Abstract: A coaxial cable may include an inner conductor, an outer conductor, and a dielectric material layer therebetween. The inner conductor may include a tubular bimetallic layer having a pair of opposing longitudinal edges at a longitudinal seam. The tubular bimetallic layer may include an inner metal layer and an outer metal layer bonded thereto with the inner metal layer having a lower melting point than the outer layer. At least one of the opposing longitudinal edges of the tubular bimetallic layer may be at least partially bevelled. In addition, the longitudinal seam may include a welded joint between at least portions of the opposing longitudinal edges.

Abstract: A coaxial cable may include an inner conductor, an outer conductor, and a dielectric material therebetween. The inner conductor may include a tubular bimetallic layer having a pair of opposing longitudinal edge portions at a longitudinal seam. The tubular bimetallic layer may include an inner metal layer and an outer metal layer bonded thereto. At least one of the opposing longitudinal edge portions may define at least one folded edge portion including an end portion of the inner metal layer extending beyond a corresponding end portion of the outer metal layer and being folded adjacent thereto and defining a non-joined interface therewith. The longitudinal seam may include a welded joint between at least portions of the inner metal layer.

Abstract: A coaxial cable may include an inner conductor, an outer conductor, and a dielectric material layer therebetween. The outer conductor may include a tubular bimetallic layer having a pair of opposing longitudinal edges at a longitudinal seam. The tubular bimetallic layer may include an inner metal layer and an outer metal layer bonded thereto with the outer metal layer having a lower melting point than the inner layer. At least one of the opposing longitudinal edges of the tubular bimetallic layer may be at least partially bevelled. In addition, the longitudinal seam may include a welded joint between at least portions of the opposing longitudinal edges.

Abstract: A coaxial cable may include an inner conductor, an outer conductor and a dielectric material layer therebetween. The outer conductor may include a tubular bimetallic layer and may have a pair of opposing longitudinal edge portions at a longitudinal seam. The tubular bimetallic layer may include an inner metal layer and an outer metal layer bonded thereto and coextensive therewith. In addition, the opposing longitudinal edge portions may be angled outwardly to define a pair of adjacent outwardly extending tabs.

Abstract: A coaxial cable may include an inner conductor, an outer conductor and a dielectric material layer therebetween. The inner conductor may include a tubular bimetallic layer and may have a pair of opposing longitudinal edge portions at a longitudinal seam. The tubular bimetallic layer may include an inner metal layer and an outer metal layer bonded thereto and coextensive therewith. In addition, the opposing longitudinal edge portions may be angled inwardly to define a pair of adjacent inwardly extending tabs.

Abstract: A coaxial cable is disclosed that includes a signal line, an insulating layer for coating the signal line, a first shield having a tape-like conductor wound around the insulating layer and a second shield composed of a conductor provided around the outer periphery of the first shield. The coaxial cable further includes multiple coaxial cables of equal length, a fixing member for bundling the multiple coaxial cables, a signal line connecter for connecting the multiple coaxial cables, and a shield connector for connecting the shields of the multiple coaxial cables.

Abstract: A highly flexible shielded electrical line for high-frequency data transmission in swivel-mounted display units having two current supply wires (20; 21) and/or at least two data wires (18; 19), provides a shielding (35) of non-insulated metallic cables enclosing the wires (18; 19; 20; 21), which are stranded and/or bundled or combined in pairs, in their entirety, [the shielding] being covered externally by a conductive non-woven fabric/mesh/mat (36) electrically contacting the shielding (35) all around, the conductive non-woven mat finally being encased by an external sheath (37) made of silicone rubber (FIG. 3).

Abstract: The coiled wire armored cable (10) includes transmission wires (14) encased by an insulator (12). A solid protective wire (16) is spirally wound over the exterior of the insulator. The protective wire (16) is fabricated from a metal, such as steel or titanium material, and will have a gauge that prevents a rodent from chewing through the wire. The coils of the protective wire are spaced apart along the length of the cable. The spacing (a) of the coils will be less than the width of the teeth of the rodent so that the coils create a “fence” that prevents the rodent's teeth from contacting the insulator.

Abstract: An insulating layer 3 mainly composed of a fluorine resin is provided at an outer periphery of an inner conductor 2 to provide an inner insulated wire 4. A skin layer 5 mainly composed of a fluorine resin and doped with titanium oxide and carbon black or the titanium oxide and nickel as color pigment is provided at an outer periphery of stranded inner insulated wires 4. An outer conductor (shield) 6 is provided at an outer periphery of the skin layer 5, and a sheath layer (jacket) 7 is provided at an outer periphery of the outer conductor 6, to provide a signal transmission cable 1 having excellent electric characteristics, mechanical characteristics and terminal workability.

