Abstract: A liner for a shaped charge formed from a mixture of powdered tungsten and powdered metal binder. The liner is formed by compression of the mixture into a substantially conically shaped solid body. In a preferred embodiment of the invention, the mixture comprises a range of approximately 70 to 90 percent by weight of tungsten and 30 to 10 percent of the powdered metal binder. In a specific embodiment of the invention, graphite powder is intermixed with the powdered metal binder and tungsten to act as a lubricant. The powdered metal binder preferably comprises a malleable, ductile metal such as lead, bismuth, tin, zinc, silver, antimony, cobalt, nickel or uranium.

Abstract: This invention is in the field of perforating gun systems used, for example, to gain access to underground oil and gas formations. In particular, this invention relates to an expendable holder assembly for shaped charges of such systems.

Abstract: A well perforating apparatus for generating a plurality of material perforating jets. A base has a plurality of recesses or apertures, and a liner is proximate to the base and is indented into each recess or aperture. Explosive charges contact the indented surfaces of the liner to form multiple shaped charges. A detonator activates the explosive material to collapse the liner segments proximate to the explosive charges and to generate a plurality of perforating jets. In one embodiment of the invention, the base initially comprises a planar material that can be formed into a geometric shape for insertion into a cylindrical housing or wellbore. The invention substantially reduces manufacturing costs and is especially useful in permitting a high density shot pattern to be generated by the perforating jets.

Abstract: The process for manufacturing parts of revolution which are made from a high-density metal with great regularity of reproducibility, especially as regards the homogeneity of the matter.It consists in carrying out the following steps:forging in three dimensions by successive upsetting and drawing-out operations carried out in three perpendicular directions;closed-die forging; andrecrystallisation heat treatment.Application to the manufacture of hollow-charged coatings made of tantalum.

Abstract: In a shaped-charge device, the liner is so shaped that bulges are formed in the jet without causing the jet to deviate from the central axis. The shaped-charge device includes a case defining an axisymmetrical forwardly-opening cavity uniformly disposed about a central axis; an axisymmetrical, homogeneous-material, liner of variable thickness defining a forwardly-opening cavity having a closed apex, with the cavity being uniformly disposed within the casing about the central axis; and explosive material symmetrically disposed between the casing and the liner. The liner is so shaped that in response to the explosive material being detonated to thereby explode, the liner is progressively collapsed inward by the exploding material to be formed into a fluid jet of the homogeneous liner material that is forwardly expelled at a varying velocity from the casing along the central axis, with the forward portion of the jet being squeezed from the apex of the collapsing liner.

Abstract: A shaped charge includes a main body of explosive and a primer adapted to detonate said main body of explosive. In accordance with the present invention, the main body of explosive now includes an explosive composition known as sym-triaminotrinitrobenzene (TATB) and, since TATB is not sensitive enough to be a primer, the primer must consist of an explosive composition which is more sensitive than TATB. It has been discovered that, when the main body of explosive in a shaped charge is modified to include the explosive composition known as TATB and when the primer includes an explosive other than TATB, such as HNS or NONA or PYX or HMX, or a mixture of HNS or NONA or DODECA or PYX or HMX and TATB and when the shaped charge is detonated, the detonated charge will produce a jet that is longer in length than the jet associated with prior art shaped charges which did not have a main body of explosive that included TATB.

Abstract: A method is provided for dispersing and/or disrupting an aligned jet from a haped charge round. A fluted shaped charge liner, typically used to compensate for spin effects on a coherent jet in a spin stabilized round is applied to a non-spinning round to produce a dispersed and/or disrupted jet pattern. The effect of disruption may also be altered by altering the subcalibration ratio (ratio of liner diameter to charge diameter). For a given liner diameter, an increase in charge diameter may result in increased dispersion of the jet. In addition, other types of spin compensated liners such as those using so-called metallurgical spin compensation, may be applied to a non-spinning round to produce dispersion and/or disruption of the jet. Moreover, the rate of spinning of the round (or the direction of spin) may be altered such that the spin compensated liner produces a dispersed jet pattern.

Abstract: A liner for a shaped charge formed from a mixture of powdered tungsten and powdered metal binder. The liner is formed by compression of the mixture into a substantially conically shaped solid body. In a preferred embodiment of the invention, the mixture comprises approximately 80 percent by weight of tungsten and 20 percent of the powdered metal binder. In a specific embodiment of the invention, graphite powder is intermixed with the powdered metal binder and tungsten to act as a lubricant. The powdered metal binder preferably comprises a malleable, ductile metal such as lead, bismuth, tin, zinc, silver, antimony, cobalt, nickel or uranium.

