Abstract: For the purpose of repairing supply lines such as a wastewater pipe, a plastic hose has been developed which, in the clear state, has a diameter which is the same size as, or larger than, the diameter of the pipe in which it is to be inserted. This plastic hose is used to fix optical or electric cables against the inner wall of the pipe. For this purpose, the plastic hose is introduced into the waste-water pipe in a collapsed state, together with the cable, and is released when the desired positioning has been reached. The collapsed plastic hose will then regain its original shape and thereby fix the cable against the inner wall of the waste-water pipe.

Abstract: A filler-tube assembly for a fuel tank has a filler tube having an upper end formed by a tubular inner wall defining a fill passage and having an outer surface and a concentric outer wall fixed relative to and defining with the inner wall an annular and upwardly open space and having an inner surface and an end surface. A cap adapted to fit over the outer end has a tubular extension fittable in the space and having inner and outer surfaces and an end surface bridging the respective inner and outer surfaces. A seal ring in the space is engaged between one of the surfaces of the cap and one of the surfaces of the filler tube.

Abstract: A method of decreasing the viscosity of crude oil including the steps of injecting into the crude oil CO2 alone or CO2 mixed with N at an elevated pressure of about 600 psi to about 1800 psi and intemently mixing the CO2, or CO2 mixed with N, with the crude oil at the elevated pressure.

Abstract: A conduit for supplying a fluid and damping pressure pulsations in the fluid, the conduit having an outer pipe and an inner pipe housed inside the outer pipe, and the outer pipe having a small-diameter intermediate portion cooperating in fluidtight manner with the inner pipe; the inner pipe therefore defines with the outer pipe a first annular chamber and a second annular chamber located on opposite sides of the intermediate portion, and has a number of intermediate holes connecting the inner chamber of the inner pipe to the first and second annular chamber.

Abstract: A pipe mechanism for an exhaust gas recirculation system includes a joint pipe connected to an exhaust pipe, an inner tube through which flows exhaust gas, and an outer tube. The inner tube has an upstream end and a downstream end, with the downstream end being located in the intake pipe. The outer tube has an upstream end connected with the joint pipe and a downstream end attached on the outer surface of the inner tube. The outer tube is located around the inner tube with a predetermined clearance between the inner and outer tubes.

Abstract: Improved thermoplastic liner containing metal pipelines in which the liners consist essentially of polyamide 11 or polyamide 12 as well as methods for their preparation and use are disclosed.

Abstract: An improved safety hose apparatus includes an inner hose having threaded connectors attached rotatably at each end thereof. An inner hose is disposed about the outer hose. The inner hose is alternatable between longitudinally expanded and contracted conditions. The outer hose includes a pair of resiliently expandable end coupling portions. Each end portion is selectively expanded to releasably grip the peripheral surface of a respective threaded connector. This seals the end of the apparatus so that water leaking through a rupture in the inner hose is retained within the outer hose.

Abstract: A double wall safety hose delivers water from a standard threaded hose bib to an appliance or plumbing fixture. The apparatus includes an outer and an inner hose that extends through the outer hose. The inner hose is communicably attached at each end to respective threaded connector. A closure in the form of a ferrule or bushing surrounds and sealably interengages each end of the inner hose. A corresponding end of the outer hose sealably interengages an enlarged outer surface of the ferrule. This seals each end of the safety hose apparatus so that water leaking through a rupture in the inner hose is retained within the outer hose. A drain port attached to the outer hose discharges water that has leaked from the inner hose to a drain line.

Abstract: The present invention generally relates to a device and a method for supplying conditioned air for heating and/or cooling to an aircraft. More specifically, the present invention provides a hose in a container and a retractor. The retractor may engage the hose and pull the hose from the container. The container may deliver the hose to the aircraft via the retractor. In addition, the retractor may also retract the hose into the container when the hose is not needed. Further, the retractor may be released from the hose and container, allowing the hose to be pulled manually from the container.

