Abstract: A method for pressure pipe drilling a pipe comprising an exterior layer and an interior layer, the method comprising internally lining the pipe with a fluid-tight sheath; drilling a first cavity through the exterior layer until exposing the interior layer; injecting a sealant into the first cavity; and drilling a second cavity within the first cavity through the interior layer and the fluid-tight sheath.

Abstract: A method of forming a plurality of individual heating cables sets includes creating at least a portion of a master cable set by coupling alternating sections of cold and hot cable section, each section of cold cable section having a length twice a model cold cable section length and each section of hot cable section having a length twice a model hot cable section length. A continuous metallic ground sheath is applied about substantially all of the master cable set and a continuous outer jacket is applied about the continuous metallic ground sheath. The master cable set is segmented at defined locations to create a plurality of individual heating cable sets having an overall length of the model hot cable section length plus the model cold cable section length.

Abstract: Methods and systems for installation of a liner inside a conduit (e.g., water pipe) to transport a fluid (e.g., potable water) to rehabilitate the conduit, in which the liner can be installed, and thus the conduit can be rehabilitated, more efficiently, including, for example, by further reducing an extent of digging that may have to be done, by testing more readily (e.g., pressure-testing for watertightness or other fluid-tightness once installed), and/or by adapting to a cross-sectional size of the conduit. Also, the liner may be thinner, interact better (e.g., less) with the fluid flowing through the conduit, and/or be otherwise designed to enhance its use and performance.

Abstract: A heating cable assembly includes a joint housing that includes a body formed of an electrically insulating material. The body includes a floor, a pair of outer walls and a pair of inner walls positioned intermediate the pair of outer walls. The walls form an inner insulating channel and a pair of outer insulating channels. A pair of openings is defined above each of the insulating channels, the openings being devoid of material to allow at least a portion of one or more conductors to be installed into the insulating channels from above. One of two hot conductors and one of two cold conductors are connected at a first joint and another hot conductor and another cold conductor are connected at a second joint. The first and second joints are positioned in one of the insulation channels beneath one of the openings with an insulating wrap installed about the housing.

Abstract: Methods and systems for installation of a liner inside a conduit (e.g., water pipe) to transport a fluid (e.g., potable water) to rehabilitate the conduit, in which the liner can be installed, and thus the conduit can be rehabilitated, more efficiently, including, for example, by further reducing an extent of digging that may have to be done, by testing more readily (e.g., pressure-testing for watertightness or other fluid-tightness once installed), and/or by adapting to a cross-sectional size of the conduit. Also, the liner may be thinner, interact better (e.g., less) with the fluid flowing through the conduit, and/or be otherwise designed to enhance its use and performance.

Abstract: Methods and systems for installation of a liner inside a conduit (e.g., water pipe) to transport a fluid (e.g., potable water) to rehabilitate the conduit, in which the liner can be installed, and thus the conduit can be rehabilitated, more efficiently, including, for example, by further reducing an extent of digging that may have to be done, by testing more readily (e.g., pressure-testing for watertightness or other fluid-tightness once installed), and/or by adapting to a cross-sectional size of the conduit. Also, the liner may be thinner, interact better (e.g., less) with the fluid flowing through the conduit, and/or be otherwise designed to enhance its use and performance.

Abstract: A method for pressure pipe drilling a pipe comprising an exterior layer and an interior layer, the method comprising internally lining the pipe with a fluid-tight sheath; drilling a first cavity through the exterior layer until exposing the interior layer; injecting a sealant into the first cavity; and drilling a second cavity within the first cavity through the interior layer and the fluid-tight sheath.

Abstract: Methods and systems for installation of a liner inside a conduit (e.g., water pipe) to transport a fluid (e.g., potable water) to rehabilitate the conduit, in which the liner can be installed, and thus the conduit can be rehabilitated, more efficiently, including, for example, by further reducing an extent of digging that may have to be done, by testing more readily (e.g., pressure-testing for watertightness or other fluid-tightness once installed), and/or by adapting to a cross-sectional size of the conduit. Also, the liner may be thinner, interact better (e.g., less) with the fluid flowing through the conduit, and/or be otherwise designed to enhance its use and performance.

Abstract: A seamless tubular liner for repairing an underground or surface pipe is disclosed, including circumferential wefts consisting of slivers comprising a plurality of staple fibers bundled together, the slivers adapted to elongate through disentanglement of the bundled staple fibers when the seamless tubular liner is subjected to an inflation pressure such that the diameter of the tubular liner is able to expand to accommodate variations of diameter of the pipe being repaired.

Abstract: A cable includes a first wire-shaped metal conductor, a second metal conductor extending a predetermined distance away from and parallel to the first conductor, and a matrix made of a PTC material extending along the conductors, touching the latter and connecting them to one another electrically, with temperature-dependent electrical resistance and a positive temperature coefficient. At least one electrically insulating outer insulation layer surrounds the conductors and the matrix annularly. At least a third and a fourth metal conductor extend a predetermined distance away from and parallel to the first conductor, touch the matrix and are connected electrically by means of the latter to the first conductor, the second, the third and the fourth conductor being made in a wire shape and, considering the cross-section of the cable, being arranged distributed evenly over a circular track surrounding the first conductor.

