Abstract: A device electrically connects fluid-carrying pipelines, particularly subsea pipelines carrying viscous fluids and/or containing organic residues, allowing for the application of electricity through same, with the purpose of heating those pipelines, so as to prevent or eliminate deposits of organic residues onto the internal walls of the pipelines. The device permits also the utilization of electricity in combination with the simutaneous injection of special fluids. Basically, it includes an electrically conducting pipe (5) which is introduced in a terminal pipe (1) carrying viscous fluid, which is put in contact with the internal steel layer (3) of the terminal pipe (1) by means of electrically conducting fastening element (8).

Abstract: A heating device for a welding jig having two guide arms for welding together plastic pipe comprises two semi-circular electrical heating plates joined at one end by a pivotal or adjustable connection. Both ends of the heating plates have recesses for receiving the two guide arms when the heating device is in its closed position, enclosing the plastic pipes to be welded. The non-pivotally or non-adjustably connected ends of the heating plates are held together by a quick-release closure, such as a toggle catch, when the heating device is in its closed position.

Abstract: Two pieces (12 and 14) of material are releasably bonded together with a thermoplastic adhesive (28) in which a heating element (30) is embedded. After application, the adhesive (28) cures at ambient temperature or at a low elevated temperature produced by passing an electrical current through the heating element (30), to bond the pieces (12 and 14) together. The pieces (12 and 14) are debonded or separated by passing a relatively high electrical power through the heating element (30), to soften or melt the adhesive (28). A preferred adhesive (28) is a cyanoacrylate.

Abstract: Clearance control is provided by circumferentially segmented cooling manifolds having spray bars located radially outside selected components of the stator casing. Cooling air is directed onto stator components and returns immediately through circuitous paths to improve uniformity of cooling. The spray bars extend through limited circumferential angles to limit distortion due to uneven heating.

Abstract: A method of connecting plastic tubes by high-frequency heating comprising preparing an electrode block having at least two electrode members each having annular bores aligned with each other, the electrode block including at least one insulator interposed between the electrode members, the insulator having a bore aligned with those of the electrode members, inserting an end portion of one tube into the one electrode member and an end portion of the other tube into another electrode member so that both tube ends keep contact with each other in the bore of the insulator, and applying a high frequency voltage between the electrode members.

Abstract: A windage shield for use with a pair of annular members oriented in an abutting end-to-end arrangement to define one boundary of a fluid flow path, each of the members having a radially extending flange at their respecting abutting ends for coupling the members to each other. The flanges are coupled by a plurality of circumferentially spaced bolts having a head and a nut which protrude into the fluid flow path. The windage shield comprises an annular ring having a first surface with a plurality of circumferentially spaced arcuate grooves formed therein. Each of the grooves is shaped to receive a preselected number of the bolt heads when the ring is positioned against a corresponding flange. A second surface of the ring opposite the first surface includes a plurality of apertures extending through the ring to the first surface with each of the apertures being located between a respective adjacent pair of the arcuate grooves. Each aperture has a countersunk portion on the second surface.

Abstract: This invention is directed to a novel rotary joint or coupling which is useful for coupling a rotating element to a non-rotating element. More particularly, this invention is directed to a novel rotary joint or coupling which couples a rotating element to a non-rotating element and allows for the passage of a process fluid from the rotating element to the non-rotating element or vice versa, and seals the flowing process fluid from the external environment.

Abstract: The present invention relates to a pipe fitting device which connects pipes that flow a high temperature fluid such as engine exhaust gas. The device includes a first cylindrical block, a second cylindrical block and a follower ring disposed between a ring portion of the first cylindrical block and an edge member of an opening of a second cylindrical block. A spring pushes the follower ring to the second cylindrical block side. Flexible connection sleeves connect the flanges of the first cylindrical block and the second cylindrical block and through holes are drilled into the first and second cylindrical blocks.

Abstract: The end of the uncooled pipe (1) is forked in cross-section, creating an inner and an outer section (5 and 6). The outer section is secure to a cooled pipe (2) and the inner section extends into the cooled pipe with radial and axial play. The annular gap (13) between the inner and outer sections is occupied by a heat-insulating material.