Abstract: A cable for high speed data communications and method of manufacturing the cable, the cable including a first inner conductor enclosed by a first dielectric layer and a second inner conductor enclosed by a second dielectric layer, the inner conductors and the dielectric layers twisted in a rotational direction at a periodic rate along and about a longitudinal axis and conductive shield material wrapped in the rotational direction at the periodic rate along and about the longitudinal axis around the inner conductors and the dielectric layers, including overlapped wraps at the periodic rate along and about the longitudinal axis.

Abstract: The cables include belted insulated conductors, a compression and creep resistant jacket surrounding the insulated conductors, a filler material and compression resistant filler rods placed in interstitial spaces formed between the compression and creep resistant jacket and the insulated conductors, and at least one layer of armor wires surrounding the insulated conductor and compression and creep resistant jacket. The filler material may be a non-compressible filler material.

Abstract: The invention concerns a protective sheath against radiation, in particular derived from electric field generated by electric cables (1, 2, 3) extending inside the sheath. The invention is characterized in that it comprises an electrically insulating plastic outer layer (4) covering an electrically conductive material layer (5), the sheath end including removable connecting means for connecting the electrically conductive material layer (5) to an electrical conductor (7) designed to be connected to the ground, said sheath enclosing or designed to enclose at least one neutral cable (1), one ground cable (2) and one phase cable (3) connected to an electric power distribution system.

Abstract: A process for manufacturing a cable includes the steps of conveying at least one conductor to an extruder apparatus; extruding an insulating coating layer radially external to the at least one conductor; longitudinally folding a metal tape around the extruded insulating coating layer, the metal tape bearing at least one adhesive coating layer in a radially external position; and extruding at least one continuous coating layer of at least one polyamide or a copolymer thereof around and in contact with the folded metal tape. The step of extruding the at least continuous coating layer is carried out at a draw down ratio not higher than 2.5, preferably, 1.2 to 2.0.

Abstract: Wellbore electrical cables according to the invention include at least one insulated conductor, at least one layer of armor wires surrounding the insulated conductor, and a polymeric material disposed in the interstitial spaces formed between armor wires and interstitial spaces formed between the armor wire layer and insulated conductor which may further include wear resistance particles or even short fibers, and the polymeric material may further form a polymeric jacket around an outer, layer of armor wires. The insulated conductor is formed from a plurality of metallic conductors encased in an insulated jacket.

Abstract: Coaxial and twisted pair conductive yarn structures reduce signal crosstalk between adjacent lines in woven electrical networks. A coaxial conductive yarn structure includes an inner conductive yarn having a plurality of conductive strands twisted together. An outer conductive yarn is wrapped around the inner conductive yarn. An insulating layer separates the inner and outer yarns. A twisted pair conductive yarn structure includes first and second conductive yarns, each including a plurality of conductive strands being twisted together. The first and second conductive yarns are twisted together to form a helical structure. In a woven electrical network, at least one conductor of adjacent conductive yarn structures is connected to ground to reduce signal crosstalk. Coaxial and twisted pair yarn structures may also be formed simultaneously with weaving or knitting the threads that make up the structures into a fabric.

Abstract: A micro coaxial cable includes an inner conductor; an insulation layer having foaming cells and formed to surround the inner conductor; an over-foaming preventing layer formed to surround the insulation layer for the purpose of uniform forming of the foaming cells; a metal shield layer formed to surround the over-foaming preventing layer; and a protective coating layer formed to surround the metal shield layer. The over-foaming preventing layer restrains abnormal growth of foaming cells formed in the insulation layer such that the foaming cells are successively adjacently formed with uniform size. Due to the uniformity of foaming, the dielectric constant of the insulation layer is not locally different but uniform as a whole, thereby capable of improving transmission characteristics. In addition, the micro coaxial cable enables to transmit signals even at a high frequency transmission of GHz range, which was impossible in the prior art.

Abstract: Cables used with wellbore devices to analyze geologic formations adjacent a wellbore are disclosed. The cables include one or more armor wires formed of a high strength core surrounded by a corrosion resistant alloy clad. The cables may be employed as a slickline or multiline cables, where the armor wire is used to convey and suspend loads, such as tools, in a wellbore. The cables may also be useful for providing wellbore related mechanical services, such as, jamming, fishing, and the like.