Abstract: An improved shaped charge for generating a jet. A lens shaped waveshaper is positioned within the explosive material of a shaped charge to modify the shape of the divergent detonation wave into a planar wave or a converging wave. The waveshaper is formed with a low sound speed material having a high index of refraction. By reshaping the detonation wave, the acceleration of the shaped charge liner is increased, and the penetration depth and hole size of the jet can be increased. The shaped charge operates more efficiently, thereby requiring less explosive material than a conventional shaped charge.

Abstract: A projectile which includes multiple warheads separated one from another within a casing, each warhead having its own independent detonator. The warheads are arranged in spaced relationship along the longitudinal axis of the casing, and the detonators are linked with a fuzing mechanism located at the forward region of the casing. Upon reaching the target, the rearmost warhead in the projectile is detonated and the remaining warheads are then detonated sequentially forwardly, ad seriatim, by the fuzing mechanism.

Abstract: A breaching device comprising a regular polygon structure in which identi, rectangular, concave flying plate devices (shape charges) form the sides of the polygon, and a strong, rigid, lightweight structure holds the flying plate devices in position. The flying plate devices are identical and comprise a copper or copper alloy plate having a uniform thickness and a concave front face, a uniform elastomeric material layer attached to and covering the back convex surface of the metal plate, and a uniform layer of high energy plastic-bonded explosive covering the back of the layer of elastomeric material. The flying plate devices are oriented so that when simultaneously fired they fly in trajectories that are parallel to each other and perpendicular to the plane of the polygon.

Abstract: A dual operating mode warhead comprises a generally cylindrical explosive charge having a longitudinal axis and an outer peripheral surface extending between front and rear facing initiation surfaces. A front detonator initiates peripheral detonation of the explosive charge at the front facing initiation surface and creates a detonation wave travelling through the explosive charge toward the rear facing initiation surface. A rear detonator initiates detonation of the explosive charge at the rear facing initiation surface and creates a detonation wave travelling through the explosive charge and toward the forward facing initiation surface. Against heavy armor, only the rear initiation is used. A precision shaped charge proximate the front facing surface is responsive to the rear detonation wave to produce a high speed forward travelling jet with excellent armor piercing capability.

Abstract: A liner (30) for a shaped charge (10) has a hemispherical apex and a skirt portion (38) which terminates in a circular skirt edge (40) having a skirt edge diameter (D). The apex (36) has a radius of curvature which is less than the skirt edge diameter (D) and the thickness (Tac) of the liner at the center of the apex (36) is greater than the thickness (Ts) of the liner at the skirt edge (40), with the thickness tapering between the apex and the skirt edge in a smooth, curvilinear transition. The liner (30) may be employed in a shaped charge (10) which includes a shaped explosive (26) which has been compressed to at least 95% of its theoretical maximum density and is contained in a housing (12) and cover (20) made of a pulverable material such as a ceramic.

Abstract: The invention relates to warheads including a core-generating charge and rotating about an axis which is not the charge axis. In front of the coating of the charge is positioned a wedge with a straight or curved triangular cross section, for slowing down said coating in a non-isotropic manner. The wedge is further destroyed during the formation of the core.

Abstract: A pulverable casing (10) includes a housing (12) which is made from a ceramic material and which defines a circular housing closure surface (18). There is a cover (14) on the housing (12). The cover (14) is also made from a ceramic material and defines a circular cover closure surface (20). Cover (14) has a rounded conical exterior surface (24) that defines a skirt angle S of about 120.degree.. The cover closure surface (20) is dimensioned and configured to engage the housing closure surface (18) to define a housing-cover joint (22) which defines a joint angle .alpha. of about 130.degree.. In a particular embodiment, the exterior surface (24) of the cover (14) is rounded to a radius of about 1.8 inches and has a diameter D of about 3.28 inches.

Abstract: The invention relates to a pyrotechnical head of the type comprising an elongate envelope, a pyrotechnical composition contained in the envelope, and dispersal means for dispersing said pyrotechnical composition. The dispersal means include longitudinal detonating fuses adapted to split the envelope longitudinally, and a transverse detonating fuse adapted to split the envelope transversely.

Abstract: A binary, ternary and/or quaternary substantially lead-free tin alloy composition that may be used as outer sheath material in various explosive-pyrotechnic linear products, such as ignition cord, mild detonating cord (MDC) and linear shaped charge (LSC).