Abstract: A load balanced coolant fitting for allowing an inlet structure and an op support structure to be mounted relative to each other to communicate coolant fluid from the inlet structure to the optic support structure in such a way as to minimize vibration and jitter caused by the flowing of a coolant to be imparted to the optic structure.

Abstract: A method and means for producing mineral wool from coal slag is described wherein molten coal slag is transferred from a coal slag tank in an electrical generation plant. The molten coal slag is transferred to a fiberization apparatus and is heated during the transfer process to maintain the coal slag in a molten state. In the fiberization apparatus, the molten coal slag is subjected to compressed air streams which creates mineral wool fibers which are collected in a collection apparatus.

Abstract: An apparatus and method for attaining fusion temperature at substantially the same time throughout an interface between thermoplastic articles by the controlled application of heat. The method includes providing a sensed temperature signal corresponding with the temperature at the interface, generating a desired temperature signal (such as an analog ramp signal which increases linearly with time) corresponding with a predetermined heat application rate which causes the temperature at substantially all portions of the interface to rise substantially uniformly, providing a heat control signal corresponding with any difference between said signals, and applying heat to the interface at a rate determined by the heat control signal to achieve fusion temperature throughout the interface at the same time.

Abstract: A device for supplying feedwater to, and conveying feedwater from, a shaft tube assembly (20,22) of a machine having a rotary part, which assembly (20,22) has a longitudinal axis about which the assembly (20,22) rotates together with the rotary part, the device being composed of a housing which includes a cylindrical casing (2) having a cylindrical passage extending between its axial ends and a lateral feedwater passage (6) communicating with the cylindrical passage, a conduit member (8) having a second feedwater passage (10) and coupled to one axial end of the casing (2) to form a sealed joint with the casing (2), the conduit member (8) being positioned relative to the casing (2) such that the second feedwater passage (10) communicates with the cylindrical passage, and a closing member (12) coupled to the second axial end of the casing (2) to form a sealed joint with the casing (2), the closing member (12) having a circular opening coaxial with the cylindrical passage of the casing (2 ), the housing being co

Abstract: A fitting that is adapted for use between two adjacent frame members that are mechanically isolated from one another. The fitting has two flanged members one fixed to each frame member and a pressurized liquid coolant flow channel with a pair of bellows units on opposite sides of an intermediate ring that is loosely mounted on the outer surface of a spool attached to one member.

Abstract: A marine drive exhaust system (10, 12, 14) is provided with resilient, shaped rubber O-ring seals (20, 74) between facing surfaces (16, 18) of the exhaust manifold (10) and exhaust elbow (12), and the facing surfaces (70, 72) of the exhaust elbow (12) and the exhaust pipe (14). Each of the shaped O-ring seals has an inner peripheral rib (22, 76) extending peripherally around the exhaust passage and generally conforming to the shape thereof and being spaced laterally between the exhaust passage and the peripheral water passages. Each of the shaped O-ring seals has an outer peripheral rib (28, 82) extending peripherally around the water passages and spaced laterally outward of the inner rib by a gap (30, 84) through which the water passages extend.

Abstract: A flexible joint capable of use with an O'Connor combustor is disclosed. The joint permits at least a 2.degree. flex, allowing for transient misalignments between the combustor and rotary joint, minimizing damage to rotary joint seals.

Abstract: A method for joining together a pair of flanged metal pipe sections at their respective flanges. The sections have heat sensitive material juxtaposed to, in contact with or bonded to the interior thereof. The method includes the step of providing coolant passages, each of the passages being located adjacent to respect of one of the flanges in proximity to the heat sensitive material for heat exchange therewith. The flanges are brought into a welding position and coolant is passed through the passages. The flanges are then welded together and coolant is continuously passed through the passages until the resultant welded flanges have cooled. An apparatus for effecting this method is also provided comprising a coolant passage adjacent to the flange and in heat exchange relationship with the flange. The coolant passage has an inlet for introducing coolant and an outlet for exhausting coolant therefrom.