Abstract: A device for tightening a spout, attached to a previously installed angled pipe having an outside radius of curvature, in a position relative to a stop member having an opening through which at least a length of the pipe extends, comprising, at least one sleeve, comprises: at least a first leg and a second leg which meet at a juncture which defines an angle substantially corresponding to the angled pipe, wherein the first and second legs have a combined total length, wherein the first leg has a leg length and is substantially rigid along at least a portion of the leg length, has an inside radius of curvature that is approximately equal to or greater than the radius of curvature of the angled pipe, and wherein the sleeve has a slit, along the entire total length of the first and second legs, to allow the sleeve to be pressed onto and at least partially about the angled pipe; and a method for using the same.

Abstract: A fiber reinforced plastic pipe is provided to prevent it from being damaged and make full use of its practical performance when the fiber reinforced plastic pipe, reduced in thickness and increased in diameter by pultrusion process, is reduced in the circumferential direction and inserted into a metal pipe. The fiber reinforced plastic pipe, reduced in thickness and increased in diameter by pultrusion process, includes a fiber bundle spun and aligned in the longitudinal direction, and circumferential reinforced fiber sheet provided at least on one of the outer and inner surface layers. The circumferential reinforced fiber sheet is inserted into the metal pipe to form a power transmission shaft such as an intermediate shaft for use with a propeller shaft or a drive shaft.

Abstract: A catalyst container of a catalytic converter is of a double-pipe structure wherein an outer periphery of an inner pipe and an inner periphery of an outer pipe are fittingly superposed on each other. The catalyst container has a catalyst installing portion, tapered cone portions extending from the catalyst installing portion with a gradually decreasing diameter, and straight connecting portions extending from smallest-diameter regions of the cone portions to the ends to be connected with connecting pipes upstream and downstream of the catalytic converter. Holes maybe formed in the cone portions of one of the inner or outer pipes to permit fluids to be displaced from the space therebetween. Such a catalyst container has sufficient rigidity and radiated noise suppression properties and thus can be reduced in weight by being thinned.

Abstract: A coagulating/condensing device including a spiral coagulating pipe composed of a spiral mixing pipe formed by inner and outer pipes of a multiple pipe with an inner pipe having an opening thereof formed in the outer pipe to face downstream to floc the solids by causing liquids at different electric potentials separately supplied from the inner and outer pipes to contact with each other.

Abstract: The invention relates to a pipeline 1 moving effluents at seabed level and comprising an inner shell 3 and at least one outer shell 2 which is separated from the inner shell by an annular space 7 receiving an insulating layer 4.

Abstract: A power transmission shaft to be used mainly in vehicles comprises metal joint elements and a metal pipe connected to each other. A fiber reinforced plastic pipe having a large flexural modulus of elasticity is inserted into the metal pipe, thus forming a composite FRP shaft having flexural rigidity sufficient to serve as a power transmission shaft.

Abstract: A polymeric hose assembly including a male hose inserted within a female hose connects an air cleaner to an internal combustion engine. An elastomeric seal including a plurality of bellows is bonded around the circumference of the exterior surfaces of the female hose and the male hose at bonding points. The plurality of bellows expand to allow for the expansion of the hose assembly to accommodate for engine movement and vibrations.

Abstract: This invention relates to a co-tube assembly for a heating and air conditioning system. The co-tube assembly comprises a connector an inner tube and an outer tube. The connector including a first opening, a second opening and a third opening. The inner tube extends through the first opening and the second opening of the connector. The inner tube has a first portion axially outwardly of the first opening of the connector and a second portion axially outwardly of the second opening of the connector. The outer tube is disposed over the first portion of said inner tube and inserted into said first opening of the connector.

Abstract: A double wall safety hose delivers water from a standard threaded hose bib to an appliance or plumbing fixture. The apparatus includes an outer and an inner hose that extends through the outer hose. The inner hose is communicably attached at each end to respective threaded connector. A closure in the form of a ferrule or bushing surrounds and sealably interengages each end of the inner hose. A corresponding end of the outer hose sealably interengages an enlarged outer surface of the ferrule. This seals each end of the safety hose apparatus so that water leaking through a rupture in the inner hose is retained within the outer hose. A drain port attached to the outer hose discharges water that has leaked from the inner hose to a drain line.