Abstract: The invention is a lid for a shaped charge which enables application of torque to the shaped charge for mounting in an expendable bar carrier borehole penetrating gun assembly. The lid comprises a plurality of flat surfaces facially parallel with the axis of a threaded stud forming part of the lid, the stud engaging mating threads in a hole in the carrier. The flat surfaces are arranged around the circumference of the lid so that a wrench or socket can be used to apply torque to the lid for mounting in the carrier. Each juncture of two contiguous ones of the flat surfaces includes a score line extending substantially perpendicular to the axis of the stud.In a preferred embodiment of the invention each juncture includes a crimp on part of the juncture on a side of the score line opposite to the stud, to retain the lid on the charge.The invention is also an apparatus for simultaneously torquing a plurality of shaped charged in a bar carrier. Each of the shaped charges comprises the charge lid of the invention.

Abstract: A shaped explosive charge 10 and a method of blasting a solid body 6 using the shaped explosive charge are provided. The explosive charge 10 comprises a first end 8 and a second end 9 and a mass of explosive material 14 towards the first end 8 thereof. It also comprises a housing 12 with a partition 32 and a peripheral skirt 18 which create a standoff space 20 between the mass of explosive material 14 and a surface of the solid body 6 exploded. In use, the explosive charge 10 is placed in a detonation position near, on or within the solid body 6 with the second end 9 thereof facing a surface of the body 6, and the mass of explosive material 14 is then detonated.

Abstract: A shaped charge includes a case, an explosive material packed against the inner wall of the case, and a liner for lining the explosive material, where the liner includes Bismuth and Copper powders as constituent elements. The Bismuth element replaces a Lead element which is normally present as a constituent element in prior art shaped charge liners. Bismuth is superior to Lead because all environmental concerns, with respect to the deposition of Lead in a formation, have been eliminated.

Abstract: A device for generating a shockwave for initiating detonation of a main explosive charge and a method for producing same are provided. A device according to the instant invention is capable of producing a more planar wave front than is possible according to the prior art. Also, the wave front generated by such a generator flattens out in less time than in the prior art, and therefore the weight and axial length of a warhead equipped with a generator according to the instant invention may be substantially reduced without a corresponding reduction of the detonator's explosive yield.

Abstract: A method is described for improving the mechanical stressability of ammunition bodies, particularly shaped charges, which are highly accelerated and/or subjected to shock waves by coating the contacting portion of the cavity. In a first step of the method, the charge liner is coated on its outer surface and the case is coated on its inner surface with a styrene-containing copolymer; in a further step of the method, the explosive charge is cast or compressed in a known manner. The method finds use particularly for the production of tandem shaped charge projectiles.

Abstract: An explosively forged elongated penetrator including a liner having a central section, an intermediate section and a peripheral section; the axial velocity of the sections being approximately equal; the axial thicknesses of the sections decreasing from the central to the peripheral section; the radial velocity increasing from the central to the peripheral section; and the line profile angle decreasing from the central to the peripheral section, to define an explosively driven, inwardly directed, centrally focused force for forging the penetrator from the liner substantially independently of the axial velocities.

Abstract: A shaped charge liner formed of a solid metallic material having a fine grain size of the order of 25 microns or less. The material can be, for example, copper, uranium, tantalum or an alloy showing superplasticity and having a density greater than about 5 gm/cm.sup.3. The liner can be made by subjecting the material to repeated cycles of cold working, annealing at just above the recrystallization temperature, and quenching.

Abstract: Rock and other hard materials, such as concrete, are broken by a controlled-fracturing process referred to as penetrating-cone fracture. The fracturing process is accomplished by pressurizing the bottom of a drill hole in such a way as to initiate and propagate a controlled fracture from the sharp hole-bottom corner while not crushing the surrounding rock. A cartridge containing a propellant charge is inserted at the bottom of a short hole drilled in the rock. The cartridge is stemmed by a massive bar. A firing pin in the stemming bar strikes a primer which then ignites the propellant in the cartridge. The cartridge incorporates a relief volume designed to control propellant burning rates and pressures and thus the pressure at the hole bottom. The cartridge is designed with a tapered wall, which is thicker nearer the stemming bar, and with a large radius of the inside surface of the cartridge base, which reduce the possibility for premature cartridge rupture and loss of propellant generated gases.