Abstract: A connector for heatable hoses and a heatable hose assembly for transporting fluids.

Abstract: Tubular components made out of quartz glass or fused quartz, such as tubes, bells, hoods, or pans, with a flange fused or welded onto them are known. To improve cooling such a tubular component, especially the sealing surfaces of the flange, heat conduction and heat radiation in the vicinity of the flange are extensively avoided and, to make it possible to create long-diameter tubular components, the flange is designed hollow and narrow-walled, whereby a coolant, preferably water or a gas, can be conveyed through the hollow space in one preferred embodiment for purposes of interior cooling or the hollow space can be packed with a heat-insulating material.

Abstract: An exhaust gas line for a piston internal combustion engine assembled of several parts consists of an inner pipe line conducting the exhaust gases and of a housing surrounding this pipe line with a spacing. Each of the housings contains a cooling liquid space. The cooling liquid spaces of adjacent housing are connected with each other by a connecting nipple. The connecting nipple, axially displaceable in the recesses, permits an expansion compensation between adjacent housings.

Abstract: A novel bellows expansion joint design and method of preventing stress corrosion cracking incorporates an internal cylindrical weir or sleeve which defines an inner flushing chamber adjacent the expansion bellows wherein connections are provided on the exterior wall of the expansion joint body to allow the admission of a chemical solution or treating fluid directly onto the inside surface of the bellows from an external connection to the expansion joint. In addition, a further connection is provided to a second flushing chamber surrounding the exterior of the bellows so that a similar solution may be admitted and allowed to overflow from an upper portion of the chamber.

Abstract: A connector for supplying cooling fluid to an optical device without inducing jitter in the optical device. An outer housing formed as a T section has one end fixed to the optical device. An elbow disposed in the housing has an end fixed to mechanical ground. Bellows means connecting the housing and elbow and forms fluid tight volumes with the housing on each side of the elbow. Conduit means communication with the volumes fills each of the volumes with fluid flowing through the elbow which eliminates jitter of the optical device due to fluid flow.

Abstract: The invention comprises a coupler used in pairs for joining the ends of two metal members such as pipes by welding. Each coupler has a slot with an external passage to act as a heat barrier to prevent the flow of heat from the welded connection between two couplers to a heat sensitive liner adjacent a surface opposite to that of the weld. The liner is locked into a rebate in the coupler and each coupler is positively aligned with the other.

Abstract: An insert for insulating the area of the coupling two doublewalled tubing segments of an insulated steam injection tubing string. The insert is mounted to overlie both of a pair of adjacent tubing segment end portions radially inwardly thereof. In accordance with one aspect of the invention, the insert has two walls which are spaced apart and connected at their ends to define an annular space therebetween in which thermal insulation may be provided. In accordance with another aspect of the invention, the insert is engaged to one of the end portions and is spaced from the other of the end portions to prevent flowthrough of vapor and to allow vapor to enter between the insert and coupling and condense to provide an insulating medium.

Abstract: Disclosed is a method and apparatus for forming a liquid tight joint between the ends of conductors (pipes) in a piping system for carrying a liquid metal fluid (LiPb). The ends of the pipes are loosely telescoped to allow for misalignment and then initially cooled by coils to solidify the liquid metal fluid in the annulus between the telescoped ends so that the solidified liquid metal itself seals the joint. Suitably located insulation and cooling fins provide thermal equilibrium for the solidified liquid metal in the annulus to maintain the seal. To disconnect the joint, the joint is heated to liquefy the solidified liquid metal in the annulus so that the ends may be pulled apart.

Abstract: A tubular fluid transfer device is operative by itself to seal the end of a conduit. By coupling two of the devices together, a fluid path can be selectively established between two conduits by applying heat energy. The device includes a generally planar surface having a meltable region. The generally planar surface of one device is slidable against the generally planar surface of another one of the devices to bring the meltable regions into registration. The device includes a coupling mechanism which guides the meltable regions into the desired alignment as registration occurs. Furthermore, as the meltable regions register, the coupling mechanism generates forces which bias the meltable regions into intimate contact. The coupling mechanism thereafter releasably retains the devices in this snug interlocked relationship, so that the energy can be applied to jointly heat the meltable regions and melt open a fluid path between the two devices.