Abstract: Disclosed are durable corrosion resistant wellbore electrical cables including a coated electrical conductor, a polymeric protective layer for trapping coating flakes, a first insulating jacket disposed adjacent to the polymeric protective layer and having a first relative permittivity. A second insulating jacket is disposed adjacent to the first insulating jacket and has a second relative permittivity that is less than the first relative permittivity. Another aspect of the invention is a method for manufacturing a cable that includes providing a coated electrical conductor, extruding a polymeric protective layer over the coated electrical conductor, extruding a first insulating jacket over the protective polymeric layer, and extruding a second insulating jacket thereon. Cables of the invention may further include armor wire layers or even current return conductors.

Abstract: A low cost, high performance, water-swellable, flexible reinforcement member that can be used for both optical and copper communications cable. The water-swellable reinforcement members made according to the preferred process are more rigid than known reinforcement members, but are less rigid than glass pultruded rods. Communications cables utilizing these members are lightweight, water-swellable and exhibit an improved combination of strength and flexibility compared to traditional communications cables. Further, these communication cables may then be installed into underground ducts using more economical and faster installation techniques.

Abstract: Electric cables used with wellbore devices to analyze geologic formations adjacent a wellbore including at least one insulated conductor, and one or more armor wires surrounding the insulated conductor, the armor wires formed of a high strength core surrounded by a corrosion resistant alloy clad. The alloy clad includes such alloys as beryllium-copper based alloys, nickel-chromium based alloys, superaustenitic stainless steel alloys, nickel-cobalt based alloys, nickel-molybdenum-chromium based alloys, and the like. The cables of the invention may be any useful electric cable, including monocables, quadcables, heptacables, quadcables, slickline cables, multiline cables, coaxial cables, or seismic cables.

Abstract: A method of manufacturing a ribbon cable, comprising providing a set of insulated wires and aligning said insulated wires in a predetermined arrangement. The insulated wires are warmed sufficiently for said insulation to be become soft and adhesive, are pressed together so that they adhere to one another and allowed to cool, to form a ribbon cable.

Abstract: A low cost, high performance flexible, rodent resistant reinforcement member that can be used for both optical and copper communications cable. The reinforcement members made according to the preferred process are more rigid than known reinforcement members, but are less rigid than glass pultruded rods. Communications cables utilizing these members are lightweight and exhibit an improved combination of strength and flexibility compared to traditional communications cables. Further, these communication cables may then be installed into underground ducts using more economical and faster installation techniques.

Abstract: An electrical cable (K) has at least two strands (1) consisting of insulated conductors (2) stranded together. Insulation on the strands (1) consists of an inner layer in contact with the conductor, and which is softer than an outer layer. The strands (1) are surrounded by an inner sheathing (6). The cable (K) also has an electric shield (7) and an outer sheathing (8). A separator layer (5) is between the strands (1) and the inner sheathing (6), consisting of an inner layer (6a, 6b) fixedly joined together with an outer layer (6b). The inner layer (6a) facing the strands (1) is softer than the outer layer (6b), having an approximately circular peripheral surface and in firm contact with the separator layer (5) or the strands (1). The electric shield (7) consists of at least one essentially closed tubular metallic layer and a stranded layer and/or braiding of metallic wires in contact with the metallic layer.

Abstract: A self-sealing sleeve (10) is provided having an inner layer (12) and an outer layer (14). The inner layer is composed of a thermally inert material and is configured to have a self-sealing overlap (16). The outer layer (14) is made of a heat reflective, insulating material and is disposed along the periphery of the inner layer (12) thereby providing heat insulation and protection from corrosives to wires, conduits and like disposed in the lumen (20) of the sleeve (10).

Abstract: A pourable liquid composition comprising water, a water soluble or water swellable organic polymer, comprising 25 to 90 mole % monomer or monomers selected from the group consisting of C8-C30 alkyl ethoxylated (meth)acrylates, C8-C30 alkyl ethoxylated (meth)acrylamides, C8-C30 alkyl (meth)allyl ethers and C8-C30 alkyl ethoxylated (meth)allyl ethers, an organic water miscible liquid selected from the group consisting of C1-5 alcohols, C3-5 ketones, C2-5 esters and C2-5 ethers, characterized in that the organic polymer is present as discrete particles of average diameter size of below 10 microns. A process of imparting water resistance to the components of a cable said process by first contacting one or more of said components of a cable with said pourable liquid composition, and then assembling the components to form the cable. The composition is particularly suitable for protecting optical fibers within a fiber optic cable against the ingress of water.

