-lethal ordnance. The cartridge includes a payload cup containing at least one non-lethal projectile. The payload cup is telescopically mounted upon a cartridge case base. When fired, the payload cup telescopes out from the base and releases the non-lethal projectiles at a non-lethal velocity. The telescoping feature of the cartridge allows the cartridge to be fired from an automatic weapon, such as a 40 mm MK19 grenade machine gun.

Abstract: A specialty bullet is disclosed that is adapted to transmit a tranquilizing fluid upon impact with a target for purposes of immobilizing the intended target without causing great harm to the target or the surrounding area. The specialty bullet is sized and shaped like that of a conventional bullet so that it can be fired from a conventional firearm; however, the concept could work with innumerable types of ammunition. The disclosed invention includes a so-called “Collapsule” bullet, which is a molded, hollow cavity fabricated of a high-strength malleable plastic polymer that is filled with a tranquilizing fluid. The bullet is fitted with a so-called “Injectile,” which is a hypodermic injection spike (to transmit the tranquilizing fluid) that is backed and driven by an inertia base mass (i.e., lead core or other suitable) located at the base of the bullet.

Abstract: Subsonic and reduced velocity rifle ammunition cartridges are disclosed. The ammunition cartridges can be fired through a standard rifle with a common twist rate at subsonic and reduced velocities. The subsonic ammunition uses propellant that is not typically used with the selected rifle cartridge. Cycling subsonic ammunition cycles the firing and loading mechanisms of fully automatic and semiautomatic weapons. Cycling subsonic ammunition cartridges contain slow burning propellant, such as cannon powder, and a heavy projectile with a long bearing surface. Non-cycling subsonic ammunition uses moderately fast burning pistol propellant. The projectiles are carefully selected to be stable at subsonic or reduced velocities and at the standard rifle twist rate for given cartridge caliber.

Abstract: The invention provides a blank pyrotechnic cartridge comprising a cartridge casing having a bullet-like projection extending forwardly therefrom, the bullet-like projection being retractable through an opening in the casing when the cartridge is fired, the cartridge being axially expandable in a rearwards direction in use to move the breechblock of a firearm to recycle the firearm. Also provided is a method of feeding blank ammunition into the barrel of a gun comprising the step of loading the gun with a blank cartridge, the blank cartridge comprising a cartridge casing having a bullet-like projection extending forwardly therefrom, the bullet-like projection being retractable through an opening in the casing when the cartridge is fired, the cartridge being axially expandable in a rearwards direction in use to move a breechblock of the gun to recycle the gun.

Abstract: A sub-caliber projectile cartridge for automatic weapons includes a case, a piston, a forward cavity/an inner bore in the piston, a sub-caliber projectile, and a link. The sub-caliber projectile is seated into the forward cavity/inner bore located in the forward portion of the piston. Gas passages permit propellant gases to bleed into the cavity behind the sub-caliber projectile and to accelerate the sub-caliber projectile upon firing. The case and piston are assembled and telescopically secured by means of a crimp or another similar feature, to allow relative movement therebetween during chambering and firing. The link may be allowed to move for some portion of the required relative travel between the link and the base of the case. A shoulder on the piston provides a stop through which reaction loads are transmitted to the rear of the barrel during chambering and firing.

Abstract: This low impulse payload cartridge for automatic weapons includes a case, a piston, an ogive, a payload cup, a payload, and a link. The payload cup and payload is seated into the forward portion of the piston. Gas passages permit propellant gases to bleed into the cavity behind the payload and to accelerate the payload upon firing. An alternative to using bleed gases is to use a separate propelling charge behind the payload. The case and piston are assembled and telescopically secured by means of a crimp or other similar feature, to allow relative movement therebetween during chambering and firing. The link may be allowed to move for some portion of the required relative travel between the link and the base of the case. A shoulder on the piston provides a stop through which reaction loads are transmitted to the rear of the barrel during chambering and firing. The piston telescopes over the case during chambering to provide the relative movement between the link and the case base required for weapon function.