Abstract: Disclosed is a method and apparatus for forming a cold weld joint between parts comprising a sleeve (or coupling) to receive the ends of conductors (or pipes). The sleeve is provided with weld pads which when the sleeve cools will engage one of the conductors and be cold welded thereto by the forces of shrink fit. Serrations are provided for axial strength of the joint and to limit the plastic flow of the material of the pads. A second conductor is loosely telescoped in the sleeve by bellows for compensating for any misalignment when the parts are initially brought together. Later the bellows is provided with a backing material to rigidly connect the second conductor to the sleeve.

Abstract: A seal arrangement for a fluid swivel joint such as is commonly used on offshore loading terminals for tankers. The sealed fluid joint includes first and second adjacent joint rings which are rotatable relative to each other about a common central longitudinal axis. The joint rings have a small annular, ring-shaped clearance gap therebetween to allow relative rotational movement, and one of the rings includes an annular seal housing groove facing the clearance gap. An annular seal is positioned in the seal housing groove, and its componets include a pliant annular, sealing member and an adjacent free-floating anti-extrusion ring to prevent the pliant sealing member from being deformed into the clearance gap by a relatively high fluid pressure differential existing across the seal.

Abstract: A flexible exhaust coupling comprising first and second passage elements, the first passage element being fluid-connected to the engine for receiving the exhaust gases to be discharged from an automobile engine through the second passage element, and a ring seal member having a spherical sealing surface and carried by one of the first and second passage elements, the other of the first and second passage elements having a mating spherical surface. The first and second passage elements are resiliently urged by springs in a direction close towards each other to permit the spherical sealing surface to gas-tightly and slidingly contact the mating spherical surface thereby constituting a resiliently yieldable joint between the first and second passage elements, and at least one air channel is defined exteriorly of the ring seal member for the passage of cooling air to forcibly cool the ring seal member.

Abstract: A novel bellows expansion joint design and method of preventing stress corrosion cracking incorporates an internal cylindrical weir or sleeve which defines an inner flushing chamber adjacent the expansion bellows wherein connections are provided on the exterior wall of the expansion joint body to allow the admission of a chemical solution or treating fluid directly onto the inside surface of the bellows from an external connection to the expansion joint. In addition, a further connection is provided to a second flushing chamber surrounding the exterior of the bellows so that a similar solution may be admitted and allowed to overflow from an upper portion of the chamber.

Abstract: The invention relates to a connector for joining the tubular jacket of a heated or cooled pipe to the flange which is welded to the end of a pipe section and has, arranged on a pitch circle, bores for passing fixing bolts through and channels for the heating or cooling medium. The connector has a shape which widens from one of its ends having a circular cross-section to the other end having a contour which is serrated like a star or is wavy.

Abstract: An adapter for isolating vibration and thermal shock incident to the use of water cooled manifolds attached to internal combustion engines comprises a substantially annular resilient flange conformed to receive the water cooling jacket of a manifold in one side thereof and adapted for attachment at the other side to the exhaust ports of an internal combustion engine. The water jacket around the manifold is provided with a sealing peripheral bead which opposes the compression of the hose clamp surrounding the annulus of the adapter. The adapter, furthermore, includes an attachment flange enclosing on the interior thereof an annular stiffener plate through which attachment may be made to the engine. The internal combustion engine includes water cooling cavities around the exhaust ports thereof and contacting surfaces of the adapter are thus constantly cooled, allowing for the use of low temperature materials like neoprene or the like.

Abstract: A system for transferring heat from outgoing domestic waste liquids to incoming water, including a helical tube forming a wall of the system and carrying the incoming water.

Abstract: A joint includes two members with facing surface sections sealed together by a meltable seal material contained within a reservoir between the surface sections. A non-capillary recess in one of the members adjacent one surface section keeps the seal material from flowing out of the reservoir between the members by capillary action when the seal material is melted to form or reform the seal between the members.

