Abstract: Robotic tools, methods, and systems for repairing pipes in-situ are described. A robotic tool includes a body with an annular, cylindrical configuration with a first end and a second end opposite the first end, the body having an inner surface defining an axis; a printing arm attached to the inner surface of the robotic body using a track, the printing arm circumferentially movable along the inner surface of the body; a printing head attached to the printing arm, the printing head movable radially along the printing arm and axially relative to the printing arm; and a plurality of legs positioned at axial intervals around the robotic body, each leg pivotably attached to the robotic body at either the first end or the second end of the body and pivotable between an open position and a closed position.

Abstract: A tubular connection includes a tubular joint including a pin with a first pin thread having a first pitch and a second pin thread having a second pitch, and also includes a connector that includes a box with a first box thread having the first pitch and a second box thread having the second pitch. The connection also includes an elastomeric seal ring comprised of a material that swells in the presence of hydrocarbons. Upon make-up of the connection, the first pin thread engages with the first box thread, the second pin thread engages with the second box thread, and the elastomeric seal ring is disposed around the tubular joint between the first pin thread and the second pin thread and forms a metal-to-elastomer seal between the tubular joint and the connector.

Abstract: A hammer union includes a male sub, a threaded female sub, a threaded union nut disposed around abutting ends of the threaded female sub and the male sub, the abutting ends of the threaded female sub and the male sub include contact surfaces perpendicular to a longitudinal axis of the hammer union, and an outermost diameter of the perpendicular contact surfaces and a minor thread diameter of the female sub are equidistant from a longitudinal axis of the hammer union. A method of assembling a hammer union includes inserting a plurality of load segments between a threaded union nut and a male sub, threadedly engaging internal threads of the threaded union nut with external threads of a female sub, and engaging flat contact surfaces of abutting ends of the male sub and the female sub.

Abstract: A feedwater sparger repair assembly includes a cover plate having a partial cylindrical shape and having a nozzle opening and a pair of bolt openings extending through the cover plate. A nozzle is attached to the cover plate and surrounds the nozzle opening. A pair of T-bolts extend through a respective one of the pair of bolt openings and each include a shank having a threaded portion extending from an exterior side of the cover plate and a partial cylindrical head portion disposed at an end of the shank on an interior side of the cover plate. A pair of nuts are engaged with the threaded portion of the pair of T-bolts. The feedwater sparger repair assembly is adapted to be mounted to an opening that is cut into a core spray pipe in order to repair/replace a sparger that becomes cracked.

Abstract: A device is for operation on a pressurized bolt connection between a first flanged tubular and a second flanged tubular. The device has a first clamping member with a first contact portion adapted to bear against the flange of the first tubular, a second clamping member with a second contact portion adapted to bear against the flange of the second tubular, and a connection arrangement for pulling the first clamping member and second clamping member together. The first contact portion and the second contact portion are adapted to bear at an inner part of the flanges between the bolts of the bolt connection and the body of the two tubulars.

Abstract: A turbo housing manifold includes a base plate defining a first opening and a housing conduit portion connected with the base plate and defining a second opening distal from the first opening. The housing conduit can include a first extending portion proximate to the base plate and extending axially away from the base plate, and a second extending portion connected with the first extending portion and distal from the base plate wherein an inner surface of the second extending portion transitions as the second extending portion extends away from the base plate.

Abstract: A pipe repair tool and method of use, for use with a coupler of the type having a first end and a second end, the first end having an outwardly projecting flange, such that the repair tool includes a cuff portion having a leading edge and a trailing edge, the cuff engaging a sleeve portion of the coupler with the leading edge of the cuff facing the flange of the first end of the coupler. The tool may include an outwardly projecting first leading ear having a pry surface near the leading edge of the cuff, the pry surface facing the trailing edge of the cuff such that force applied to the pry surface urges the leading edge of the tool toward the flange of the first end of the coupler.

Abstract: An overshot assembly for operative coupling to a wireline and a head assembly within a drilling system. The overshot assembly has a proximal body portion, a distal body portion, and a spindle received within the distal body portion. The distal body portion is moveable axially relative to the spindle to effect movement of a latching assembly about and between a deployed position in which the latching assembly extends radially outwardly from the distal body portion and a retracted position in which the latching assembly is received within the distal body portion.

Abstract: This disclosure provides systems for using failure mode ranking in an asset management system to generate asset maintenance outputs. Operational data, failure mode models, and configuration data for an asset, such as a complex electromechanical system, are related to failure prevention analytics configurations through failure mode rankings to enable the asset management system to reduce a future ranking of potential failure modes by changing the present configuration of the asset to include a recommended failure prevention analytics configuration.

