Abstract: The present invention discloses a glide tube ring for tube-in-tube systems, pipe conduits and the like. The glide ring tube according to the invention is provided with axially spaced glides running parallel to each other whose material has the lowest possible friction coefficient, especially a plastic, preferably a fiberglass-reinforced polyethylene, polyamide or the like, in which the glide tube ring is attached to the central tube forming a closed ring that centers this tube in the protecting tube, pipe conduit or the like.

Abstract: An assembly and method for supporting a plurality of individually insulated pipes or conduits inside a vacuum jacket where the insulated pipes are positioned or fixed relative to one another and the inside surface of the vacuum jacket.

Abstract: Forming a novel double containment polymeric piping assembly by interfitting slidably interfittable polymeric inner pipe components, including a first induction responsive layer therebetween, and slidably interfittable polymeric outer pipe components, preferably including a second induction responsive layer therebetween, to form an inner connection and an outer connection, while causing the inner connection to be axially offset from the outer connection, applying an electrical induction force around the periphery of the outer pipe components, axially aligned with the inner connection but not with said outer connection, and thereby fusing the inner pipe components and the first polymeric layer together, and moving the components relative to said electrical induction force, axially away from the inner connection, and axially aligned with the outer connection, applying an inductive force around the periphery of the outer pipe components, and thereby fusing the outer pipe components and the second polymeric layer

Abstract: A casing spacer includes first and second elongated, steel shell members comprised of stainless steel or high strength steel with corrosion inhibiting coatings, with each shell member having a semi-circular cross section for engaging and enclosing a carrier pipe within an outer casing. Attached to the outer surface of each of the first and second shell members are one or more adjustable risers for engaging the inner surface of the casing in maintaining the pipe, or pipes, in fixed position within the casing. Each riser includes a runner on its distal end to facilitate positioning of the spacer within the casing. The casing spacer's first and second shell members are securely coupled together by way of flange and nut and bolt combinations along one edge and a hook and eye arrangement along a second, opposed edge.

Abstract: A thermal guard for pipes to protect personnel from hot or cold pipes in refineries, chemical plants and other places processing hot or cold fluids. The guard is made from metal and contains no insulation so that the pipes are readily visible for observing leaks and can be readily repaired. The guard is fabricated from a few easily fabricated and assembled parts which can be attached to pipes of various sizes.

Abstract: For the transportation of a fluid such as a methanol or glycol there is provided a multi-conduit umbilical (20) having a conduit which comprises a hose (10,21,22) having a lining layer (11) of polyethylene, for example cross-linked polyethylene, arranged to restrain permeation of fluid from the bore of the hose (10,21,22).

Abstract: Transfer line for cryogenic fluid comprising a transfer conduit (1) for cryogenic fluid and a conduit (3) for cooling fluid surrounded by a metallic shield (4) coupled thermally to the cooling conduit (3). The metal shield (4) is a thin strip wound in unsecured manner about the conduits (1, 3) and locally connected to the cooling conduit (3) by resilient clips (5) or by a layer (6) of connecting material. The metallic strip has a thickness no greater than 0.1 mm and can be of aluminum.

Abstract: A piping assembly has spacers which are positioned on a pipe and spaced apart one from another along a length of the pipe. Each of the spacers extends from a perimeter of the pipe to a spacer perimeter surface which is interrupted by at least one gap defined by two spacer edges which extend towards the pipe perimeter from the spacer perimeter surface in a direction transverse to the spacer perimeter surface. A sleeve having apertures therethrough which form a mesh is positioned on and circumscribes the perimeter surfaces of at least two spacers and has edge portions bent at positions to extend to the spacer edges so that the sleeve is held in position on the spacers.

Abstract: A multiaxial pipe system is provided particularly for use in underground fuel transfer between a fuel storage tank and one or more dispensing pumps. The pipe system includes a primary fuel flow line and a vapor recovery line mounted within a common outer containment conduit. Adapter fittings are provided on the ends of the fuel flow and vapor recovery lines for quick and easy connection to biaxial pipe fittings located respectively at the fuel storage tank and at each dispensing pump.