Abstract: A modular crowd control munition 10 fires a large number of non-lethal soft pellets into a crowd 100 using an explosive charge. The munition 10 contains a pellet matrix 22 that houses the soft pellets 40, and uses a low energy explosive sheet material 50 at the back of the munition 10 to disperse the soft pellets 40. The munition 10 is used for close-in, “last resort”, crowd control to replace the necessity of using deadly force.

Abstract: Reduced propellant ammunition cartridges, particularly subsonic cartridges for clandestine use of weapons which normally fire supersonic projectiles, include a length of pliable tubing that has an outside diameter just slightly smaller than the inside diameter of the cartridge neck portion that holds the projectile with such tubing having a length that allows it to snugly fit between the base of the cartridge case and the cartridge neck portion. Such a sized tube is inserted through the neck portion and then its distal end is expanded below the cartridge neck portion to be held captive in the cartridge case. The propellant charge is contained inside the pliable tube by the rear end portion of the casing at its distal end and the projectile at its proximal end.

Abstract: A low impulse telescoping cartridge includes a case, a piston, a projectile, and a link. The projectile is seated into the forward portion of the piston. Gas passages permit propellant gases to bleed into the cavity behind the projectile and to accelerate the projectile upon firing. An alternative to using bleed gases is to use a separate propelling charge behind the projectile. The case and piston are assembled and telescopically secured by means of a crimp or other similar feature, to allow relative movement therebetween during chambering and firing. The link may be allowed to move for some portion of the required relative travel between the link and the base of the case. A shoulder on the piston provide a stop through which reaction loads are transmitted to the rear of the barrel during chambering and firing. The piston telescopes over the case during chambering to provide the relative movement between the link and the case base required for weapon function.

Abstract: A high-low pressure ammunition cartridge includes a case containing a gas expansion chamber and a missile chamber separated from each other by a pressure containment wall containing one or more pressure control ports providing fluid communication between the gas expansion chamber and the missile chamber. The gas expansion chamber is located between the pressure containment wall and a base plate pressed into the back end of the case. The pressure containment wall may either be integral with the case or a separate piece which is removable from the case along with the base plate to facilitate reloading of the cartridge thereby reducing the cost of using the cartridge. The thickness of the base plate may be varied for varying the volume of the gas expansion chamber. Also, the thickness of the gas containment wall and number and size of holes in the gas containment wall may be varied for varying the velocity of the gas entering the missile chamber from the gas expansion chamber.

Abstract: An ammunition cartridge having a reduced propellant charge and an initial duced cartridge volume is provided. The cartridge volume is reduced by partially filling the cartridge case with a foam filler using a male mold form. The male mold form is sized to provide the desired propellant volume and tapered to maintain the desired cartridge pressure during the propellant burn. Alternately, the foam filler may be formed externally and inserted into the cartridge case. In that embodiment, an adhesive retainer is used to secure the foam filler to the base of the case. During firing, the foam filler is turned into a gas, thereby providing the large volume of the case for expansion of the propellant gases. After firing, the case is free of residue, all of the foam filler having been expelled as a gas.

Abstract: Ammunition comprising a cylindrical case (1) with one of the closed ends having coaxially a concentric chamber (1a) capable of receiving a propulsive means for a projectile lodged in the case. The propulsive means consists of a blank cartridge (2) lodged in a diffusing means (3), the cartridge and diffusing means assembly being inserted into the coaxial chamber of the case.

Abstract: A firearm safety cartridge lodges a projectile in the breech end of the barrel of the firearm to prevent live ammunition from being inserted into the firing chamber of the firearm.

Abstract: The device for firing a diabolo form bullet from a firearm with a rifled barrel consists of a cartridge having a housing, a detonation cap connected to one end of the housing in a gas-tight manner and containing a gas-forming propellant, the housing having an expansion compartment for expansion of a gas produced on ignition of the gas-forming propellant and an outer surface tapered toward another end of the housing remote from the detonation cap, the tapered outer surface aligning the diabolo form bullet loaded coaxially in the rifled barrel by engaging a tapered recess provided in the diabolo form bullet, whereby the diabolo form bullet is forced into the rifled barrel so as to calibrate the diabolo form bullet; and a membrane covering the other end of the housing remote from the detonation cap. The housing is provided with at least one breakthrough region, which ruptures when a gas pressure on ignition exceeds a predetermined maximum value.