Abstract: A method and apparatus for deslagging a cyclone furnace in which a series of flexible hollow tubes are inserted into the combustion chamber and the explosive charges in each hollow tube are detonated sequentially. Each of the hollow tubes is biased outwardly against the accumulated slag and ash in the combustion chamber. The hollow tubes may be formed in arcs or rings in planes perpendicular to the longitudinal axis of the combustion chamber, and spacer rings may be positioned between each ring.

Abstract: A warhead having hollow charge, such as a bomblet as well as a large caliber armor-piercing projectile has an improved detonation wave guide arrangement which preferably produces a high pyrophoric effect at target impact.The detonation wave guide itself is made of an incendiary-active (flamable) material, whereby a strong exothermal reaction is released by shock waves at target impact in the binding substances which form the wave guide. By exclusively initiating this exothermal reaction and incendiary effect by means of shock waves a rapid and simple introduction of the reaction in a few microseconds is achieved. The binding substance consists of metal particles and gases embedded in matrix. These metal particles have a high combustion enthalpy and the matrix is made of an organic polymer.

Abstract: An open apex shape charge explosive device is disclosed having an inner liner defining a truncated cone, an explosive charge surrounding the truncated inner liner, a primer charge, and a disc located between the inner liner and the primer charge for directing the detonation of the primer charge around the end edge of the disc means to the explosive materials surrounding the inner liner. The disc comprises a material having one or more of: a higher compressive strength, a higher hardness, and/or a higher density than the material comprising the inner liner, thereby enabling the disc to resist deformation until the liner collapses. The disc has a slide surface thereon on which the end edge of the inner liner slides inwardly toward the vertical axis of the device during detonation of the main explosive surrounding the inner liner, to thereby facilitate the inward collapse of the inner liner. In a preferred embodiment, the geometry of the slide surface is adjusted to further control the collapse or .beta.

Abstract: This invention deals with case-less ammunition, the propelling element of which has increased solidity. This increase in solidity is achieved by virtue of the fact that the propelling charge is firmly enveloped in a fabric. The fabric may consist of completely synthetic organic fibers or of mineral bibers. The ammunition in accordance with the invention manifests increased stability during loading and transportation in the weapon and better internal ballistics data than comparable ammunition known to date on the basis of the higher tamping attained.

Abstract: The present invention relates to a projectile-forming explosive charge (1) of the type which includes a forward concave insert (2) disposed in the envisaged effect direction of the charge and being reformed on detonation of the charge into a cohesive projectile (4). According to the invention, this projectile (4) is given advantageous ballistic configuration with the aid of a specifically designed annular portion (3) which is also utilized for retaining the insert (2) in that sleeve (8) which surrounds the explosive charge (9) on the other sides.

Abstract: The invention relates to a new method of using explosives.In the past it was the practice to use the shock wave front or the pressure pulse, or both, generated by a detonated explosive mass to directly affect a target or to deform and drive a solids element against the target.In the method proposed by the present invention the explosive mass (11) and a compressible focussing means (12) are supported in a liquid medium. The focussing means (12) lie between the explosive mass and the target (T) and is spaced therefrom by liquid medium. The compressible focussing means (12) may comprise a compressible solids material or a gas volume.When the explosive mass (11) is detonated the pressure pulse, and the liquid displaced by the gas bubble generated by the detonation, serve to collapse the focussing means (12), generating high pressure liquid flows directed towards the target (T).

Abstract: A shaped charge includes a case, an explosive material packed against the inner wall of the case, and a liner for lining the explosive material, where the liner includes Bismuth and Copper powders as constituent elements. The Bismuth element replaces a Lead element which is normally present as a constituent element in prior art shaped charge liners. Bismuth is superior to Lead because all environmental concerns, with respect to the deposition of Lead in a formation, have been eliminated.

Abstract: This task is solved according to the invention by a design corresponding to the characteristic of the claim. The inert insertion according to the invention has the shape of a cylinder with a cone or truncated cone-shaped extension whereby the transition from cylinder to extension takes place without break. The inert insertion is to be arranged in the explosive of the shaped charge oriented such that it points with its free end tapering to the cone tip or top surface, respectively, of the truncated cone in the direction to the primer charge and correspondingly with its cylindrical part in the direction to the lining of the shaped charge. This inert insertion from cylinder and cone or truncated cone, respectively, has been shown to be especially favorable in comparison to the well-known forms of inert insertion. The effect of shaped charge rounds equipped with it on modern multiplate targets was significantly better than those of charges with inert insertions of conventional form.