Abstract: A nozzle repair method and a nuclear reactor vessel include: removing a trepanning portion (208) as a connection portion with respect to an in-core instrumentation cylinder (204) in a groove-welding portion (206); removing the in-core instrumentation cylinder (204) from a lower end plate (66); forming a plug attachment opening (211) by removing the groove-welding portion (206); applying a pressing load to the lower end plate (66) by attaching a plug (212) to the plug attachment opening (211); and welding and fixing the plug (212) attached to the plug attachment opening (211). Accordingly, since a repair is easily performed, it is possible to improve the workability and to decrease a repair cost.

Abstract: Illustrative Embodiments may provide for an apparatus and method for fitting a first tube to a second tube. The apparatus may have a first section and a second section. The first section and the second section may engage each other to form a spreine. Each section may engage a sleeve. The spreine may encircle the sleeve encircling the first tube. The spreine may include a slider that may receive a force that may move the spreine and the sleeve, engaged within the spreine, and fit the first tube to the second tube. Fitting the first tube to the second tube may include engaging the sleeve with a first O-ring that may encircle a first ferrule in the first tube, and the sleeve simultaneously engaging a second O-ring encircling a second ferrule in a second tube.

Abstract: A pipe system for a fluid, in particular a gas of an intake system (10) or a turbocharger of an internal combustion engine is disclosed. Also disclosed is a method and an apparatus for connecting at least one duct part (12) of a pipe system (10). The pipe system (10) has at least one blow-molded duct part (12) made of plastic and at least one fitting (18) for connecting the at least one blow-molded duct part (12) with another part (20) of the pipe system (10). The fitting (18) is inserted tight in the at least one blow-molded duct part (12). The at least one blow-molded duct part (12) is shrinked onto the at least one fitting (18).

Abstract: Apparatus and method for clamping a flanged joint, comprising a clamp having first and second clamp devices applied to circumferentially separate portions of the flanges, each device having a foot to engage an outer face of a flange, and a force driver adapted to press the flanges together from opposite sides of the flanged connection. The clamping devices are circumferentially spaced apart on the flange, and a foot portion is adapted to engage the outer face of each flange circumferentially between the bolts, to allow transmission of forces to the flanges without applying forces to the bolts, or the nuts or other fixings attached thereto. The clamping force is applied not through the existing bolts passing through the flanges, but through the clamping device of the invention.

Abstract: A clamp assembly for temporarily applying compressive force to a flange connection assembly, such as a bolted pipe flange. Frame members are pivotally attached to interconnecting linkage members to form an elongate assembly having joinable ends. When installed around the circumference of a flange connection assembly, interchangeable cuff members removably attached to the frame members apply compressive forces to a flange connection assembly in order to facilitate a fluid-pressure seal.

Abstract: The present invention relates to sealing means made of a plastically deformable material for mechanical sealing of hollow hoses (2) of elastic material by means of an appliance having at least two jaws, at least one of which is movable towards and away from the other and which, when moving towards each other, crimp the sealing means against the hose (2) for contamination-tight sealing of the same, the sealing means (20) comprises at least one sealing member (4, 4?; 44, 44?; 64, 64?; 74, 74?; 84), which has two opposite ends and an opening (40, 40?) that extends between said ends to allow the at least one sealing member to be slipped onto the hose (2) to be sealed. The present invention also relates to a kit comprising a sealing means and an appliance for sealing of hollow hoses and to a method for mechanical sealing of hollow hoses.

Abstract: An apparatus for repairing a sheath of a pipe includes a sleeve adapted to surround the pipe, at least two circumferential seals between the surface of the pipe and a pressure source for forcing a sealing solution against the surface of the pipe between the two circumferential seals. The apparatus is arranged such that the sleeve is spaced from the outer sheath of the pipe to form a sealed annulus and a sealing solution is introduced into the sealed annulus.

Abstract: The pipe repair coupling includes a sleeve and two seal retainers that secure to the sleeve ends to retain corresponding seals therein. The repair coupling is installed about a damaged section of pipe without need for substantial displacement of either portion of the broken pipe or need to dress or otherwise modify the broken ends of the pipe. A seal retainer and seal are placed over each portion of the broken pipe, and the sleeve is slipped over one of the broken pipe portions. The two pipe portions are aligned with one another, and the sleeve is generally centered over the break. The two seal retainers are then locked into place on the sleeve ends by splines inserted into cooperating circumferential grooves in the sleeve ends and retainers, capturing the seals between the seal retainers and corresponding seats and distending the seals to bear against the broken pipe therein.

