Abstract: An entanglement obstacle for obstructing an area of a surface includes a mesh layer suspended over upright perimeter members via a perimeter cable and over upright central members via a central cable. The upright members are operatively attached to the surface. The perimeter cable is operatively attached to the perimeter members at a perimeter clearance above the surface to provide a trip impediment. The central cable is operatively attached to the central members at a central clearance above the surface to provide a step-over impediment. The central clearance is greater than the perimeter clearance. The mesh layer is operatively attached to the perimeter and central cables such that the mesh layer covers the obstructed area to provide an entanglement obstacle. The mesh layer is inclined from the central cable to each of first and second sides of the obstacle at an angle defined by the central perimeter clearances.

Abstract: A system for forming one or more barbs on a length of suture is provided. The system includes a suture nest and a punch apparatus. The suture nest defines a longitudinal passage configured for receipt of a length of suture. The suture nest includes at least one recess formed along the longitudinal passage and at least one opening corresponding to the at least one recess. The punch apparatus includes at least one punch member corresponding to the at least one opening in the suture nest. The at least one punch member is configured to be selectively received within the at least one opening in the suture nest.

Abstract: The present invention provides a fencing system having interconnected tubular elements comprised of longitudinally extending conductor wires and reinforcement wires. Said conductor wires are conventionally disposed in an outer casing's cavity with an open round or rounded section. Said outer casing is formed by a crimping process such that said conductor wires are reinforced by parallelly extending reinforcement wires, the latter wires being disposed in a separate partition of the longitudinal inner volume of said outer casing. Said partition assigned to said reinforcement wires provides that said reinforcement wires does not damage said conductor wires during the final stage of crimping process in which barbed tapes with pointed and/or cutting barbs are transversely folded around the interconnected tubular elements.

Abstract: The security fence spike is attached to the upper rail of a chain link security fence or the like, to project generally diametrically through a coil of razor wire or concertina wire strung along the upper rail of the fence. The security spike is a rigid metal projection, and resists collapse when a heavy sheet of material or blanket is tossed over the coiled wire atop the fence by a person(s) attempting to scale the fence. A row of spikes is preferably installed along the upper rail of the fence, threatening injury to anyone attempting to scale the fence even after covering a coil of razor wire or the like atop the fence. The security spike is formed of sheet metal bent to form a triangular cross section for rigidity and strength. The spike is attached to a brace band, which, in turn, is clamped to the fence.

Abstract: A barbed tape product as adjacent pairs of loops in which the loops of a pair are attached to each other at an attachment point that is circumferentially offset relative to an attachment point of the adjacent pair of loops. Additional attachment points may be provided in helically progressive positions between the first and second attachment points. The attachment points are positioned on one pair of loops so that each of the attachment points are circumferentially offset relative to all other attachment points on an adjacent pair of loops. The attachment points may be positioned in a predetermined helically progressive pattern on a coil of the product. The pattern may provide a predetermined natural configuration of the product when the product is in a deployed state of use. Attachment elements for attaching strands of the product together are sized and configured for strength and accuracy in automatically attached concertina or other barbed tape products.

Abstract: A barrier structure includes a continuous piece of elongated metal tape. The metal tape includes barbs spaced along an elongate body. Each of the barbs is connected securely to a barb root, and each barb root is connected securely to the elongate body. A first region of the elongate body is adjacent to each barb root, and a second region of the elongate body is adjacent to each first region distal from the barb root. A third region of the elongate body adjacent to each second region distal from the first region extends lengthwise from each second region and meets a corresponding third region that is extending lengthwise away from another second region. Each second region extends transversely and inwardly from the adjacent first region and the adjacent third region.

Abstract: A barrier structure includes a continuous piece of elongated metal tape. The metal tape includes barbs spaced along an elongate body. Each of the barbs is connected securely to a barb root, and each barb root is connected securely to the elongate body. A first region of the elongate body is adjacent to each barb root, and a second region of the elongate body is adjacent to each first region distal from the barb root. A third region of the elongate body adjacent to each second region distal from the first region extends lengthwise from each second region and meets a corresponding third region that is extending lengthwise away from another second region. Each second region extends transversely and inwardly from the adjacent first region and the adjacent third region.

Abstract: The invention is a barbed tape barrier that includes a tube that acts as a support for the loops of barbed tape. Located within the tube is a fiber optic cable that is vibration sensitive and connected to a control unit. If an intruder disturbs the barrier, the resultant vibrations will be detected by the control unit and an alarm will be actuated.