Abstract: A glass lined container such as a vessel or conduit for liquid or gaseous material is disclosed consisting of a strong outer shell and an inner glass liner. The glass liner is spaced uniformly from the outer shell and a molten material which will expand when solidified is poured into the space between the outer shell and glass liner and solidified to place the glass liner under high compression.

Abstract: A pipe bend for a pipeline for transporting abrasive materials, includes a pair of coupling collars having an outer ring, which has an outer circumferential anchoring groove, and an inner ring secured in the outer ring against axial displacement and made of a more wear-resistant material than the outer ring. Extending between the coupling collars is an arcuate outer pipe portion which is welded at both its ends to the outer rings of the coupling collars, and has a greater inner diameter than the outer rings. Extending at a radial distance to the outer pipe portion between the inner rings of the coupling collars is an arcuate inner pipe portion made of more wear-resistant material than the outer pipe portion and having opposite ends of an inner cross section in coaxial alignment to an inner cross section of the inner rings, for radial support upon the outer pipe portion.

Abstract: An improved fluid flow system for enhancing fluid flow through an opening. The first embodiment uses a first extension member for extending an opening through a perpendicular surface and a second extension member with a generally converging introductory section secured in a sealed overlapping relationship to the distal end of the first extension member. A second embodiment uses a pair of conduits of equal cross-section with a bulbous section therebetween with one of the conduits inserted into the bulbous section. A third embodiment with unequal cross-sections with the smaller diameter conduit inserted into the larger diameter conduit and sealed thereto for forming a continuous conduit.

Abstract: A pipe connected to a stage serving as a movable member arranged in a vacuum chamber has a double pipe structure constituted by a resin inner pipe and a resin outer pipe which covers the inner pipe including its surrounding space. The space between the inner pipe and the outer pipe is connected to a vacuum pump serving as an exhaust means. The space in the pipe is kept in vacuum by the vacuum pump.

Abstract: A flexible secondarily-contained pipe of unitary or one-piece construction characterized in that it comprises the following combination of features: an inner supply pipe (1); an inner barrier layer (6) which forms an internal surface of the supply pipe (1) and which is formed from a first polymeric plastics material, an outer containment pipe (2); a plurality of passages associated with the secondary containment pipe, said passages being adapted to receive any fluid which has leaked from the inner supply pipe and to convey said fluid to a remote leak detector.

Abstract: An exemplary embodiment of the invention is a kit for installing an underground piping system. The kit includes a protective conduit having flexible piping contained therein and a plurality of sealing members. The installer positions the protective conduit and flexible piping as a single unit thereby facilitating installation.

Abstract: Flexible liners for relining fluid transport pipelines contain at least one integral conduit which has no fluid communication with either the interior of the lining of the relined pipeline, or with the inside wall of the pipeline itself. The integral but substantially fluid-isolated conduit may serve to carry telecommunications or other cables, thus providing an economical means of introducing telecommunications through existing pipeline infrastructure without necessitating abandonment of the fluid transport capabilities of the pipeline.

Abstract: A polymeric hose assembly including a male hose inserted within a female hose connects an air cleaner to an internal combustion engine. An elastomeric seal including a plurality of bellows is bonded around the circumference of the exterior surfaces of the female hose and the male hose at bonding points. The plurality of bellows expand to allow for the expansion of the hose assembly to accommodate for engine movement and vibrations.

Abstract: An expansion tube joint of the present invention comprises a first cylindrical body, a second cylindrical body inserted along an axis of the first cylindrical body, a seal member mounted between the first and second cylindrical bodies closer to an insertion port of the first cylindrical body, a lock mechanism provided at a position deeper than the seal member for restricting a relative movement range along the axis of the first and second cylindrical bodies, and a coming-out preventing member for preventing the seal member from coming out from the insertion port of the first cylindrical body, wherein after a member constituting the lock mechanism is mounted, the seal member can be mounted.