Abstract: A method and apparatus for deslagging a cyclone furnace in which a series of flexible hollow tubes are inserted into the combustion chamber and the explosive charges in each hollow tube are detonated sequentially. Each of the hollow tubes is biased outwardly against the accumulated slag and ash in the combustion chamber. The hollow tubes may be formed in arcs or rings in planes perpendicular to the longitudinal axis of the combustion chamber, and spacer rings may be positioned between each ring.

Abstract: A shocck compression jet gun with associated explosive charge assembly. The shock compression jet gun features a breech for storage of the explosive charge assembly, a projectile tube, and an expansion nozzle disposed between the breech and projectile tube. The expansion nozzle includes converging and diverging passageways. The explosive charge assembly includes a shock absorbing outer casing, a detonator, a shaped charged positioned within the casing and a compressible medium retained within a recess formed in the shaped charge. The compressible medium is maintained within the recess by way of a membrane sealing one end of the casing. In a preferred embodiment the compressible medium is a liquid such as ammonia, water or a mixture of liquid ammonia and water which dissociate(s) into a mixture of light gases upon detonation of the shaped charge.

Abstract: A shaped charge device having a cylindrical housing, an explosive charge with a cavity at one end, a fuze, booster, a multimaterial vertically layered liner having a hemispherical, semi-hemispherical, arcuate or conical shape with a number of segments of materials, each segment in contact with the explosive charge and the cavity, each segment oriented normal, parallel or oblique to the charge axis. The detonating of the explosive charge causes the liner to form a jet of a plurality of the segments. A method of manufacture is also disclosed wherein the liners made in the vertical manner avoid mixing or interaction between dissimilar materials undergoing the jetting action. Vertically layered liners provide excellent material flow and liner collapse diagnostics.

Abstract: An explosive device which has a retainer with a groove, that houses a charge adapted to produce a shock wave upon detonation. The retainer is attached to a target such as an airplane canopy, so that the charge is spaced from the target a predetermined distance. Between the charge and the target is a transmitting medium that transmits the shock waves of the charge to the target. The transmitting medium is constructed from an essentially incompressible material such as rubber, which transmits the shock waves without dissipating much of the blast energy of the charge.

Abstract: The invention makes it possible to produce a large number of jets of material at very high speeds from different surfaces. The device essentially comprises a detonator initiating an explosive charge by causing a detonation shock wave, which leaves the explosive charge in order to simultaneously initiate all the points of the entrance surface of a projectile. A cavity is made in the projectile in order to bring about the formation of a filiform jet in accordance with the vertical axis during the ejection of the projectile. An intermediate projectile can be provided between the explosive charge and the projectile. Different shapes of cavities and projectiles makes it possible to modulate the production of the jets as a function of the form and nature of the targets to be reached. Application is possible of the invention to making openings and to dismantling of various structures, to oil drilling operations and to geothermics.

Abstract: An article of ammunition including a projectile-forming insert, wherein a supporting member which is constituted from a foam material is interposed between the insert and a structural component. The foam material possesses, at least in the region bordering against the insert, a density of at most 200 kg/m.sup.3.

Abstract: A hollow charge for piercing armor built up of several layers of differing densities, the metallic lining of which has three-dimensional isotropy and the density of which corresponds at least approximately to the crystal density of the metal, and, upon detonation, produces an incoherent, pulverulent hollow-charge jet. The associated method of manufacturing the metallic lining comprises atomization of the metal; the mixing of the resulting metal powder in a broad particle-size distribution; the filling of the metal powder into a uniform thickness, double-walled, ductile container; hydrogen flushing of the filled-in metal powder, the closure and gas-tight sealing-off of the double-walled container; hot isostatic pressing of the container; and the removal of the sealed-off container from the pressure-molded component.

Abstract: A metal liner for a shaped charge device having a ductile metal matrix and a discrete second phase is provided. The allow composition is selected so the second phase is molten when the liner is accelerated following detonation. The molten phase reduces the tensile strength of the matrix so that the liner slug is pulverized on striking a well casing. The slug does not penetrate the hole perforated in the well casing by the liner jet and oil flow into the well bore is not impeded. The liner is formed by directly casting the desired alloy to the desired shape.

Abstract: A warhead (10') which includes a shaped or projectile forming charge in the form of a liner (14) of a multi-phase metallic material or a metal-metal laminate. To prevent the liner (14) from being destroyed by the incoming shock wave and make impossible the formation of a projectile, that is, a shaped charge jet, a layer (15) is arranged, in front of the liner (14) on the side of the explosive, with the layer (15) causing the shock wave front to be flattened and damped and having an acoustic impedance which is lower than that of the liner (14).