Abstract: A barbed tape includes a central supporting portion and a plurality of barb clusters disposed at spaced apart locations along the central supporting portion, each barb cluster having first and second pairs of oppositely extending substantially planar barbs disposed on opposite edges of the central supporting portion and connected thereto, the barbs having a cross section which is at least partially arcuate, whereby the barbs are substantially stiffened against bending.

Abstract: A barrier is fixed on a wall or other perimeter structure by way of support posts. The barrier has a support shaft along which a number of rotatable units are mounted. Each rotatable unit is formed from two interengaged elements, each element having been formed from a length of metal tubing. Part of the tubing has been cut longitudinally to define blades extending from one end of a tubular portion, and splayed outwardly and spaced apart. Two such elements are assembled so that their blades interengage to form one of the units. The rotatable units so constructed are simple to manufacture, but provide an effective barrier.

Abstract: A fencing component is made from substantially co-planar loops of barbed tape which overlie each other and which are progressively spaced apart in a first direction. The sizes of the loops are chosen so that the overlying loops form apertures of desired sizes.

Abstract: A clip is disclosed for connecting two adjacent loops of segment bent helical barbed tape in close proximity to one another at a nesting point of two contiguous folds to form a concertina antipersonnel barrier. The clip includes first and second opposed flaps. The first flap includes an elongated semi-circular aperture extended therethrough and dimensioned to surround the contiguous folds in their entirety such that the clip reinforces the areas of stress concentration that lie proximate the contiguous folds. The second flap includes an identical elongated semi-circular aperture extended therethrough which functions to promote stacking of adjacent coils of helical barbed tape during storage. The clip further includes a unitarily formed locking mechanism defined by an extruded cylindrical sleeve disposed on the first opposed flap and a circular aperture extended through the second opposed flap.

Abstract: The invention provides an elongate security rail comprising a land extending in the long direction of the rail and which is connectable to the top edge of a wall or the frame of a framed fence. A series of barbed palings one spaced apart on one side of the land, and a series of spikes one spaced apart on the opposite side of the land. The land, palings and spikes are formed integrally from a strip of flat metal and subsequently bent so as to project in a generally upward direction when the land is connected to the wall. This invention also provides a method of making such a security rail.

Abstract: Security apparatus which has an outer concertina coil of barbed tape with an inner coiled electrical conductor, which may also be made from a concertina coil of barbed tape, positioned within the outer concertina coil and supported therefrom by means of insulators which prevent the conductor from coming in to electrical contact with the outer concertina coil.

Abstract: Barbed tape made from an elongated metal strip having a plurality of pairs of barbs formed along the edges thereof and the portion of the strip forming each barbed pair has a second pair of barbs formed therein. The first pair of barbs extend in opposite directions away from each other and the second pair of barbs extend in opposite directions but toward each other. The second pair of barbs serve to retain articles impaled on the first pair of barbs.

Abstract: A barbed tape is disclosed incorporating an improved barb configuration. A flat metal tape is formed having opposed barbed pairs that extend from a central portion at an angle to thus point the tips of the respective barbs away from the longitudinal axis of the tape. The central strip of the tape is clenched about a central core wire; intermediate barbs are provided to increase the effectiveness of the barrier while providing a means for positively positioning clips that are used to secure adjacent coils of the tape together.

Abstract: A helical barbed tape includes barbs with enhanced rigidity, as well as an electrical sensor wire extending along the length of the helical barbed tape so as to be capable of use in an electronic intrusion detection system to mechanically detect disturbances induced on the barbed tape or its supporting structure.

Abstract: An appartus and process is provided for forming a helical barbed tape. The process first involves supplying rolled steel which is passed to an apparatus for blanking barbs and cutting the steel into strips. The strips are mounted on individual cassettes. The tape subsequently is fed from a cassette to a barb sensor and barb setter. The barb setter moves with the tape to effect the required offset in response to the sensed presence of a barb cluster. The tape then advances to a roll former which exerts a controlled differential pressure on opposed sides of the tape to create a uniform circular coil. The tape will have an unequal thickness across its width with the differential thickness being substantially uniform along the length of the tape.