Abstract: The present invention is a safety hose system for use in delivering water from a water supply source to an inlet connector of a washing machine. In one embodiment, the system comprises a first connector engageable with the inlet connector of the washer machine and a second connector engageable with the water supply source. The system further comprises a first hose having first and seconds end connected to the first and second connectors, respectively. The system further comprises a second hose disposed concentrically and sealed about the first hose and extending from the first connector to the second connector. The system further comprises a sealing material. The first and second ends of the second hose are molded to the first and second connector, respectively, by the sealing material to form an unitary one piece structure. The system may further comprise an over-spill portion formed by said second hose being disposed about the first hose.

Abstract: A flexible, open-ended conduit for an electrical harness. The conduit has a central tubular section and a grommet at each end. The grommets are each of a size and shape to fit in a panel opening of similar size and shape. One of the panel openings is non-circular and the corresponding non-circular grommet has to be turned to fit in the opening. Turning the grommet causes the conduit to twist. To prevent kinking or buckling of the conduit due to twisting, the conduit has a screw-like helical formation. Instead of kinking or buckling, the conduit when twisted merely elongates or contracts.

Abstract: A high-pressure fuel injection pipe for a diesel engine includes a fuel pipe main body with opposed first and second ends. First and second fastening nuts are mounted over the first and second ends. A first unitary outer pipe is mounted over a portion of the fuel pipe main body and is mounted to the first fastening nut. A second unitary outer pipe is mounted over a portion of the fuel pipe main body and has an end mounted to the second fastening nut. The end of the second outer pipe is spaced from the second fastening nut is expanded circumferentially and telescoped over a portion of the first outer pipe. A sealing ring is sealingly engaged between the first and second outer pipes.

Abstract: An apparatus comprises an elongate pipe (1) for use in the transfer of fluids susceptible to form deposits on cooling such as wax deposits in oil, and a container (12) comprising a reusable heat source comprising a supercooled solution, e.g., of aqueous sodium acetate. The container (12) is in heat conducting contact with a surface of the (1), preferably on at least one surface of the container. The deposit may be removed from inside the pipe (1) by locating in heat conducting relation to the pipe a reusable heat source comprising a supercooled solution, and activating crystallization in the solution liberating heat which causes at least some of the deposit to melt and/or dissolve.

Abstract: A conduit, in particular for sanitary and/or heating installations, comprising a pipe for conveying a fluid or for accommodating supply lines such as electric power supply lines or fluid-conducting pipes, is characterized in that the pipe is connected to a mounting material strip for fastening the pipe to a surface, and object or the like, the mounting material strip projecting laterally from the pipe and extending along the pipe.

Abstract: A pipe for the ducting of gaseous fluids, notably in cars, characterised in that it includes a porous interior tube (1), permeable to gaseous fluids and likely to lessen noise transmission, and an exterior tube (2), which is essentially rigid and forms an envelope distant from the interior tube, in a material essentially non-permeable to gaseous fluids.

Abstract: A flue ducting for atmospheric boilers is disclosed and comprises two coaxial generally tubular ducts 10, 11, and a generally undulating linear spacer 12 between said ducts. Linear features are provided on the mutually facing surfaces of the ducts, the features being shaped to engage the undulating spacer 12. One end of the annular space between the ducts 10, 11 is closed.

Abstract: A valve jacket is provided to surround a valve and contain any liquid that may leak from the valve as a part of a secondary containment system of the type found a gasoline service stations. The valve jacket is provided as a hollow body with a pair of openings through which a pair of primary pipelines associated with the valve can extend. One of the two openings is sized large enough that the jacket can be slid over the valve. The two openings are sealed to a pair of secondary conduits associated with the primary pipelines. A reservoir can be provided in the jacket to collect any liquid and a sensor can be provided in the reservoir to detect the presence of liquid in the reservoir. Preferably, a removable and sealable cap is provided to allow access to the valve for operation.

