Abstract: A machine gun is provided, which has a detachable barrel. The barrel has a plurality of axially extending outer barrel ridges integral with and projecting from the top of the barrel near its rear end. The body of the machine gun has a barrel catch which is integral with a barrel holding socket and has a chamber adapted to accommodate the barrel ridges reciprocal between locking and unlocking positions. A locking pin is provided, which has a plurality of downward projecting, axially extending body ridges which, together with a stop member, snugly accommodate the barrel ridges when the pin is in the locked position, but intermesh with the barrel ridges in the unlocked position of the pin.

Abstract: A device is set forth for the extraction and acceleration of ions in a high flux sealed neutron tube containing a low-pressure gaseous deuterium-tritium mixture, where an ion source (12) supplies several ion beams (3a, 3b, . . . 3e) which are projected onto a target electrode (4) by means of an extraction and acceleration system in order to produce therein a fusion reaction which causes an emission of neutrons.

Abstract: A rigid mounting apparatus for attaaching an auxiliary sighting aid to a pistol. In one embodiment, two major shapes are utilized, one of which has a transverse cross-section that is generally U-shaped; the second shape forms an L-shaped bracket that fits below the barrel of a pistol and lies ahead of the trigger guard. In another embodiment, three elements are designed to fit in such a way that, in combination, they establish a U-shaped body for mounting a sighting aid above the barrel. Two side plates of this embodiment are configured so that they can be extruded from a common die; one of them is rotated so that the two plates form mirror images of each other when they are attached to a pistol. A bracket cooperates with some structural element on the pistol (such as the slide latch pin) to securely hold the mounting apparatus in place when the pistol is fired, so that recoil forces from firing will not cause the mounting apparatus to shift with respect to the pistol.

Abstract: A sabot is provided which is composed of a plurality of sabot segments which engage and form a shell surrounding a bullet of improved configuration. The inner surface of each sabot segment matches and is complimentary to the adjacent outer surface portions of the bullet body. The bullet body has a pair of axially aligned conical parts adjacent to and spaced apart from each other, each conical part increasing in diameter as the conical part extends away from the other conical part. Between the conical parts, the bullet has an extended central portion serving to separate and interconnect the conical parts.

Abstract: A mounting assembly for mounting an item such as a target sensor onto a weapon. The mounting assembly involves a fixing member for fixing the support member to a weapon. A first pivot joint couples the item to the support member to permit turning movement of the item relative to the support member. A second pivot joint couples a lever to the support member to permit turning movement of the lever relative to the support member. A third pivot joint the couples the item to the lever so that turning movement of the lever can be accompanied by turning movement of the item.

Abstract: This invention relates to a variable velocity riot gun designed to give the individual using it control over the velocity of the projectile such that he can effect a sub-lethal attack of projectile impact upon his opponent at will on a shot by shot basis at a variety of target distances and hardness. This is achieved by a gun design including two barrels; a main barrel and a vent barrel. The vent barrel slides forward and back to open and close vents in the main barrel. For minimum projectile velocity the vent barrel is disposed fully to the rear with all vents open. When the vent barrel is disposed forward, all vents are closed to produce maximum projectile velocity.

Abstract: Ammunition for a riot gun with a projectile of universal application. The projectile has a fluted end, with an internal cavity, which permits varied sleeves with a fluted throughbore to be used with varied nose inserts to define the type of ammunition desired, for example, a non-shattering flat nose shatterable ceramic cover tear gas nose, or the like. The projectile, sleeve and nose are insertable into a shell casing with a projectile propellant.

Abstract: In 1974, a well-known research problem in Statistical Mechanics entitled "To determine and define the probability function P.sub.2 of a particle hitting a predesignated area, given all its parameters of generation and ejection." was openly solicited for its solution from research and development organizations in U.S.A. One of many proposed solutions of the problem, initiated at that time, is by means of the TRAJECTORY SOLID ANGLE(TSA). TSA is defined as the integral of the dot product of the unit tangent of the particle's trajectory to the vectorial area divided by the square of the position vector connecting between the point of ejection and that of the surface to be hit. The invention provides:(1) The precise and the unique solution of a previously unsolved P.sub.

Abstract: A safety lock is described for weapons in which the safety lock includes a rigid housing 20 enclosing a hammer spring 27 and plunger 28. The plunger 28 receives an end of a hammer pin 34 either supplied with the weapon, or the present lock 19. The hammer pin is received through an opening at the top end of the rigid housing 20 to engage and press axially against the plunger 28. The plunger 28 includes a plunger shaft 31 that extends along the spring axis through the spring to a rotatable cam 37 (62) which may be selectively moved by a lock assembly 47 to shift between a position in which a recess is aligned with the plunger, thereby allowing the plunger to move axially and permit operation of the weapon, or to position a lock surface 40 in alignment with the plunger, for abutting the plunger and successfully locking the plunger in position so the associated hammer pin and hammer may not be operated.