Abstract: A hose clamp for repairing high pressure hydraulic hoses comprises a first clamp portion mated to a second clamp portion around a hose. The first and second clamp portions each comprise a semi-cylindrical channel extending longitudinally along an inner surface of the clamp. The hose is received within the channel and a plurality of fasteners releasably affix the clamp portions together. A plurality of barbs extending circumferentially around the channel compress the hose to minimize leakage from the hose.

Abstract: A mending apparatus or kink mender (100) is utilized to un-kink a soft wall hose section (102), without cutting or splicing the hose. The apparatus (100) is preferably a molded part that encompasses the hose section (102) around the exterior wall (110) by clamping around the outer surface of the hose section (102). This action causes the outside of the hose section (102) to again reform into a true cylinder, which in turn will remove a kink from a kink area (114) and open the interior (104) of the hose (102) so as to allow fluid to again flow through the hose section (102).

Abstract: A hose clamp for repairing high pressure hydraulic hoses comprises a first clamp portion mated to a second clamp portion around a hose. The first and second clamp portions each comprise a semi-cylindrical channel extending longitudinally along an inner surface of the clamp. The hose is received within the channel and a plurality of fasteners releasably affix the clamp portions together. A plurality of barbs extending circumferentially around the channel compress the hose to minimize leakage from the hose.

Abstract: A first component has a major section and a coaxial minor section. The major section has an open forward end. A forward annular projection extends radially inwardly from the major section adjacent to the open forward end. A second component has a major section and a coaxial minor section. The major section has an open rearward end. A rearward annular projection extends radially outwardly from the major section adjacent to the open rearward end. Axially spaced annular recesses are provided in the rearward annular projection with an O-ring in each annular recess. The O-rings are slidably received and in sliding contact with the major section of the first component.

Abstract: A coupling (20) capable of connecting together two piping sections (30, 30) having the same outer diameter, two piping sections (40, 40) having the same inner diameter, or two piping sections (30, 40) having different diameters. The coupling (20) can have a unitary tubular structure and it can be made of the same material and in the same manner as conventional PVC piping. Installation of the coupling (20) during construction of a passageway can be accomplished in same manner as is conventionally accomplished with three distinct types of coupling.

Abstract: A plurality of segments is provided which comprises an inner surface plate, and side plates and end plates provided upright on a peripheral edge of the inner surface plate. The inner surface plate, the side plates, and the end plates are formed integrally from a plastic material. The segments are linked in a circumferential direction with a diameter expander being inserted between the adjacent segments to assemble a closed ring-shaped diameter-enlarged pipe unit. The diameter-enlarged pipe units are sequentially linked in the pipe-length direction to install a segmental rehabilitation pipe inside the existing pipe. An opening is formed in the end plate and the diameter expander so that the filler material injected into a space between the existing pipe and the segmental rehabilitation pipe flows in or out through the opening.

Abstract: The pipe repair coupling includes a sleeve and two seal retainers that clip to the ends of the sleeve to retain corresponding seals therein. The repair coupling is installed about a damaged section of PVC or other hard plastic pipe without the need for substantial displacement of either portion of the broken pipe or the need to dress or otherwise modify the broken ends of the pipe. A seal retainer and a seal are placed over each portion of the broken pipe, and the sleeve is slipped over one of the broken pipe portions. The two pipe portions are aligned with one another, and the sleeve is generally centered over the break. The two seal retainers are then snapped into place on the ends of the sleeve, capturing the seals between the seal retainers and corresponding seats and distending the seals to bear against the broken pipe therein.

Abstract: A support clamp assembly for mechanically securing a thermal sleeve to an elbow conduit in a jet pump of a nuclear reactor vessel, the support clamp assembly including: a tension shaft having a first end extendable through an opening in a sidewall of the elbow conduit and an opposite end with a head; a cruciform assembly having a base with an opening to receive the tension shaft and to abut the head of the shaft, wherein the cruciform assembly seats in the thermal sleeve; a boss slidable over the first end of the tension shaft and having a curved surface seating an outside surface of the elbow conduit, and a coupling device engaging the first end of the tension shaft and abutting the boss, wherein the coupling device places the tension shaft under tension to secure the cruciform assembly to the thermal sleeve and the boss to the elbow conduit.

Abstract: A furnace repair device and method therefore is accomplished by including pipe of suitable length and strength to have at least one swedged end permitting assembly in female to male relationship, which permits a proper securing of the replacement pipe in a desired position in the heat exchanger.