Abstract: A double-containment pipe fitting and system for joining sections of double-containment pipe includes an outer containment housing, an inner carrier housing, and a plurality of restraining devices. The containment housing has a plurality of open ends. Each open end is constructed to securely connect to an open end of a containment pipe. the carrier housing has a plulrality of open ends constructed and arranged for positioning within the containment housing. Each open end of the carrier housing is constructed to securely connect to an open end of a carrier pipe. One restraining device is provided for each open end of the containment housing. The restraining device securely fastens the carrier housing to the containment housing and thereby restrains expansion and contraction of the carrier pipe and containment pipe. The carrier pipe and containment pipe are otherwise unrestrained against expansion and contraction.

Abstract: A flexible, multiple passage conduit assembly for use in fiber optic systems comprises an outer elongated housing formed from circumferentially corrugated flexible plastic conduit of cylindrical configuration. A separate rigid end fitting member of generally cylindrical configuration is joined to each end of the conduit to close the ends and allow for joining the assembly to associated multiple passage conduits. A plurality of lengths of hollow flexible plastic tubing are located within the conduit housing to extend the length thereof. The lengths of tubing terminate in open ends adjacent the end fittings. The open ends of the tubing are connected to the end fitting members by connections which permit relative axial movement between the lengths of tubing and at least one of the end fitting members.

Abstract: A flexible transfer line for delivering coolant from a storage dewar to cool superconducting circuitry is provided with a delivery capillary coupled to the storage dewar, this capillary being thermally isolated from ambient temperatures. The transfer line has an outer flexible support coaxial with the delivery capillary, and an inner flexible shield between the delivery capillary and the outer flexible support. Heat in the shield is continuously removed to thereby provide the thermal isolation of the delivery capillary. The thermal isolation allows a low-flow rate of coolant through the delivery capillary since inefficiences due to thermal conduction and radiation are substantially eliminated.

Abstract: In a coaxial piping system for the transport of toxic and hazardous gases having an inner conduit wherein hazardouses gases are transported therethrough and having a spacer helically wound about the inner conduit within a volume between the inner conduit and an outer conduit.

Abstract: Multi-lumen tube arrangement for use in a sliding-seal-free centrifuge comprising a plurality of equilength individual tubes (12, 14, 36, 38, 40, 42) which after a twisting about the longitudinal axis of the tube arrangement (10) are each held fixed free of tension at their ends (16-18).

Abstract: An assembly for the coupling of a multi-duct conduit system for sealing the outer and inner ducts of adjacent conduit sections in end to end relationship. There is provided a primary coupling housing which includes preferably a premolded body portion which is insertible into the outer most housing of a ducted system. The body system in the body portion comprises first and second half body portions. Each first and second half body portion is adapted to receive a plurality of ducts into bores in the body housing so that a first plurality of ducts enters and is insertible into the body portion at a first end and the second adjoining plurality of duct members are insertible into the body portion on the second end, the first and second portions of ducts being slidably engaged into the body portion and meeting substantially at a center point within the body portion, for defining a continuous pathway within the ducts for housing transmission lines therewithin.

Abstract: A conduit liner assembly for use in the installation of a series of fiber optics cables in an existing conduit. The conduit liner assembly includes a plurality of individual chambered inserts each having a central chamber and connected one to another in bundled engagement such that each of the inserts is longitudinally moveable individually with respect to each of the inserts adjacent thereto. Also provided is a method for installation of a conduit liner assembly in an existing conduit including the steps of connecting a group of separate tubular inserts together into a loosely held bundle wherein the separate tubular inserts are longitudinally moveable with respect to one another when connected. The bundle of inserts is next pulled through an existing conduit at a suitable access point in the conduit. The bundle is separated at the access point into separate tubular inserts. A pulling force is the applied to each of the separate tubular inserts.

Abstract: A double-walled chimney comprising inner and outer concentric pipes providing an annular insulating space between them is made up of coaxial end-to-end inner pipes surrounded by concentric, coaxial outer pipes. The inner pipes meet at a junction transverse or radial to the basic axis and are interconnected by an inner, annular ring. The outer pipes stop axially short of meeting so that an annular gap exists that exposes or opens to the junction of the inner pipes. Circumferentially spaced apart spacers are secured to the inner ring and project outwardly as well as axially in opposite directions to engage the outer pipes to keep the latter spaced outwardly from the inner pipes and further to stabilize the outer pipes axially. An outer band connects the outer pipes together and functions also to close the gap between the outer pipes and thus to complete the insulating space at the outer pipe gap.

Abstract: A pipe cluster unit comprises a plurality of plastic pipes arranged parallel to one another and being in mutual engagement with one another along longitudinal lines of contact to form a pipe cluster and a cover layer bonded to external surface portions of the pipes. The cover layer connects adjoining pipes to one another by bridging the adjoining pipes at locations spaced from respective lines of contact between adjoining pipes.