Abstract: An electrical submersible pump cable having an integral capacitor. The electrical submersible pump cable has a primary conductor with an insulator surrounding the primary conductor. A coaxial conductive layer surrounds the insulator, wherein the insulator serves as a dielectric between the primary conductor and the coaxial conductive layer. An outer insulating sleeve is provided on an outer surface of the coaxial conductive layer. An inner cable armor surrounds the insulating sleeve, wherein the outer insulating sleeve provides electrical isolation between adjacent wires. An outer cable armor surrounds the inner cable armor. The coaxial conductive layer and primary conductor enables the coupling of data information onto or off of the cable.

Abstract: The present invention is an adhesive that can be used to bond a cable jacket to an outer conductor to produce an excellent bond peel strength and that also allows the jacket to be separated from the outer conductor to produce a residue that can easily be removed from the outer conductor. The adhesive includes polyethylene, a copolymer derived from ethylene and at least one monomer selected from the group consisting of acrylic acid, methacrylic acid, methyl acrylate and ethyl acrylate; and a resin derived from at least one unsaturated C5 hydrocarbon monomer. The adhesive preferably further includes a hindered phenolic antioxidant. The present invention further includes cables and particularly coaxial cables that include this adhesive composition.

Abstract: An electrically-conductive, thermally-insulating structure includes a thermally-insulating layer having a thermal conductivity of no more than about 3.5×10−3 W/hr·cm·°K and an electrically-conductive layer, applied to the thermally-insulating layer, which has an electrical resistivity of no more than about five ohms at 700° C. The thermally-insulating layer can include a plurality of microballoons to decrease the density of the thermally-insulating layer.

Abstract: A method of making a flexible coaxial cable comprises the steps of providing a resiliently compressible dielectric core having an inner conductor, such as a core comprised of wrapped expanded Teflon tape or a compressible foam material having memory, which is compressed and drawn through a flexible hollow outer conductive sheath comprising a corrugated portion having a plurality of peaks and valleys of predetermined pitch. The innermost circumference of the sheath is less than the outermost extent of the dielectric core so that when the compressed core has been drawn through the sheath, it expands to lock the core to the sheath. An air pressure against the convolutions of the sheath to prevent elongation of the pitch when the oversized compressed core is pulled through.

Abstract: A shielding tape, wherein a shielding layer is laminated on one side with an adhesive agent layer for a core for adhering an insulation shielding material of a core wire, and laminated on the other side with a reinforcing seat layer, and laminated with an adhesive agent layer for a sheath for adhering the sheath on the reinforcing seat layer, is characterized in that adhesive strength of the adhesive agent layer for the core to the insulation shielding material is smaller than adhesive strength between the respective layers. Preferably, the shielding materials and the sheath are composed of a non-halogen material, the adhesive agent for core and the adhesive agent for sheath are composed of the non-halogen material, and adhesive force of the adhesive agent for core to the insulating material is smaller than adhesive force of the adhesive agent for sheath to the sheath.

Abstract: The communications system transmits both communications signals and electrical power to a plurality of subscribers. The communications signals can include video, voice and data signals. The communications system includes a coaxial drop cable for transmitting both the communications signals and electrical power from a cable tap to at least one subscriber of the communications system. The coaxial drop cable includes an annular outer conductor surrounding the dielectric material and having a mechanically and electrically continuous, non-overlapping tubular metallic shield. The coaxial drop cable has predetermined signal transmission characteristics, including enhanced shielding properties, which are maintained while the coaxial drop cable is flexed due, at least in part, to an increase in the stiffness of the dielectric material relative to the outer conductor.

Abstract: Multilayer structure having a first layer of a fire retardant polyolefin comprising composition and a second layer of a polyamide comprising composition comprises up to 20% by weight of a phosphonate ester having the structure: ##STR1## wherein the value of "x" is 0 or 1.

Abstract: The invention provides a water-blocking composite comprising a substrate impregnated with or having a coating of a mixture of a radiation-polymerised compound and a water-swellable compound, and method for production thereof.

Abstract: An electrical insulating polyester film has an apparent density of 1.37 to 0.85 g/cm.sup.3 and a tensile modulus of 2.0 to 4.5 GPa.A film having low oligomer content, low cost, high heat resistance, high impact resistance, superior machinability and processability, assembling stability, and superior visibility is obtained. Furthermore, leakage of current is reduced when it is used for motor insulation.