Abstract: A flexible conduit includes a corrugated tubular metal bellows having a minimum inner diameter; cylindrical end fittings secured to the bellows; a metal hose disposed coaxially within the bellows and having a maximum outer diameter which is less than the minimum inner diameter of the bellows; and a free annular cylindrical space situated between the bellows and the metal hose. The cylindrical space has an outer diameter equaling the minimum inner diameter of the bellows and an inner diameter equaling the maximum outer diameter of the metal hose. The conduit further has a hollow cylindrical knit wire element positioned in the cylindrical space. The knit wire element radially fully occupies the cylindrical space without projecting radially therefrom.

Abstract: A device for use in transporting particulate materials including: a conduit adapted for transporting particulate material from the first end to the second end of the conduit via an interior hollow chamber; a gas impermeable outer wall; a gas permeable inner wall; a compressed gas inlet nozzle which traverses the outer wall; a gas distribution chamber situated between the outer wall and the inner wall; and a gas pressure source attached to the gas inlet nozzle which conveys gas to the gas distribution chamber and through the gas permeable inner wall.

Abstract: The invention relates to a sliding device for two-cylinder pumps for liquids, especially designed for concrete pumps. The sliding device (20) has a pivot pipe (16) which is bent and has substantially a C-shape. The pivot pipe is fixedly connected, at its upper end, to an extension pipe (42) protruding over a back wall (24) of a material feeding bin and connected, at its end opposite the pivot pipe, to a discharge conduit through a pipe rotating connection. The pivot pipe is placed in such a way that it is able to pivot about the axis of the extension pipe so that its other end is connected alternatively to the openings of the discharge cylinder (10). In order to ensure reliable operation in spite of frictional wear in the extension pipe (42), the invention provides for a support pipe (84) which coaxially overlaps the extension pipe (42), is fixedly connected to the upper end of the pivot pipe and extends over least on one part of the extension pipe (42).

Abstract: Prefabricated insulated pipe sections are constructed of an inner pipe surrounded by a concentrically-positioned outer pipe. End portions of the inner and outer pipes are joined with bellow members so that an annular space is defined. A portion of the inner pipe is wrapped with layers of insulation material with inert insulating granules positioned between the layers. The annular space is partially evacuated to below atmospheric pressure. Multiple pipe sections may be joined by their inner pipes through brazing or other known methods. The joints and neighboring bellow members on abutting pipe sections are covered by clam shells that are sealed and filled with insulation.

Abstract: A pipe assembly includes an inner pipe and an outer laminated pipe disposed around the inner pipe for use in conveying exhaust gases from an internal combustion engine. The outer pipe is formed from two or more laminated layers to reduce noise emission. The outer pipe surrounds the inner pipe to protect the inner pipe, and muffle the inner pipe, while the inner pipe provides support for the outer pipe, either consistently contacting the outer pipe at the upstream inlet portion, or contacting the outer pipe at three areas spaced from each other on the outer pipe at the downstream outlet portion. The three contacting areas at the downstream outlet portion create an air-filled space at least partially separating the inner pipe and the outer laminated pipe. The air-filled space insulates the inner pipe so that exhaust gases moving through the inner pipe do not cool significantly as a result of heat dissipating by conduction or convection to the outer pipe.

Abstract: A fluid delivery system for delivering a process fluid to a vacuum processing system includes a secondary containment line surrounding a process fluid line. A purge gas flows through the secondary containment line and around the process fluid line in order to flow away any leaked process fluid. Alternatively, a heated fluid flows through the secondary containment line forming a heat trace around the process fluid line to heat the process fluid line and the process fluid by means of convection, which provides for precise uniformity of temperature throughout the length of the secondary containment line. The heated fluid loses heat to the ambient environment creating a temperature gradient through which the process fluid flows. The secondary containment line may have a heating element along its length for adding heat to the heated fluid to change the temperature gradient.

Abstract: A process for producing pipes illustrated with foams comprises [a] providing, between an inner carrier pipe and an outer pipe arranged parallel thereto, a holder which is provided with at least one aperture and is mounted so that it can be moved axially and positions the carrier pipe in the outer pipe and [b] introducing into the vacant space between the two pipes, via the aperture (s) in the holder, a mixture for the preparation of foams, where [b1)] during the introduction of the mixture, the holder moves in an axial direction with respect to the outer pipe and the carrier pipe, then [c] after the mixture is charged, it is reacted to give the foam and [d)] the holder and, if desired, the outer pipe are removed.