Abstract: Apparatus for controlling flow of fluid through a pipe, comprising: a housing configured to enclose a portion of a pipe through which fluid flow is to be controlled, the housing comprising: a first part defining a chamber configured to receive the portion of the pipe; and a second part extending from the first part, the second part defining a stowage space adjacent the chamber; a flow control device from a stowed position in the stowage space to an installed position in the chamber for selectively controlling flow through the housing, the flow control device comprising a body having a leading end defining a cutting surface for removing a section of the pipe enclosed by the housing as the flow control device moves from the stowed position to the installed position in order to form an opening in the pipe for receiving the flow control device when in the installed position; and a rotary drive mechanism for moving the flow control device from the stowed position to the installed position in response to a rotary i

Abstract: A first sealing body and a second sealing body made of a resiliently expandable material, such as Kevlar-reinforced rubber, are connected by an intermediate piece that, having a larger wall thickness, is made of the same material, and is flexible, thereby providing the device excellent ability to pass through pipe bends. Together they surround a contiguous cavity into which pressurised air can be introduced via a pressurised air connection disposed on an end plate at a rear end of the device, to expand the diameters of the sealing bodies whereupon the latter tightly close off a test space in a pipe connection. A material feeding connection is connected to a discharge opening in a threaded bushing connecting the intermediate piece to the second sealing body, and a cable connection is connected to a camera facing to the outside that is attached to the bushing.

Abstract: A device for sealing a leak in a pipe (10) having at least one hole or crack (12), including an elastomer plate (14) applied to the leak site by a force distributor (16), and a tightening strap (20, 22) arranged around the pipe in order to apply a force onto the force distributor. The force distributor includes a support grid and separate force modules, each of the modules being placed so as to be slidable in one of the units of the grid and arranged perpendicular to the pipe so as to apply shear forces to the elastomer plate at the leak site, forcing the elastomer to deform so as to closely match the concave or convex shape of the pipe at the leak site and thus to seal the hole or crack.

Abstract: The present invention relates to a pressure vessel (1) for a high pressure press comprising at least a first sub-cylinder (4) and a second sub-cylinder (6), which are axially connected to form a cylinder body (2) for enclosing a high pressure medium, and a sealing arrangement arranged at the inner wall of the cylinder body for sealing the joint (3) between the first and the second sub-cylinder (4, 6) against leakage of the pressure medium. The sealing arrangement is comprising a ring shaped sealing band (18), a first circumferential protruding flange (30), which is arranged on the inner wall of the first sub-cylinder and which axially extends from the joint (3) and away from the second sub-cylinder (6), and a second circumferential protruding flange (32), which is arranged on the inner wall of the second sub cylinder (6) and which axially extends from the joint (3) and away from the first sub-cylinder (4).

Abstract: A disconnect transfer conduit comprising flexible tubing; a deformable sleeve surrounding a portion of the flexible tubing; wherein the sleeve is attached to the flexible tubing and is formed of a material having plasticity such that pressure applied to the sleeve causes the sleeve to deform about and seal the flexible tubing and upon continued application of pressure to the sleeve, the sleeve and flexible tubing are cut and the sleeve retains a deformed shape substantially sealing the tubing. Also provided is a method of sealing flexible tubing comprising applying pressure to a sleeve attached to flexible tubing to deform the sleeve and seal the tubing; wherein, applying further pressure to the sleeve to cut the sleeve and tubing, thereby leaving the tubing substantially sealed where cut.

Abstract: A bicycle chain guide includes a first guide plate, a second guide plate, a first connection part and a second connection part. The first guide plate has a first chain engagement surface and the second guide plate has a second chain engagement to form a chain receiving area. The first and second connection parts extend between the first and second guide plates to connect the first and second guide plates together at first and second spaced locations, respectively. The first connection part is fixed to the first guide plate by a fastener. The first guide plate has a first abutment and the first connection part has a second abutment. The first and second abutments are arranged at a rear end of the chain guide to limit relative movement of the first and second guide plates.

Abstract: A pipe repair clamp includes a flexible strap having ends that are brought together when the clamp is closed. A thrust plate is secured near the first end of the flexible strap. A lug is secured to the thrust plate. A lug plate is secured near the second end of the strap. A threaded stud is secured to the lug plate and is used to tighten the clamp. A lug cover plate is secured to the lug and the thrust plate and receives the threaded stud. The lug cover plate includes a curved end portion covering at least a portion of the lug. A locking plate receives the threaded stud. The locking plate slides along a top surface of the lug and over the lug cover plate when the first and second ends of the strap are pulled toward each other when the clamp is tightened around a pipe.

Abstract: A pipe repair fitting comprising a mating pair of generally semi-circular segments, each formed by an arcuate wall having arcuate ends, the segment walls carrying compressible seals for sealing two pairs of mating arcuate ends of the segments and sealing on the outer periphery of the pipe, at least one threaded hole in each arcuate wall end, a common bolt threaded into each of the threaded holes of each pair of mating arcuate ends and serving to sustain hoop forces in the fitting imposed by fluid leaking out of the pipe and contained by said seals.