Abstract: The present invention features a high-temperature, automotive-wire article having a thin wall construction and an operative temperature of at least 135 degrees Centigrade. The wire article is made of an inner core of copper that is surrounded by a single layer of insulation, the latter of which includes an integral composite of two insulations. The inner layer of the composite consists of a fluorocarbon material; the outer layer of the composite is made of an irradiated, cross-linked polyolefin material. The outer layer may be irradiation cross-linked with between approximately 60 to 400 kGy, and preferably between 100 and 200 kGy. The inner and outer layers can optionally be adhesively bonded together or thermal fused together using a meltable resin, in order to form a single layer. The total wall thickness of the composite is less than approximately 0.5 mm.

Abstract: The method for manufacturing a core comprises the following steps: providing a strip made of an electrically conductive material, shaping the strip into a tube, the two edges of the strip being substantially in contact, and welding together the two edges of the tube-shaped strip, via laser welding, in order to form the core (1). The method is preferably performed continuously using a continuous strip of substantial length, in an advantageous manner, the shaped and welded tube undergoes calibration, then a surface treatment intended to promote the adhesion of the insulating material (6) so as to insulate the core with respect to the external conductor (8) of the coaxial cable.

Abstract: A communication cable includes a first plurality of twisted pairs of electrical conductors, wherein each electrical conductor is surrounded by a layer of plenum rated insulation. The cable also includes a second plurality of twisted pairs of electrical conductors, wherein one conductor of each pair is surrounded by a layer of plenum rated insulation and the other electrical conductor is surrounded by a layer of non-plenum rated insulation. In an alternate embodiment, a communication cable includes a plurality of twisted pairs of electrical conductors, each pair having a first insulating material about one of the electrical conductors and a second insulating material about the second electrical conductor.

Abstract: A high-speed cable includes first and second coaxial conductor sets which are disposed in mirror image fashion within a carbon-impregnated polymer jacket. Each coaxial conductor set includes a wire core surrounded by a dielectric layer and a ground conductor disposed along side the dielectric layer. The wire core, the dielectric layer and the ground conductor are themselves surrounded by a conductive shield layer. In addition to assisting in bleeding off accumulated electric charge, the polymer jacket also preserves conductor set alignment and planarity especially following handling, cutting, trimming and stripping operations. The cable is excellent for high-speed applications, is easily routed and preserves its electrical properties under various field conditions.

Abstract: A nonuniform dielectric is located proximate to a conductive surface, the dielectric being substantially nonuniform with respect to the surface area of that conductive surface. If there are plural closely spaced conductors in a structure, then the nonuniform dielectric is located outside the space between these closely spaced conductors. Making the proximate dielectric nonuniform instead of uniform can provide advantages in better electrical performance for the proximate conductor.

Abstract: A metal sheath for surrounding a cable core consists of at least one shell part which is formed from a spring-hard steel strip. The shell part is formed by a method of bending a spring-hard steel strip into a shell having a transverse cross-section of at least a semi-circle so that after release, the shell springs back to the desired diameter for receiving the cable core.

Abstract: A coaxial, fiber optic, or twisted pair cable having a is core surrounded by an armor layer and an outer protective jacket such that relative movement between the armor layer and the protective jacket is permitted. The armor layer has a pair of opposing longitudinal edge portions and is wrapped around a cable core such that a longitudinally extending seam is produced. The outer surface of the armor layer has an adhesive layer disposed thereon for bonding an outer protective jacket thereto. Portions of the outer surface of the armor layer adjacent the longitudinally extending seam are oxidized, thereby effectively neutralizing the adhesive layer. The oxidized portions of the armor layer reduce, if not eliminate, adherence between the protective jacket and the armor layer along the longitudinally extending seam.

Abstract: An optical fiber cable includes one or more component cables. In one embodiment, the component cable has an elongated central aramid yarn member surrounded by at least one, and preferably six, optical fibers. An aramid yarn layer surrounds and contacts the optical fibers, and a plastic jacket envelopes and contacts the aramid yarn layer. In a second embodiment, the component cable includes optical fibers, preferably twelve in number, embedded in aramid fibers. A plastic jacket in contact with the aramid fibers, encloses the aramid fibers with its embedded optical fibers. In the cable of this invention, component cables of the first and/or second embodiments are wound about an elongated, central strength member with a reverse-oscillated lay. An outer jacket encloses and holds the reverse-oscillated lay of the component cables. The invention also includes a system for manufacturing the cables of this invention.