Abstract: A seal between an object such as a cable, cable splice or branch-off, and a surface such as a recoverable sleeve by means of a flexible envelope containing a void-filling composition. The void-filling composition undergoes a change from a low viscosity on installation, which allows the flexible envelope to conform to the object, to a high viscosity after installation, which gives mechanical strength to the seal. Deformation of the flexible envelope on installation may be brought about by installation of the recoverable sleeve or other surrounding surface.

Abstract: An intravascular tube assembly is disclosed which facilitates the administration of drugs and fluids to a patient. The invention is especially useful during emergency surgery, or in other contexts where several medications need to be administered simultaneously, and wherein it is necessary to provide a complicated assortment of infusion lines. The assembly comprises a plurality of tubes for delivering the fluids, the tubes having indicia disposed at intervals along their length. In the preferred embodiment, the indicia are printed on the tubes at intervals of about six inches, and are printed three times at each location along the tube, around its circumference. Alternatively, the indicia can be printed in a spiral fashion from one end of the tube to the other. The assembly also includes at least one generally flat separator having a plurality of spaced-apart holes, the diameter of the holes being slightly larger than the diameter of the tubes.

Abstract: A low heat transfer suspension system for supporting from a warmer annularly shaped outer vessel an enclosed cold annularly shaped inner vessel is disclosed. The system comprises a truss comprised of a material with low coefficient of thermal conduction attached at a plurality of positions about an outer circumference of the inner vessel at approximately the midplane of the inner vessel and attached at a plurality of positions about an inner circumference of the outer vessel such circumference being substantially in a plane which is substantially parallel to but axially offset from the midplane of the inner vessel.

Abstract: A crush and abrasion resistant, sealed, impervious, flexible protective jacket assembly for oil and gas wells containing a plurality of electrical and/or fluid conductors that are oriented in linear, spaced, parallel relation. A pair of elongated protective metal sheets define elongated conductor grooves. The metal sheets are joined by welding to define a plurality of elongated chambers containing one or more of the conductors. The chambers are sealed from the atmosphere and may be filled with a non-gaseous dielectric material to prevent the development of corona discharge that might cause deterioration of the protective jacket assembly. The configuration of the sheets of protective material is such that the development of corona discharge is resisted. A pair of metal longitudinal structural elements are attached at opposed sides of the protective jacket assembly and prevent damage thereto by abrasion, crushing, bending, etc.

Abstract: A pipe cluster unit comprises a plurality of plastic pipes arranged parallel to one another and being in mutual engagement with one another along longitudinal lines of contact to form a pipe cluster and a cover layer bonded to external surface portions of the pipes. The cover layer connects adjoining pipes to one another by bridging the adjoining pipes at locations spaced from respective lines of contact between adjoining pipes.

Abstract: A cryostat for use in magnets for NMR medical diagnostic imaging includes inner and outer vessels suspended by sets of at least three low thermal conductivity ties. The positioning of the tie anchoring points, particularly on the interior vessel, are selected in accordance with the present invention to preclude increased stresses in the supporting ties that occur as a result of thermal contraction. This configuration is particularly advantageous in that it permits the utilization of ties having smaller cross-sectional areas than would otherwise be required. The reduced cross-sectional area requirement is also therefore seen to increase the thermal isolation of the interior cryostat vessel. Cryostat vessels may be nested within one another.

Abstract: A cryostat which is particularly useful for containing superconducting windings for a magnet to provide high strength magnetic fields for NMR imaging comprises a set of nested annular vessels in a suspension system which permits transport of the cryostat and magnet assembly with vacuum conditions intact. In particular, sets of transverse ties linking certain vessels to the next adjacent outer vessel are employed to prevent transverse motion of the cryostat assembly. Furthermore, during transport, a system of pins is employed to prevent axial motion, while at the same time minimizing thermal conductivity. During transport, the inner annular assemblies are locked in a fixed axial position which permits transport of the cryostat in a vertical position.