Abstract: A heat exchanger tube is composed of a metal outer tube having an inner profile and a metal inner tube having an outer profile, wherein the profiles are in an undercut engagement with each other so that the inner and outer tubes are in rigid abutment and at least one longitudinal channel, formed between the outer tube and the inner tube is provided for leak detection and the heat exchanger tube may be manufactured by designing the profile so that the inner and outer tubes may be screwed or slid into one another to provide a rigidly abutting configuration.

Abstract: A dual walled exhaust assembly (28) is provided for an ion implantation system for connecting system components residing at differing voltage potentials. The assembly comprises a disposable corrugated inner tube (84) connected between inner mounting portions of a first end mount and a second end mount, and a permanent outer tube (82) connected between outer mounting portions of the first and second end mounts. The inner and outer tubes (84, 82) are constructed from polytetrafluoroethylene (PTFE), or some similar dielectric material with appropriate non-flammable properties. The inner corrugated surface of the tube (84) has a plurality of surfaces which are pitched downwardly toward an axis (87) of the inner tube to prevent contaminant accumulation. The corrugated surface also reduces the risk of arcing between the system components residing at differing voltage levels by effectively increasing the length of the ground path that a leakage current would need to traverse across the length of the tube.

Abstract: A submerged, valve assembly for controlling flow of fluid (e.g. ballast water) to and from a reservoir (e.g. a ballast tank of a ship. The valve assembly is comprised of a valve which is controlled by a hydraulic valve actuator. A fluid-tight housing encloses the actuator so that any leaking hydraulic fluid will be contained within the housing and will not pollute the surrounding fluid in the tank. The assembly includes a means for detecting any hydraulic fluid which may leak into the housing.

Abstract: An electrical cable has helically attached bristles for supporting the electrical cable when pulled through a string of coiled tubing to connect to an electrical submersible pump. The electrical cable and helically attached bristles have a circumscribed diameter greater than the inner diameter of the coiled tubing. The bristles deflect in a direction opposite the direction of pulling the electrical cable so that they grip the wall of the coiled tubing. The bristles apply a resistive frictional force to the wall of the coiled tubing, thereby transferring the weight of the electrical cable to the coiled tubing.

Abstract: A decorative pipe protector that can be positioned around a copper water supply pipe to both provide a decorative appearance and protect the copper water supply pipe from corrosion. The pipe protector includes a trim tube extending axially between a first end and a second end. The trim tube includes an inner surface having an inner diameter slightly larger than the outer diameter of the water supply pipe such that the trim tube can be slid onto the water supply pipe. The second end of the trim tube includes an attachment portion formed along its inner surface having a reduced diameter approximately equal to the outer diameter of the water supply pipe. The attachment portion of the trim tube is sweat soldered to the outer diameter of the water supply pipe to provide a liquid-tight seal between the two components. The second end of the trim tube includes external threads that receive a water shut-off valve.

Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

Abstract: A tube assembly for an auxiliary heating and air conditioning system includes an inner tube extending longitudinally, an outer tube extending longitudinally and disposed over the inner tube, the outer tube including a plurality of ribs for locating the inner tube approximately concentric to the outer tube, at least one connector tube, and at least one connector interconnecting the at least one connector tube and the outer tube to allow fluid flow between the inner tube and the outer tube.

Abstract: A rotary fluid coupler includes a first fluid conduit, a second fluid conduit in fluid communication with the first fluid conduit and rotatable relative to the first fluid conduit, and a first fluid conduit/second fluid conduit seal at a joint between the first fluid conduit and the second fluid conduit. A return fluid conduit has an inlet end that receives fluid leaked through the first fluid conduit/second fluid conduit seal, and a return/joint seal that seals against leakage from the return fluid conduit to an external environment. A fluid-pressure biasing source is in communication with the return fluid conduit to move fluid away from the inlet end through the return fluid conduit, and back to a fluid source.