Abstract: A device for guiding a rod-shaped member formed of a gluing material which is softened by heat through insertion into a guide channel of a heating apparatus, the device comprising an elastic, flexible cartridge arranged on a heater and secured thereto by a metal sleeve. The metal sleeve extends beyond the heater and surrounds a portion of the cartridge for conducting heat to a section of the cartridge removed from the heater. A small gap is provided between the cartridge and the portion of the metal sleeve surrounding the cartridge to allow for an enlargement in cartridge diameter. The hollow interior of the cartridge is provided with an inwardly directed lip-shaped circumferential edge which cooperates with an inserted gluing material rod to form a seal therebetween. The metal sleeve is preferably a helically coiled metal wire.

Abstract: Freezing of ice on quick connect couplings during transfer of a cryogenic liquid, such as liquid oxygen, from one container to another is prevented by providing a cup-like shield means encircling the body of the coupling. Cold, dry purge gas from the container being filled is introduced into the shield base at a point remote from its open end while the cryogenic liquid is passing through the coupling.

Abstract: The specification discloses a heat exchanger of particular construction and methods of using same, the exchanger having pairs of sealing elements through which a circulating fluid is passed. The circulating fluid can be used for leak detection, cooling, or sterilization. The exchanger has a plurality of coaxially arranged tubes of thermally conductive material, the tubes being spaced apart radially by a pair of end manifolds to form annular fluid flow passages at least one of the manifolds having first and second sealing elements for forming seals between the manifold and the ends of the tubes, circumferential fluid passages being defined between the first and second sealing elements, circulating fluid inlet means for admitting a circulating fluid at first locations in the passages, and circulating fluid outlet means for discharge of said circulating fluid at second locations in said passages, the first and second locations being circumferentially spaced for each passage.

Abstract: A hot melt hose has multiple electrically heated hose sections physically and electrically interconnected end-to-end between a pressurized hot melt source and hot melt dispenser, such as a hand-held gun having a trigger-controlled valve for regulating the flow of hot melt from the gun. Each of the hose sections includes an inner, fluid impervious, chemically inert tube, preferably fabricated of tetrafuoroethlene; an electrically conductive multi-strand braided resistance heating sheath snugly embracing the exterior surface of the inner tube and in intimate heat transfer contact therewith for supplying strength and heat to the tube; and an outer sheath of thermal insulating material for minimizing heat loss. The hose sections are interconnected by a heated joint which comprises electrically conductive hose end fittings electrically connected to the braided sheath and connected by threaded swivel nuts to an electrical insulating fitting.

Abstract: A method of producing similar deep-drawn parts for double-walled structural parts having uniformly spaced walls and edge welding. During every deep-drawing procedure, a respective planar outer plate, which is placed upon the lower part of the tool, as is a filler plate, as well as a preformed or preshaped inner plate, which is placed over the tool punch, are shaped in common, whereby the preformed inner plate and the outer plate receive their final form or shape, and the filler plate is deformed into a preshaped inner plate for a subsequent deep-drawing procedure. The tool for carrying out this method is characterized in that the smallest spacing between the tool punch and the lower part of the tool corresponds to the entire thickness of the two inner plates and one outer plate.

Abstract: An apparatus for heating liquid in a pipe to prevent freezing of the liquid and for de-icing of frozen pipes includes an elongated housing constructed of plastic material and having a central bore and fittings for detachably coupling each end of the housing to the open end of a liquid pipe so that the central bore connects a first liquid pipe to a second liquid pipe. The fittings each comprise a sleeve attachable to the pipe end, a sealing gasket between the end of the housing and an annular flange on the sleeve, and a threaded coupling nut cooperating with external threads on the housing and having a flange engaging the sleeve flange. The housing includes a lateral passageway intermediate its end communicating with the central bore and closed by a sealer valve having an opening with a normally closed penetrable seal of elastomeric material.