Abstract: A device for protecting and securing small diameter tubular members along a pipe string in a wellbore is disclosed. The protector is designed to fit about the joints of connecting pipe sections and comprises a sleeve assembly capable of being arranged and locked about a pipe joint. The sleeve assembly preferably comprises a plurality of symmetrical, most preferably semi-cylindrical, sleeve members having interfitting longitudinal end portions, preferably held by hinge pins in circular arrangement about a pipe joint. At least one longitudinal channel is formed, preferably with a pair of parallel, longitudinal ridges on the interior surface of the sleeve assembly to receive and hold therein a small diameter tubular member. The sleeve assembly is further characterized by shoulder members spaced sufficiently far apart to bracket the greater diameter pipe joint to prevent longitudinal displacement of the sleeve assembly with relation to the pipe string and joint.

Abstract: An applicator is provided for coating the uncovered end portions or stubs of pipe sections after they have been welded together. A belt is maintained in tension out of contact with the pipe until the pipe stubs are welded together and coating operations are to begin. The belt is then wrapped onto the pipes forming an annular cavity about the welded stubs. Chain reinforcing mesh is also applied to the exterior of the belt for support. An expanding foam which sets into a hard coating is then injected into the cavity. Once the foam hardens and fills the cavity, the belt and reinforcement are unwrapped from the coated joint and moved away from the pipe.

Abstract: The present invention relates to a heat exchanger tube support for supporting a plurality of heat exchanger tubes in a conduit of a heat exchanger. The heat exchanger tube support includes three identical elements each having a flattened W-shaped configuration defined by a central projection and two diverging leg sections. A channel is defined in the area between each leg section and the projection. The elements are secured together with a leg section of each element being welded to a leg section of each adjacent element and with the projections extending radially outward. The elements enclose an interior area through which a central heat exchanger tube passes. Six outer heat exchage tubes are supported in a radial array on the heat exchanger tube support within each channel. The leg sections of each element extend to the inside wall of the conduit to space the heat exchanger tubes from the inside wall.

Abstract: An enclosure construction for pneumatic tubes and power and control cables installed overhead for remote visual auto teller banking systems which is inexpensive and attractive and readily installed. The enclosure includes plastic half sections which are snap-engaged along laterally opposite longitudinal joints having weather seals therein. One of the plastic half sections is fixed internally to a semicircular clamping member which cooperates with a second clamping member. The clamping members are clamped to the pneumatic tube before one of the plastic enclosure members is assembled with the other.

Abstract: A non-tracking elongated evacuated tube solar energy collector employing compound parabolic reflectors. An energy absorber is positioned at the focal points of the parabolas and is supported by one or more support members along its length. Each support member is a length of resilient wire in the form of a coil encircling the energy absorber with arms extending from each side of the coil. Each arm bears against the inner walls of the evacuated tube at two spaced-apart contact regions.

Abstract: A new method for transporting low temperature heat long distances consists of a system of high pressure air with a high specific heat in a low heat loss and low cost non-metallic heat pipe that is coilable for plowing into the earth. The hot air is used for space heating or for heating hot water heating systems or for process heat.The purpose of the invention is to reduce cost and save fossil fuel. High pressure air as opposed to hot water or steam for moving heat energy ecologically sound. Remote geothermal hot water wells can be economically moved several miles or hundreds of miles to communities for space heating. Remote waste heat sources at electrical generating plants and other fossil fuel burning heat system can be transported long distances for building use.

Abstract: Flexible production tubing is wound about a reel for easy and convenient transport to and from a well site. A submersible pump is attached directly to the end of the flexible tubing and is lowered through the well casing to a producing formation. Insertion and withdrawal of the flexible tubing is accomplished with a hydraulically powered drive sprocket assembly mounted above the well head equipment. The flexible tubing is reinforced by striker plate assemblies which are engaged by the teeth of the drive sprocket, thereby providing positive traction for insertion and withdrawal without damaging the flexible core. The flexible production tubing includes a high strength injection core, a tubular production conduit embedded within the core, and a series of striker plate assemblies partially embedded within the core.

Abstract: A hose assembly is described for use in the transference of cooled liquified gas to a vessel, in a system that requires the flexible hose to lie in the water. The hose assembly includes a flexible inner hose forming a central passage through which liquified gas can pass towards the vessel and having walls that are permeable to the bleeding of vapor therethrough, to avoid damage by expanding liquid droplets that find their way into the inner hose wall. The assembly also includes an outer hose with substantially impermeable walls, the outer hose surrounding the inner hose and leaving an annular passage between them which can receive the vapor permeating the inner hose. The annular passage also can be used to carry vapor from the vessel back to a shore-based installation which reliquifies it.