Abstract: A helical barbed tape is provided with reinforced barbs. The tape includes a plurality of barb clusters at spaced locations along a central supporting portion. Each barb cluster includes a pair of oppositely directed barbs with the respective pairs being disposed on opposite sides of the central supporting portion. The reinforcement is defined by a portion of the respective barbs which extends out of the initial plane of the barbs. In one embodiment, the reinforcement defines an elongated reinforcing flange. In other embodiments, the reinforcement defines an embossment extending out of the plane of the barbs.

Abstract: A metal tape barrier is constructed of straight sections of elongated tape having barbs formed at spaced intervals along the tape. The barrier has a triangular configuration in cross section with the sections of tape forming the legs of the triangle. Adjoining convolutions of the barrier are connected together at spaced points in such a manner that the tape sections assume accordian pleat-like configurations when the barrier is stretched lengthwise for installation. A second set of sections of tape may be added to the barrier and may have their ends connected to intermediate regions of the sections forming the legs of the triangle. This second set of tape sections are disposed to close off the inside of the main triangle of the barrier. Connections to end regions of the tape sections are made at the location of the barbs on the tape so that the barbs project beyond the connections. In one configuration the barrier has a cross section like an isosceles triangle.

Abstract: A metal tape barrier has a generally constant edgewise arcuate curvature and a channel providing a lengthwise bight having a reinforcing wire therein. The tape wraps from about 200.degree. to about 220.degree. of the periphery of the wire, just sufficient to hold the wire in place. Continuous flange regions of the tape extend outwardly of the channel and cooperate with the channel and the reinforcing wire to impart strength to the barrier so that it is self-supporting and is resistant to being collapsed. The tape has barbs formed outwardly of the flange regions and reduced width regions of the flange regions at the roots of the barbs enhance the penetration capabilities of the barbs.

Abstract: A continuous strip of coiled material is provided with protrusions, such as barbs, which are oriented to eliminate mutual interference when the coiled material is stacked in a compact, collapsed nested condition and wherein each turn of the coil is permanently fixed at equiangularly spaced multiple points alternately to its adjacent trailing and leading turns of the coil. An intrusion detection system signals intrusion into the space encompassed by the above mentioned coil and features a microwave energy source, receiver and detector for indicating a reduction in received microwave energy at the receiver indicative of intrusion into or other disruption of the energy guided path determined by the coil.

Abstract: A defensive personnel barrier and method for fabrication thereof includes an elongated metal strip having a longitudinally extending bend therein to form a spine extending therealong with laterally opposed flanges extending obliquely from the spine. Each flange is stamped or die cut to provide a plurality of cuts spaced therealong and extending diagonally from the spine to the outer edge of the flange. The diagonally cut portions are bent upwardly from the plane of the flange to form a plurality of barbs spaced longitudinally in the metal strip. The barbs of the opposed flanges are staggered longitudinally, and the edges of the barbs are sufficiently sharp to discourage manual grasping of the strip. One or more strips may be secured atop a fence or similar barrier to discourage climbing thereon. The barrier strips may also be secured to existing linear barbed wire strands by means of a saddle block and J bracket assembly provided by the invention.

Abstract: An explosive obstacle wire for rapid emplacement with bare hands. The wire is assembled in a configuration wherein barbs or other hazardous elements are ineffective. After installation in an obstacle the barbs can be quickly deformed into a hazardous configuration by explosive means. This abstract is prepared to facilitate searching and it should not be construed as a limitation of the invention.

Abstract: An explosive barrier wire for rapid emplacement with bare hands. The wire is assembled in a configuration wherein barbs or other hazardous elements are ineffective. After installation in an obstacle the barbs can be quickly deformed into a hazardous configuraton by explosive means.

Abstract: Coiled tape having successive linear segments each of equal length and uniformly angularly offset in the plane of the tape at identical bend angles relative to its trailing segment about a bend forming opening of predetermined size and shape.

Abstract: A method of forming barrier wire by explosive means. A strip of deformable material provided with grooves or slits intersecting its edges is wrapped helically around a strand of wire or explosive cord. An explosion is caused within the helix, thus deforming pointed portions of the strip generally out from the helix.

Abstract: A barbed wire comprises a metal strip having a longitudinally extending reinforcing rib portion and at least one plate portion extending laterally outwardly from the rib portion along its length. The plate portion has a series of triangular contiguous pointed projection portions with longitudinally extending bases and with an apex point extending outwardly from the bases offset longitudinally from the point of intersection of adjacent bases of the respective triangular projection portions. The rib portion may be reinforced by a thickened formation and a plurality of plates may extend, for example, radially outwardly from the reinforcing rib portion.