Abstract: An in situ method for repairing a base flange of a wellhead. At least one layer of a polymerizable composite material is applied to a damaged surface, an elastic seal is placed on the layer of composite material, and a reinforcing collar is pressed against the seal on the surface of the flange covered with the composite material. An arrangement of an in situ repair of a base flange of a wellhead includes at least one layer of a polymerized composite material on a damaged surface, an elastic seal on the composite material, and a reinforcing collar pressing the seal against the damaged surface.

Abstract: A model-based egress support system (10) employs models to generate an optimal egress route for occupants in a region. The system includes an egress controller (16) that is connected to receive detection data. The egress controller (16) executes an optimization algorithm (22) to select an egress route based on model-based egress estimates generated by an egress prediction model (18) in response to the detection data.

Abstract: A pre-stressed concrete pipe is taught that incorporates a cylinder (20), an annular ring (34) and an annular offset member (40) welded together. A seal band (44) stretches over the annular offset member and the assembled annular ring is welded within a first end (22) of the metallic cylinder. A strip of pressure sensitive tape (54) seals the internal interface. An O-ring (52) is positioned around the annular ring during joint attachment of a pipeline. The cylinder second end (24) utilizes a hat member (56) and a resilient seal band (44a) stretched over the hat member with the assembled hat member welded within the second end of the cylinder. A strip of pressure sensitive tape (54) seals this interface. A film layer of release agent (64) is adhered to the inside of the metallic cylinder where a concrete tube (68) is cast within the cylinder.

Abstract: A connector to connect a fluid path to a fuel tank includes a main portion made of a synthetic resin through which a gas produced from fuel hardly passes, and a shell formed outside the main portion and made of a synthetic resin through which the gas passes easier than the main portion and which can be melt-bonded to the outer surface of a fuel tank. The main portion includes a flange part in the outer periphery. The shell has a wall section for a melt-bonding portion which extends around from the top surface side of the flange part and covers the bottom side of the flange part. The undersurface of the flange part is provided with an inclination having the peripheral edge side of the flange part upside thereof.

Abstract: A flange (1) made of composite material, a method of making the flange (1) and a mandrel (3) upon which the flange (1) is formed are provided. The flange (1) is a curved hollow member that has a substantially triangular cross-section. The method of making the flange (1) includes applying composite material to external surfaces of a curved mandrel (3). The mandrel (3) is curved and comprises a solid triangular cross-section. The method also includes curing the composite material to produce a flange (1) that is a curved hollow member that is substantially triangular in cross-section.

Abstract: An interface is provided between a stiff piece (1) and a composite material (2), the composite material (2) including fibres (3), the stiff piece (1) including two or more vanes (4a, 4b, . . . ) protruding from a surface of the stiff piece (1). The vanes (4) include two or more lateral surfaces (41, 42, 43, 44), in which one or more fibres (3) of the composite material (2) are arranged for passing through one or more funnel-shaped throats (45) formed between lateral surfaces (41a, 43a, 41b, 43b, . . . ) of adjacent vanes (4a, 4b, . . . ). A fixing matrix material (7) is arranged around the one or more fibres (3), at least in or near the funnel-shaped throats (45). The vanes (4) are arranged for exerting counteracting transversal and axial forces on the fibres (3) and the fixing matrix material (7) when the interface is subject to forces.

Abstract: A unit element of undersea pipe, in particular for providing a bottom-to-surface connection, constituted by an assembly of two coaxial pipe elements of the PiP type (1) presenting an inner pipe element (2) and an outer pipe element (3) coaxial thereabout with an annular space (41) between the pipes, preferably including a thermally insulating material (42) in the annular space, and including at each end a junction piece (6, 6a-6b) in the form of a steel forging for connecting together two of the unit elements of axial pipe (1), the junction forgings (6) being welded to the ends of both of the inner and outer pipes, the unit elements being characterized in that the inner pipe element (2) comprises in its main portion an inner tube (21) of metal presenting thickness that is small relative to the thickness of the ends of the inner pipes that are welded to the junction forgings (6), the thickness of the inner tube being less than 50% the thickness of the ends of the inner pipe, the inner tube (2) being covered in

Abstract: A composite tube assembly and a method of making the same are provided. The composite tube assembly includes a composite tube and a fitting penetrating the composite tube. The fitting includes a reduced diameter section surrounded by a reduced diameter tube portion of the tube. A bolstering structure surrounds this reduced diameter tube portion. The method includes inserting the fitting into the composite tube, heating the tube portion surrounding the fitting to soften the same, radially compressing the tube portion onto the fitting reduced diameter section, and providing a bolstering structure surrounding the compressed tube portion.