Abstract: The modular conduit unit formed from at least four conduits secured together in spaced relationship by means of a plurality of spaced star-shaped spacer elements. The star-shaped spacer elements are each formed with four equally spaced hollow projections that terminate in end walls and have curved side walls. The curved side walls of adjacent projections merge to form outer walls of the element that are in the form of cylindrical segments. An integral reinforcing member interconnects said outer walls at points spaced from said end walls and a line of weakness is found in each of said end walls and extends substantially longitudinally of the cylindrical segments. The line of weakness facilitates breaking of the star-shaped member for replacement of a conduit.

Abstract: In a dual conduit drill pipe section having concentric inner and outer tubes, a plurality of centering lugs are provided which are disposed between the inner and outer tubes and include bearing surfaces which are adapted to reduce the friction and wear associated with the movement of the inner tube with respect to the outer tube. The inner tube is secured to the outer tube at one point along each pipe section by a heat meltable adhesive which bonds an anchor ring which is secured to the inner tube to a shoulder defined in the inner surface of the outer tube.

Abstract: A cable structure comprising a cable provided with a cable sheath in the form of a flexible corrugated or undulated tube. Between the cable and the sheath there are arranged guide bodies at predetermined locations. The guide bodies are fixed at the inside of the sheath and are provided with domed or arched guide surfaces at the side of the cable, in order to guide the cable both in a straight and bent condition.

Abstract: A system for supporting a plurality of conduits above another in parallel, spaced-apart relationship including a base unit for supporting the bottom conduit, the base unit comprising a base and a U-shaped member having an open end for receiving the bottom conduit and supporting same, and an intermediate unit including first and second U-shaped members, the open ends of which extend in opposite directions whereby an intermediate unit can be pushed down onto one conduit and positioned to support another conduit thereabove. By continuing this process, multiple conduits can be supported and spaced one above another. Each unit includes matching interlocking means attached to opposite sides thereof whereby adjacent units may be interconnected to support multiple columns of conduits with a desired horizontal spacing.

Abstract: A cryogenic fluid transfer line is provided which comprises an interior conduit for passage therethrough of cryogenic fluid, an exterior conduit concentrically spaced about the interior conduit and defining the exterior of the fluid transfer line, an annular heat transfer shield generally concentric with and interjacent to the interior and exterior conduits and including at least one longitudinally extending resilient arcuate member with a longitudinally extending generally arcuate hooking edge, at least one longitudinally extending resilient arcuate member with a longitudinally extending generally arcuate catching edge, where the hooking and catching edge members are interlockingly engageable with each other when the member including the hooking edge is flexed to a smaller arcuate radius, positioned with its hooking edge inboard of the catching edge and then permitted to relax, each set of engaged hooking and catching edges defining a hollow generally cylindrical nest having a substantially closed curved sur

Abstract: A plastic well pipe comprising an outer wall, an inner wall, and channels formed by longitudinally extending partitions being integral with the walls, the outer wall being provided with bores opening into the channels, while at certain points the inner wall has been removed for recovering liquid from the channels, which liquid flows into the channels through the bores.

Abstract: Disclosed are saddles for retaining a number of ducts in rectangular bundles. Each saddle in cross section is four-sided. Each side is concave and of the same radius as the ducts being bundled.

Abstract: A spacing element for spacing a pipe from a protective pipe outwardly surrounding the latter, has an annular body including a plurality of segments adapted to be placed on an outer surface of the pipe and each having a plurality of projections provided with sliding surfaces and adapted to abut against the protective pipe. The spacing element further includes a plurality of electrically insulating wedge-shaped connecting portions for connecting the segments with one another. The connecting portions may be formed as trough-shaped members embracing trough-shaped flanges of the segments. The connecting portions may also be formed as wedge members insertable into bores of a projection of one of the segments engaging a recess of an adjacent segment, or fixable to an outer surface of such projection. Additional connecting members such as electrically insulating pins, straps and strings may be provided for connecting the segments with one another.

Abstract: A collar for fitting onto a pipe, particularly for the purpose of inserting said pipe into another without damaging the lagging on the pipe of smaller diameter. Said collar consists of a flexible band with meshing teeth, which is wrapped about a pipe and its ends. This collar is secured by bringing said teeth into contact and thus closing the band around said pipe.