Abstract: A flexible cable assembly (1) is constructed with flexible and hollow armor (2) lying limply within an air gap (3) in a flexible outer jacket (4), multiple coaxial cables (5) lying limply within an air gap (6) in the armor (2), a coupling (7) for connection to a medical instrument (9), the coupling (7) being secured to an end of the armor (2) and an end of the jacket (4), with the cables (5) extending through the coupling (7) for connection to the medical instrument (9).

Abstract: A reinforced coaxial cable for underground service is disclosed. The cable generally includes an elongate center conductor, a surrounding dielectric material such as a foamed polymer dielectric, an outer conductor, a first jacket, an intermediate protective layer, and a second jacket. A ripcord can be positioned longitudinally between the first jacket and the intermediate protective layer to facilitate removal of both the intermediate protective layer and the second jacket. A tracer, or other visible indicia, extends longitudinally along the outer surface of the second jacket to facilitate locating the underlying ripcord. The intermediate layer and the second jacket provide increased impact resistance, cut-through resistance, and compressive strength, as well as increased resistance to abrasion and other frictionally induced damage. In addition, the intermediate layer and second jacket can be readily removed to allow increased flexibility or connectorization of the cable.

Abstract: A high-voltage lead intended for use in ignition systems of engines, typically large engines, the lead having an inner insulated conductor surrounded either by an inner conductive sleeve and an outer insulating sleeve, or by a single insulating sleeve with a conductive layer on its inner surface. The conductive sleeve or conductive layer, which is preferably non-metallic, provides shielding but permits the use of conventional pickup devices to detect electrical pulses in the lead and thereby monitor engine performance with the use of a timing light, oscilloscope or similar device. The presence of two insulating layers provides a desired measure of safety in the presence of an explosive gas and air mixture. The conductive layer provides both shielding and static electricity discharge. The structure of the invention is less expensive than ignition leads with conventional braided stainless steel shielding, and requires less effort and cost to maintain in safe condition.

Abstract: A cable for use within customer premises that effectively extends outside plant service to within the building. The cable has first and second core assemblies preferably formed of flame resistant material completely isolated from each other and surrounded by a shielding member having a rough FIG. 8 configuration. Each of the cores is completely enclosed within the loops formed by the shielding member and completely isolated from the other core. The shielding member is surrounded by a preferably flame resistant outer jacket.

Abstract: This invention relates to an energy conducting cable assembly. In accordance with one aspect of the present invention, the assembly comprises a conductor covered by at least one layer of insulation, and a longitudinally welded corrugated brass sheath formed about the insulation so as to effect a hermetic seal about the conductor. The cable has an ampacity and fault carrying capacity which approximates that of a cable having a like diameter sheath of chemical lead. The sheath preferably has a corrugation pitch to corrugation depth ratio of less than about 3.75 and an outside sheath diameter to sheath wall thickness ratio of greater than about 100.

Abstract: A method for manufacturing a coaxial cable is described, whereby a dielectric layer (2) is extruded over an inner conductor (1), a lengthwise incoming metal strip (3) is formed into a tube, having a lengthwise slot around the insulated conductor (1, 2). The tube (3) is welded along the slot to thereby form a welded seam (4), and the welded tube is drawn down onto the surface of the dielectric layer (2). A metal strip (3a) having a plastic coating (3b) at least on one of its major surfaces is used to form the tube (3), and its lengthwise edges are welded by a laser (19).

Abstract: A barrier to termites particularly suitable for protecting buildings comprising a mesh made of a material that is resistant to breakdown in the environment of use and is resistant to secretions deposited by termites, such as stainless steel, and is also sufficiently hard to not be attacked by termites, such as having a hardness not less than about Shore D70. The pores of the mesh being dimensioned so the maximum linear dimension in any direction of the pores is less than the maximum linear dimension of the cross-section of the head of the species of termite to be controlled.

Abstract: An electrical power cable with a stranded conductor, a semi-conductive stress control layer around the conductor, a layer of insulation around the stress control layer, a semi-conductive insulation shield laser around the layer of insulation, an imperforate metal strip with overlapping edge portions around the shield layer and a polymeric jacket around the metal strip. The strip is free to move with respect to the jacket and the shield layer with expansion and contraction of the cable elements with temperature changes, and the overlapping edge portions of the strip are bonded together by an adhesive which permits the edge portions to move relative to each other with such temperature changes without creating fluid passageways between the edge portions. A cushioning layer can be between the shield layer and the strip and preferably, the cable is water sealed.