Abstract: A method and apparatus for inserting a tubular liner impregnated with a hardening resin into the conduits or pipes to be rehabilitated is disclosed. The apparatus is a tool comprising a cylindrical segment and a conical segment, the cylindrical segment and the conical segment connected together to form a passageway adapted to guide a tubular liner inside a host pipe.

Abstract: A heating cable installation includes a heating cable having a first metallic conductor and at least a second metallic conductor, spaced from and extending substantially parallel to the first metallic conductor. A PTC (positive temperature coefficient) matrix is electrically coupled about the first and second metallic conductors. A compressible insulator is disposed about the PTC matrix, the compressible insulator being compressible to allow thermal expansion of the PTC matrix. A rigid, outer encasement material prevents outward expansion of the heating cable.

Abstract: A method of forming a plurality of individual heating cables sets includes creating at least a portion of a master cable set by coupling alternating sections of cold and hot cable section, each section of cold cable section having a length twice a model cold cable section length and each section of hot cable section having a length twice a model hot cable section length. A continuous metallic ground sheath is applied about substantially all of the master cable set and a continuous outer jacket is applied about the continuous metallic ground sheath. The master cable set is segmented at defined locations to create a plurality of individual heating cable sets having an overall length of the model hot cable section length plus the model cold cable section length.

Abstract: A structural liner for reinforcing existing underground water conduits to resist earthquakes and landslides adapted for insertion into underground water conduits without having to excavate are disclosed. The reinforcement structural device consists of a seamless woven tubular sheath impregnated with a hardening resin which is adapted for insertion into a network of underground water conduits without the need to excavate. The seamless woven tubular sheath consists of continuous longitudinal fiber warp yarn providing tensile strength along the longitudinal axis of the woven tubular sheath and circumferential fiber filling yarn providing tensile strength around the wall of the woven tubular sheath.

Abstract: A cable includes a first wire-shaped metal conductor, a second metal conductor extending a predetermined distance away from and parallel to the first conductor, and a matrix made of a PTC material extending along the conductors, touching the latter and connecting them to one another electrically, with temperature-dependent electrical resistance and a positive temperature coefficient. At least one electrically insulating outer insulation layer surrounds the conductors and the matrix annularly. At least a third and a fourth metal conductor extend a predetermined distance away from and parallel to the first conductor, touch the matrix and are connected electrically by means of the latter to the first conductor, the second, the third and the fourth conductor being made in a wire shape and, considering the cross-section of the cable, being arranged distributed evenly over a circular track surrounding the first conductor.

Abstract: A series of metallic heating elements of large sizes are presented. A conventional metallic tubular heating element is positioned into a hollow metallic profile, wherein additional high temperature resistant components are used in different assemblies, as required. A coiled resistance conductor is positioned within the interstice of two metallic tubes fitted into one another, wherein an electrically insulating powder or grit is used within the interstice, and to embed the coiled resistance conductor, and wherein additional high temperature resistant components are used in different assemblies, as required. The assemblies provide methods to reduce the use of electrically insulating powders and/or thermally conductive powders for large size heating elements, and more particularly for radiant purposes; and components are also presented to improve the emissivity of the outer surface of the radiant heating elements with a colorful look, for surface temperatures operating around and up to 500° C. to 600° C.

Abstract: A method and apparatus for inserting a tubular liner impregnated with a hardening resin into the conduits or pipes to be rehabilitated is disclosed. The apparatus is a tool comprising a cylindrical segment and a conical segment, the cylindrical segment and the conical segment connected together to form a passageway adapted to guide a tubular liner inside a host pipe.

Abstract: A method and apparatus for inserting a tubular liner impregnated with a hardening resin into the conduits or pipes to be rehabilitated is disclosed. The apparatus is a tool comprising a cylindrical segment and a conical segment, the cylindrical segment and the conical segment connected together to form a passageway adapted to guide a tubular liner inside a host pipe.

Abstract: A method of rehabilitating a network of underground water conduits having at least one lateral opening and a membrane for that purpose is disclosed. The method comprising the steps of blocking and sealing the at least one lateral opening with a membrane impregnated with a hardening resin positioned over the at least one lateral opening, and allowing the resin to harden thereby forming a rigid membrane over the at least one lateral opening.

Abstract: A method and apparatus for inserting a tubular liner impregnated with a hardening resin into the conduits or pipes to be rehabilitated is disclosed. The apparatus is a tool comprising a cylindrical segment and a conical segment, the cylindrical segment and the conical segment connected together to form a passageway adapted to guide a tubular liner inside a host pipe.