Abstract: Fluid-carrying tubes for a heat exchanger are provided with internal longitudinal fins formed separately from the tube itself. One form utilizes individual elongated V-shaped strips biased radially outwardly by an annular sheet metal spring, with the tips of the fins brazed to the inner surface of the tube wall. Second and third embodiments utilize a one-piece corrugated sheet metal cylinder rather than individual strips, but with adjacent fins being almost completely severed from each other to provide sharp edge contact between the tips of the fins and the tube wall for optimum brazing. Either the fins or tube inner wall is clad with a lower-melting point material which permits furnace brazing of the fin tips to the tube wall. All three forms have longitudinally spaced holes and slots to enhance heat exchange by inducing transverse fluid flow through the fins and to allow liquid levels to equalize.

Abstract: In a container assembly for an exhaust emission control catalyst for internal combustion engines, of the kind comprising a cylindrical substrate body carrying the catalyst and mounted within a sheet metal casing with the interposition of a compressible cushioning layer of refractory material, an open-seam sheet metal shroud of variable circumference is used to enclose the compressible layer and to compress it prior to, or simultaneously with, endwise insertion into the casing. The shroud or the casing may have elongated ribs pressed in it, the ribs tapering at their ends to facilitate entry.

Abstract: A support arrangement is used for elastically mounting a monolithic ceramic honeycomb structure within a housing in an exhaust gas pipe and consists of a holding angle and a molded part formed of a soft, flexible material. The holding angle is rigidly secured to the inner surface of the housing with one of its legs extending along the wall of the housing and the other extending radially inwardly from the inner housing surface. The molded part is rigidly secured to the inner end of the other leg of the holding angle and extends from its point of rigid securement in generally the same direction as but spaced inwardly from the one leg of the holding angle. At its end opposite the end secured to the holding angle, the molded part is bent radially outwardly into sliding contact with the inwardly facing surface of the holding angle. The combination of the holding angle and molded part form a cavity which may be filled with a heat-resistant material.

Abstract: Spacer for concentrically disposed tube systems where a temperature drop exists between adjacent tubes. This may consist, for example, of a superconducting electric cable or alternatively of a tube system for carrying heated liquid or gaseous media. The concentric tubes are spaced by a winder which touches the surfaces of adjacent tubes at particular points and which consists of ribbons of insulating material disposed adjacent to each other. The individual ribbons are so formed and so arranged that they touch adjacent tube surfaces either at only individual points or at lines.

Abstract: High voltage electrical cable comprising an inner elongated conductive member, a corrugated metallic tubular member positioned about such inner member, and a plurality of nonconductive spacers each positioned along the longitudinal axis of the electrical cable and extending between said members through a nonconductive environment comprising, for example, a gaseous, foam or liquid insulator. To avoid premature insulation breakdown or sparkover in the vicinity of the spacers, such spacers are so configurated and positioned that their end portions coming into engagement with the corrugations of the surrounding tubular member follow the profile of the engaged corrugations so as to extend into the corrugation troughs thereof.

Abstract: A catalytic converter of cassette type having a monolithic honeycomb structure of catalyst-coated ceramic body which is resiliently supported within an outer cylindrical metal shell. The shell includes first and second circumferential portions of an equal diameter which are at opposite axial ends thereof, and a third circumferential portion located therebetween and which has a greater outer diameter than the first and second portions. Thus bevelled areas are defined between the first and the third and between the second and the third circumferential portions. The converter is rigidly mounted in a gas passage defined by a pair of tubular members which are connected in tandem with an internal combustion engine. One of the tubular members has an inwardly extending annular rib at a given distance from the end thereof.

Abstract: A monolithic catalyst structure for purifying exhaust gases particularly in motor vehicles in which the monolithic catalyst is connected with tubularly shaped metallic support members by way of a sintered intermediate layer and in which the support members carry the monolithic catalyst inside of a tubularly shaped catalyst housing through which flow the exhaust gases.

Abstract: An assembly for the coupling of a multi-duct conduit system for sealing the outer and inner ducts of adjacent conduit sections in end to end relationship. There is provided a primary coupling housing which includes preferably a premolded body portion which is insertible into the outer most housing of a ducted system. The body system in the body portion comprises first and second half body portions. Each first and second half body portion is adapted to receive a plurality of ducts into bores in the body housing so that a first plurality of ducts enters and is insertible into the body portion at a first end and the second adjoining plurality of duct members are insertible into the body portion on the second end, the first and second portions of ducts being slidably engaged into the body portion and meeting substantially at a center point within the body portion, for defining a continuous pathway within the ducts for housing transmission lines therewithin.