Abstract: In one aspect the invention provides a magnetic door position detection apparatus adapted to attach to a cabinet interior with a door arranged to transition between an open state where the interior of the cabinet is accessible, and a closed state. The door includes a magnetic field generating structure configured to magnetically engage the door with the cabinet in the closed state. The apparatus provided includes a housing configured to attach to the interior of the cabinet and one or more sensors configured to determine change in the magnetic flux field within the interior of the cabinet induced by motion of the magnetic field generating structure in at least one of three orthogonal axes. The sensor or sensors generate an output signal representing the sensed magnetic field change where the one or more axes is indicative of the cabinet door moved between the closed state and the open state.

Abstract: A method and device is disclosed for inserting a flexible, inflatable and electrically heatable bladder conveying and installing a thermally responsive repair material into the interior of a pipe. The device is portable and can be used to repair pipe accessible from only one location.

Abstract: A method and device is disclosed for inserting a flexible, inflatable and electrically heatable bladder conveying and installing a thermally responsive repair material into the interior of a pipe. The device is portable and can be used to repair pipe accessible from only one location.

Abstract: A method and device is disclosed for inserting a flexible, inflatable and electrically heatable bladder conveying and installing a thermally responsive repair material into the interior of a pipe. The device is portable and can be used to repair pipe accessible from only one location.

Abstract: The apparatus and method for eliminating ground water infiltration while stabilizing the ground and repairing underground pipe/conduit and connections is taught in this art. The steps are to first inject, under pressure, expandable structural foam in the space adjacent and outside the pipe while blocking any infiltration of the foam into the interior of the pipe, conduit or connection. Concurrently or separately the inside diameter of the pipe is receiving a structural repair. The result is stabilized ground, elimination of ground water infiltration and repair of the host pipe conduit or connection. The invention also teaches a novel method of utilizing a tensioned and compressive support on the outer pipe surface.

Abstract: The apparatus and method for eliminating ground water infiltration while stabilizing the ground and repairing underground pipe/conduit and connections is taught in this art. The steps are to first inject, under pressure, expandable structural foam in the space adjacent and outside the pipe while blocking any infiltration of the foam into the interior of the pipe, conduit or connection. Concurrently or separately the inside diameter of the pipe is receiving a structural repair. The result is stabilized ground, elimination of ground water infiltration and repair of the host pipe conduit or connection.

Abstract: A method of repairing an intersection of a first conduit and a second conduit that includes the steps of providing a repair material configured to conform to an intersection of a first conduit and a second conduit and impregnating the repair material with a heat curable resin. The method further includes positioning the repair material at the intersection of the conduits and compressing the repair material against said intersection with a structure having a plurality of electrically conductive fibers. Electric current is applied to the conductive fibers to resistively heat the fibers to facilitate curing of the resin in the repair material.

Abstract: A method of controlling the cure of concrete structures using intralaminar heat generated by applying electrical energy to electrically conductive members disposed within the structures. These conductive members include carbon fibers. The method further incorporates the electrically conductive, members as internal reinforcement in the cured, finished structure reducing or obviating the need for reinforcing steel. The electrically conductive, members are provided in various forms including but not limited to, pliable forms impregnated with a polymer resin matrix capable of being rigidified and completely rigidified forms. The invention may be used in conjunction with heat responsive agents to activate curing. A preferred embodiment of the method according to the invention is a controlled (expedited or heat activated) cure of a concrete structure. Concrete structures containing the electrical heating capability taught herein are also included within the invention.

Abstract: A method of repairing a target section of conduit is provided. First, a repair apparatus is provided with a material structure that engages the conduit. The material structure is defined by a plurality of fibers such that the repair material is flexible and seamless. A curable resin is introduced into the repair material by either injection or infusion depending on the type of resin utilized. Next, the repair material is placed in the conduit in proximity to the engaged aged section or target section of the conduit. The resin in the material structure is then cured, while the repair apparatus is in place adjacent the target or damaged section.

Abstract: The apparatus and method for insitu repair of pipes and conduits of varying diameter is taught by the specification and drawings. The invention utilizes impedance heating techniques and devices that previously been used to heat the contents within pipes and tanks. The invention can be adapted to utilize AC circuit components place either within the interior diameter of the pipe or adjacent to the outer pipe surface. The apparatus and method can include use of thermal couples or other components to monitor temperature and control electric current. The device and method can be variably used with electrical isolation components and techniques.

Abstract: The apparatus and method for manufacturing composite materials utilizing in situ resistive heating of thermal responsive materials such as thermosetting and thermoplastic resin composites by the strategic placement of non metallic conductive fibers. The electrically conductive fibers, which are energized to provide resistive heating, become part of the laminate.

Abstract: The apparatus and method for eliminating ground water infiltration while stabilizing the ground and repairing underground pipe/ conduit and connections is taught in this art. The steps are to first inject, under pressure, expandable structural foam in the space adjacent and outside the pipe while blocking any infiltration of the foam into the interior of the pipe, conduit or connection. Concurrently or separately the inside diameter of the pipe is receiving a structural repair. The result is stabilized ground, elimination of ground water infiltration and repair of the host pipe conduit or connection. The invention also teaches a novel method of utilizing a tensioned and compressive support on the outer pipe surface.

Abstract: The apparatus and method for eliminating ground water infiltration while stabilizing the ground and repairing underground pipe/conduit and connections is taught in this art. The steps are to first inject, under pressure, expandable structural foam in the space adjacent and outside the pipe while blocking any infiltration of the foam into the interior of the pipe, conduit or connection. Concurrently or separately the inside diameter of the pipe is receiving a structural repair. The result is stabilized ground, elimination of ground water infiltration and repair of the host pipe conduit or connection.

Abstract: A composite substrate for a fiber reinforced plastic part comprising a first outer thermoplastic sheet, an intermediate conductive layer or layers, and a second inner thermoplastic sheet. The composite substrate formed by electrically resistively heating the conductive layer or layers to melt the thermoplastic sheets, and applying pressure to consolidate the layers into a rigid substrate. The conductive layer or layers formed of a conductive fiber mat or tape. Additionally, a method is disclosed comprising providing a conductive filament impregnated with a resin; running the conductive filament through an electrical contact, the electrical contact connected to a supply of electric power; and, winding the filament to a mandrel including a second electrical contact connected to said supply of power. Electricity is then induced through the filament from the first contact to the second contact to resistively heat the filament and cure the resin.

Abstract: A unique composite material impregnated with a heat curable resin comprising a layer of conductive fibers and one or more resin carrying layers is utilized to reinforce utility poles by wrapping the material around a portion of the utility pole and causing a current to flow through the conductive fibers to resistively heat the material to the resin. The composite material can also be incorporated into molds to produce cured composite parts. The composite material is also used in the construction of large parts without the need for huge, expensive molds. The conductive fibers in composite parts are oriented in a manner to ensure that the entire part is thoroughly heated during the curing process.