Abstract: A reusable "training" or "practice" round has a reusable hollow casing and a reusable hollow projectile that "snap together" and are releasably retained in assembled relationship by utilizing a resilient connecting member such as a groove-carried O-ring that is interposed between juxtaposed surfaces of concentrically interfitting portions of the casing and the projectile. The assembled practice round is inserted into the chamber end region of the barrel of a firearm and, when the round is fired, the casing is retained in the chamber as the projectile is caused to move along the barrel of the firearm and to discharge along a trajectory that closely simulates the path of flight of a "live" round. Propellant is provided by a reloadable or disposable blank-type cartridge.

Abstract: Ammunition cartridge for simulated firing using a laser beam, this comprising a casing which is bored longitudinally and provided with, at the inlet of the bore, a percussion cap, the outlet of the bore fitting the orifice of the firearm barrel, its external form including additional forms of a casing and a conventional bullet.

Abstract: A nonlethal frangible projectile for delivering fluids and the like to a target is composed of a soft cap portion, and a stronger base portion which plugs the rearward end of the cap. Scoring and a thinned nose region facilitates rupture upon impact.

Abstract: An improved training cartridge has a plastic case skeletonized at its leading portion and defining a powder chamber at its trailing portion closed by an integral forward wall. The location of the wall is preselected to tailor the internal volume of the powder chamber to substantially equal that of the quantity of propellant charge employed by the cartridge so as to retain the charge in a fixed position in the chamber adjacent the primer. The configuration can either include a plastic bullet for training with projectiles having limited (reduced) range, or be made without a bullet, for those training exercises requiring blanks.

Abstract: The ammunition features a chamber (1b) having substantially along its full length a constant and uniform internal diameter corresponding to the diameter of a cartridge (2), in order to avoid building up high pressure, the said cartridge (2) being filled with pyroxylin powder and fitted with a primer (3) overcharged with a fulminating compound.

Abstract: A practice round [10] for use in firearms including a casing [11] holding a projectile [16]. A standard primer cap [20] is detonated to propel the projectile forward. A vent hole [40] in the casing limits the pressure buildup in the casing cavity [17].

Abstract: A small arms caliber reducing adaptor kit including a barrel liner and cartridge insert sized to be inserted into an original small arms barrel and an original cartridge chamber respectively, the barrel liner and cartridge insert having corresponding reduced bores with the bore of the cartridge insert having a nose opening for a pellet and a base opening for a primer - the kit further including a primer seating tool.

Abstract: An adaptation cartridge comprises a firing pin casing which is screwed into a cartridge chamber or cartridge chamber tube and is secured against rotation by a radially displaceable slide. The cartridge is used for training on a gun having a subcaliber barrel adapter.

Abstract: An adaptor cartridge permitting the use of rim-fire ammunition in a center-fire weapon. The adaptor comprises a tubular casing with an inner passageway located at an acute angle to the tubular casing at the lower end where the firing pin strikes. The opening of the cylindrically-shaped passage at the lower end crosses the center point of the lower end of the tubular casing so that the centrally-located firing pin of the weapon will strike the rim of an insert blank cartridge which is rim-fired and which has been placed in the adaptor cartridge.

Abstract: A small arms firing effects simulator utilizes a modular construction to egrate with the magazine of a weapon such as a rifle. The modular design resembles the ammunition clip and houses an expendable plastic coated plurality of pyrotechnic charges. An electrical control circuit is also housed within the module and serves to interface the pyrotechnic charges with the firing of the weapon, including semi-automatic and automatic firing as well as disabling the weapon when all rounds have been fired.

Abstract: A round of ammunition in which a primer cap provides the sole means for propelling a lightweight missle from a cartridge casing shaped to fit into an existing firearms firing chamber. A removable insert in the cartridge casing 12 provides an elongate passage which moderates the force of the primer cap explosion to avoid damaging the missile. The casing is reloadable from the base to allow a fresh missile to be inserted, and in an alternative embodiment a two part insert is provided which likewise allows a missile to be inserted from the base end. In all embodiments the missile is preferable in the form of an air gun pellet, and the ammunition is preferably used with a liner assembly adapted to minimize damage to the missile.