Abstract: A shaped charge for missiles which are provided for defeating armored vehicles in such a manner that the flight path of the missile is beside, below or above the target. The warhead is ignited at an instant when the missile is either beside, below or above a weakly armored portion of the target. The shaped charge is characterized by a hollow body (liner), which is surrounded by an explosive charge. To compensate for the velocity of the missile, the explosive charge is designed such that the charge axis forms an angle with the axis of the inner counter of the hollow body (liner), and such that sections in planes normal to the axis of the inner liner contour have circular or elliptic cross sections. The liner may be designed in a way that the axes of the inner and the outer contours can be translated with respect to each other and/or inclined by a small angle toward each other. Also the cone angles of the inner and outer contours of the liner may be different.

Abstract: The device (10) consists of a bar (12) of high explosive having a planisymmetrical groove (20) along one side lined with a hollow charge liner (28). A pair of backing charges (34, 36) connected by a bridging charge (42) are disposed along the opposite side of the bar. Each backing charge is separated from the bar by a gap (38, 40) which tapers towards the common longitudinal periphery of the bar and charge. The surfaces of the backing charges facing the gaps are lined with liners (46, 48). A linear initiating charge (54) is separated from the bridging charge longitudinally of the device by a gap (61). The facing surface of the charge (54) is lined with a metal strip (58) which, when the charge is detonated, is projected across the gap (61) to initiate the bridging charge linearly. A detonation wave then propagates from the bridging charge down each backing charge towards its peripheral region, projecting the liners (46, 48) across the gaps (38, 40) to initiate the bar.

Abstract: The invention provides a kit-of-parts for assembling to form a linear cutting charge. The kit-of-parts comprises a plurality of elongate planar members (1), connecting means (3) for connecting the planar members (1) to form a box-like structure (2), a liner (9) and locating means (4) for locating said liner (9) within the box-like structure (2) to provide a space (10) on one side of the liner (9) for receiving an explosive material and a stand-off space (11) on the other side of the liner (9).

Abstract: This invention relates to an elongated flexible housing containing coexteve explosive and propellant charges. The housing is adapted to be attached to a structure to be severed and the parts separated. The explosive charge is a shaped-charged for first severing the structure into two parts. The propellant charge separates the severed parts one from another.

Abstract: The invention provides shaping apparatus for an explosive charge, particularly for use with plastic explosive in forming shaped charges. The shaping apparatus comprises a hollow cylindrical body (1), a substantially conical partition (2) within said body for shaping an explosive charge (3) inserted into the body on one side of said partition (2) and means (5) on the other side of said partition (2) for supporting a detonator (6).

Abstract: An improved liner for a warhead having a shaped explosive charge for the production of a projectile by explosive reshaping of the liner includes a liner body having a central region which has a radius of curvature which is smaller than that of a surrounding liner portion. The central region of the liner is indented relative to the surrounding liner portion along a central axis of the liner body toward the side of the liner adjacent the shaped explosive charge. Upon explosive reshaping of the liner, a projectile having an ogival shape is produced.

Abstract: Improved shaped charge assembly of relative lightweight and sealable consction and composed of nonmetallic and nonmagnetic materials that can be used for selectively destroying or disarming a variety of targets. The assembly is generally made up of casing means of tubular-like configuration, jet-forming linear means of conical shape and shaped charge body means. The liner means is interposed between the ends of the casing means where the charge body means is interposed between the casing means and the liner means at one end of the casing means. Depending upon the manner in which the assembly is to be used, at least the one end of the casing means is capped. Suitable plastic materials for use in the liner means have been found to be either polyethylene or polypropylene, having an ultra-high molecular weight.

Abstract: Explosive devices for foxhole manufacture, demolition and urban warfare. devices comprise a hollow metal cylinder; a cap at the top end closing said metal liner, said cap having a waveshaper on the interior thereof, and said cap having a hole therethrough for insertion of an ignition charge; a closure at the bottom end of said liner, said closure having the form of a liner, depressed inwardly; and an explosive composition disposed within the metal liner between the waveshaper of said cap and the depressed cone of said closure. An alternative explosive device is disclosed wherein the closure at one end of the metal cylinder is spaced apart and inwardly from the open end of said line to form a standoff space. A further explosive device is disclosed wherein additional explosive is disposed within the standoff space but leaving spaces for jet formation.