Abstract: A cartridge 1 for expelling fluids under pressure has a drive body 5 as a cartridge case base 4, which is a hollow cylinder and has a rear opening toward the fluid chamber 2. The front end face of the drive body 5 has a spherical constricted area 10 with cylindrical projection, which receives a closing member 6 in a force-locking manner.

Abstract: Apparatus and method for sterilizing and encapsulating contaminated waste particularly medical implement waste in which a volume of thermoplastic compound having a melting point temperature-calibrated at a value which corresponds substantially to the temperature at which all biological contamination is rendered sterile substantially on contact, and impregnating a space containing contaminated waste items with the liquid compound and thereafter cooling the mass to its solidified phase while containing it against protrusion of any waste item. Two stage treatment of the waste is effected by utilizing a second calibrated thermoplastic having a lower melting temperature in a common deformable waste container with the first thermoplastic.

Abstract: A sealed neutron tube is set forth which contains a low-pressure gaseous deuterium-tritium mixture wherefrom an ion source forms an ionized gas which is guided by a magnetic electron confinement field produced by magnets (8), which source emits the ion beams (3) which traversed an extraction-acceleration electrode (2) and which are projected onto a target (4) so as to produce therein a fusion reaction which causes an emission of electrons. In accordance with the invention, the ion source is of a multi-cell type formed by n Penning-type cells comprising a multi-hole anode (6) which is arranged inside the cathode cavity (7) in order to increase the ion current. The shape and/or the dimensions and/or the position of the multi-hole anode are adapted to the topology of the magnetic field.

Abstract: In order to improve the service life of prior art gun tubes and to improve the ballistics of a projectile fired through them, the present invention provides a gun tube with an optimized variable rifling which produces a rifling force curve (R(x)) along the gun tube (x) which has an essentially trapezoidal shape with a noticeably reduced rifling force maximum compared to the rifling force curves of conventional constant rifling.

Abstract: A gunstock which has a combination of elements including a contoured pistol handgrip portion, an adjustable face engaging means, and double longitudinal buttstock cast. The contoured pistol handgrip in combination with the adjustable face engaging means and longitudinal buttstock cast allow the user to most completely absorb the recoil of the rifle as well as allow uniform positioning of the rifle for sighting.

Abstract: An improved pivotal bipod adapter. The adapter allows pivoting of the bipod by use of a rubber hinge type member. The rubber hinge member connects a base member with a bipod mounting portion and holds the bipod in a normal position but is pivotal from side to side to allow for resting the bipod on uneven surfaces.

Abstract: The invention relates to a composite material with lubricating properties consisting of a solid polymeric matrix such as polystyrene or polymethyl methacrylate containing between 20 and 85% by weight of a liquid oil with lubricating properties, such as a silicone oil.The material according to the invention is obtained by polymerization of an emulsion of the said oil in a monomer such as styrene or methyl methacrylate monomer in the presence of a surface-active agent which is a two- or three-block block copolymer in which one repeat unit is compatible with the said monomer.The materials according to the invention are used to form antierosive components for ammunition intended for barrel weapon systems and in particular wads (8) for shells (1).

Abstract: A safety plug for preventing firearms from being surreptitiously loaded while on display in stores. The plug utilizes an O-ring that serves to firmly hold the safety plug in place. The use of an O-ring eliminates the need for high precision plug dimensions, permitting inexpensive mass production manufacturing techniques. The O-ring fits within a groove that is substantially wider than the thickness of the O-ring which prevents O-ring shearing. Once inserted, the safety plug is entirely within the firing chamber and thus does not interfere with the operating action of the firearm. The plug can only be removed by a cleaning rod inserted through the muzzle to force the plug out of the firing chamber. The use of translucent materials enables the firearm barrel to be inspected and acts as a diffuser to eliminate "hot spots" that commonly result during bore light inspections.

Abstract: A modified slide catch is disclosed for standard semi-automatic pistols which can be operated by both right-handed and left-handed users.

Abstract: A forearm assembly for a pump action shotgun includes an axially elongated forearm and a pair of action bars. The forward end of each action bar is received and retained within an associated complementary recess in the rear end portion of the forearm. A piston grip comprises part of the forearm assembly and is releasably secured in fixed position to the forearm in a selected one of a plurality of angularly spaced apart mounting positions by a single fastener to accommodate either a right or left handed shooter.

Abstract: A impact-buffering recoil mechanism for firearms includes a buffer (3)(4) moveably mounted on a guiding member (1)(17) between a plurality of coil springs (2)(5). The mechanism is positioned in the firearm so that the moveable buffer travels from a position of repose to interpose between moveable parts (7) of the firearm (16) set into motion by the firing of the firearm and the frame of the firearm (8). This interposing will bring the moveable parts to an orderly halt while dissipating impact energy that would normally be transmitted to the frame and hence to the shooter.