Abstract: A flexible joint for connection of two pipes comprises a cup-shaped piece which can be connected to a first pipe, a tubular piece which can be connected to a second pipe, the tubular piece being coaxial with the cuplike piece and being arranged partially inside it, and two flexible spherical rings arranged between the cuplike piece and the tubular piece. The two flexible spherical rings are bolted together and arranged on opposite sides of the center of oscillation, the concave surfaces of the rings being directed towards the center of oscillation and being concentric with respect to this center.

Abstract: A hose connector has a body having a first portion adapted to receive a flexible hydraulic hose and a second portion adatped for connection to a brake actuator. A bore portion of the second body portion is arranged to provide a space large enough to contain at least a major part of any heated brake fluid returning from the actuator upon brake retraction thereby minimizing the amount of heated fluid reaching the hose.

Abstract: A hose joint, for mainly used in a vehicle for taking out negative pressure from the intake manifold, provided with a hose attaching portion, a threadedly attachable portion, and a cooling portion with at least one cooling fin for radiating heat from a heat source such as the intake manifold, so as to protect a hose attached to the hose attaching portion from heat damage. The cooling fin or fins can be variously designed within the purpose of radiating the heat from the heat source not to reach at an unpermissible high temperature to the hose.

Abstract: Apparatus for refining molten metal comprising a vessel, a rotor, and a stator having a graphite/metal joint above the vessel cover wherein said joint is provided with cooling passages and wherein cross-sectional and distance relationship are established between parts of the joint, the joint and the cover, and the cooling passages and the cover.

Abstract: A butt welded tubular structure composed of tubular members of austenite stainless steel including a restraining member providing a cover to the entire outer circumferential surfaces of a welded joint and heat affected zones of the tubular members, the restraining member being formed of a metal or alloy of lower stress corrosion cracking sensitivity than the material of the tubular members and joined at the entire surfaces of opposite end portions thereof to the tubular members by welding, although the restraining member is not joined to the tubular members at portions of the restraining member corresponding to the welded joint and heat affected zones of the tubular members.

Abstract: Heat-recoverable articles carrying a "thermochromic" composition comprising organic materials which melt and decompose to provide a color-change indicating that the articles have been heated to a certain temperature, e.g. to melt a sealant carried on the surface of the article which is to contact a substrate around which the article is to be shrunk. Mixtures of relatively simple compounds may be used to graduate the color change, and means are described for preventing reversion to the original color on long-term exposure to moisture.

Abstract: A pressure-tight, rotary pipe coupling joins rotating, high temperature fluid transmission lines. Pressure seals of the coupling are maintained at a temperature lower than that of the high temperature or primary transmitted fluid by thermally insulating the seals from the high temperature fluid and by pumping a fluid coolant through annular cavities located adjacent the seals. A balanced pressure structure substantially eliminates thrust forces between the coupling members and reduces rotating friction.

Abstract: The invention is a composite pipe coupling having a corrosion resistant liner which seals pipes to be coupled by utilization of a heat recoverable metallic material and having a pair of complementary heat recoverable metallic tensile rings and an external support structure which supplement the tensile strength of said liner, and of the overall coupling.

Abstract: A releasable connection comprising a first member removably inserted in a second member with space between adjacent opposing surfaces of the members; a solid mass of a material, in the space between the members, which firmly joins the members together; said solid material having substantial compressive, tensile and shear strength, and being convertible by heat at a sufficiently high temperature to a physical state in which it has much lower compressive, tensile and shear strength; and, apparatus associated with at least one of the members for supplying heat to the material.The material, for example, may be ice, a low melting metal or a polymeric material.The releasable connection can be used onshore or offshore. It can be used to releasably secure an offshore structure to a seafloor, such as in the artic, using ice as the material.

Abstract: A filter assembly for extruded polymer melts is described which comprises a filter having retained between inlet and outlet manifolds with a contact pressure that can be varied. A primary seal device between the manifold and the housing is located in a rabbet in either the housing or the manifold at the contact plane. This seal responds to pressure from the polymer melt flow by deforming and increasing the contact pressure between the manifold and the housing. Thus the greater the pressure at which the melt is extruded, the tighter is the seal.