Abstract: A plastic coupling for joining two metal pipe sections end-to-end to form a pipe assembly. A first plastic spigot cuff is formed along the periphery of the end of the first pipe and a mating second plastic bell cuff is formed along the periphery of the end of the second pipe, such that the first and second cuffs form a bell and spigot joint with the first, spigot cuff inserted into and joined to the second, bell cuff.

Abstract: A composite reinforced line pipe is manufactured by aligning first and second pipe segments each having a composite reinforcement wrapped circumferentially about a core, attaching the line pipes at a cut-back portion of their exposed core, wrapping a joint tape circumferentially about the cut-back portion, wrapping a resin reinforcement tape circumferentially about the joint tape, and curing the joint tape and resin reinforcement tape.

Abstract: A coupling for joining metal pipes or pipe sections end-to-end to form a pipe assembly. A plastic cuff is formed on one of the pipe ends and a mating, second plastic cuff is formed on the other pipe end. In one embodiment, a wire hoop is mounted over each pipe end, the hoops are rotatable around the associated pipe ends to align the hoops, and bolt assemblies spanning the two hoops are used to tighten the hoops axially, to thereby clamp the pipe ends and compress the cuffs between the pipe ends and provide a leak-proof joint. The cuffs are selected from configurations including tongue-and-groove and bell-and-spigot. The cuffs can be formed on the pipe ends in the shop, then the pre-cuffed pipe sections can be readily assembled into stable, leak-proof, corrosion-resistant lengths of pipe in the field.

Abstract: A connector for joining a segment of composite pipe is disclosed. The connector includes an end connector having at least one fiber trap on its outer surface thereof. The end connector is attached to a liner portion of the segment of composite pipe. Fibers forming an outer surface of the segment of composite pipe are wound around the at least one trap under tension. The connector includes a binder which impregnates the fibers. The tension is maintained on the fibers in the trap during cure of the binder.

Abstract: An aerosol solvent weld cement composition for joining ends of plastic pipe. The composition contains at least one polymer capable of welding the plastic pipes to each other, at least one solvent for the polymer, and at least one propellant for the polymer/solvent solution. The composition is maintained under pressure greater than atmospheric pressure in an aerosol container. A female omnidirectional valve is disclosed for use in the aerosol container. This valve comprises a valve body having an omnidirectional attachment which contains a check valve container made up of a constricted lower end, a top surface, a lateral opening, and a check ball for opening and closing passageways. This valve allows the solvent weld cement composition to be applied to pipes from any angle.

Abstract: A tubular resin connection structure is disclosed that includes a resin connector and a resin tube. The resin tube is fixedly coupled to one of the first and second ends of the resin connector in a fluid-tight manner by a weld disposed between the resin connector and the resin tube. Preferably, one end of the resin tube is inserted into a molding die and a portion of the resin connector is welded to the resin tube by overmolding the resin of the resin connector during injection molding. In other words, the weld between the resin connector and the resin tube is formed overmolding a resin of the resin connector over the resin tube to simultaneously the mold the resin connector and form the weld between the resin connector and the resin tube.

Abstract: Disclosed is a PVC pipe cement composition that comprises a polymeric material of a methyl methacrylate homopolymer or copolymer, a styrene-acrylonitrile polymer, and a rubber grafted with at least a methacrylic acid ester of a C1 to C8 alkanol; and at least about 10% by weight solvent.

Abstract: A coupling assembly for use in a loading adapter of a gasoline tanker trailer. The coupling includes an aluminum coupling body and a wear resistant bronze sleeve. The wear resistant bronze sleeve provides a durable surface for receiving latches. The sleeve does not bond to the coupling body, but rather is constrained thereto by physical interference.

Abstract: The present device relates to an inlet of a blow gun, and more particularly to a metal inlet combined in a plastic blow gun by injection molding. The metal inlet has an internal screw hole, and a polygonal outside surface or a ratchet-striated outside surface, to provide a high torque-resistant construction when integrally molded with the blow gun. One or more groove rings are formed in the outside surface of the metal inlet, the side walls of the groove ring form retainers to prevent it from moving out axially under a large axial force. The plastic blow gun integrated with the metal inlet has an excellent seal efficiency without any leakage, and the service life is increased greatly.