Abstract: A replacement fitting assembly for a pipe is disclosed including a split connector with a first wall portion having a first externally threaded portion and a first support portion, and a second wall portion having a second externally threaded portion and a second support portion, the first and second outer wall portions being configured to be aligned with one another to form a tubular opening, and a fastener having a side wall defining a central longitudinal opening, the side wall including an internally threaded nut portion configured to engage the first and second externally threaded portions of the connector, and an extension portion adjacent the nut portion, the side wall having a gap configured to permit lateral entry of a pipe into the longitudinal opening. A method of replacing a fitting assembly also is described.

Abstract: A repair coupling for joining a first pipe with a second pipe includes (a) a hollow body having a first open end, a second open end, and a passageway the interior surface of the body defining a peripheral, helical body edge terminating in a body edge locking lug, and (b) a hollow tubular insert slidably disposed within the body, the tubular insert having a first open end and a second open end, the tubular insert defining a passageway he exterior surface of the tubular insert defining a peripheral, helical insert edge terminating in an insert edge locking lug. The tubular insert is slidable between (i) a first insert position wherein the helical insert edge is in contract with the helical body edge and (ii) a second insert position wherein the helical insert edge is spaced apart from the helical body edge.

Abstract: A pipe connector for connecting to a first pipe includes a second pipe and a fastener. The second pipe has a number of connection sections of difference outer diameters, one of which is fittingly coupled to the first pipe. The fastener sleeves on the first pipe and the second pipe and fastens the first pipe to the second pipe.

Abstract: A pipe repair fitting comprising a mating pair of generally semi-circular segments, each formed by an arcuate wall having arcuate ends, the segment walls carrying compressible seals for sealing two pairs of mating arcuate ends of the segments and sealing on the outer periphery of the pipe, at least one threaded hole in each arcuate wall end, a common bolt threaded into each of the threaded holes of each pair of mating arcuate ends and serving to sustain hoop forces in the fitting imposed by fluid leaking out of the pipe and contained by said seals.

Abstract: The invention is a repair coupling for joining a first pipe with a second pipe includes (a) a hollow body having a first open end, a second open end, and a linear passageway therebetween, the interior surface of the body defining a peripheral, helical body edge terminating in a body edge locking lug, (b) a hollow tubular insert slidably disposed within the body, the tubular insert having a first open end and a second open end, the tubular insert defining a linear passageway between the first open end of the tubular insert and the second open end of the tubular insert, the exterior surface of the tubular insert defining a peripheral, helical insert edge terminating in an insert edge locking lug, and (c) means for sealing the exterior surface of the tubular insert with the interior surface of the body.

Abstract: A method and apparatus for modular pipe repair, the method comprising attaching two enclosure halves over a leak in a pipe to assemble a first repair enclosure and determining if another repair enclosure is needed for another leak in the pipe. If another repair enclosure is needed, the method further comprises drilling in the first repair enclosure drill hole passages in selected angled grooves thereof to connect to a primary groove in the enclosure, attaching a second repair enclosure to pipe, drilling in the second repair enclosure drill hole passages in selected angled grooves thereof to connect to the primary groove in the second enclosure, and attaching hub clamps to the first repair enclosure and the second repair enclosure. Finally, the method comprises injecting sealant into a plurality of injection points to fill the selected angled grooves and the primary grooves in the repair enclosures.

Abstract: An example apparatus for replacement of a breached pipe section includes a first cylindrical pipe fitting having a first surface defining a first aperture, a middle pipe member, and a second cylindrical pipe fitting having a second surface defining a second aperture, and first and second aperture caps. A first end of each of the first and second pipe fittings is welded to opposite ends of the middle section, and a second end opposite of each of the first and second pipe fittings is welded through the respective first and second apertures to opposite ends of pipe surrounding the breached pipe section. The first and second aperture caps are welded to the apertures of the first and second pipe fittings to close the respective first and second apertures.

Abstract: A security splicing system of aligned pipes against an expansion and/or contraction thereof due to variations in temperatures, has a flange unit providing a stability and watertightness of a splice, and including a double flange with two identical fastening elements gripping an outer face of an end area of two previously spliced pipes with a watertight connecting flange, so that an accidental displacement of the watertight connecting flange is prevented in an event that dimensions of the end area of the pipes vary due to an expansion or contraction.

Abstract: The present invention relates to sealing means made of a plastically deformable material for mechanical sealing of hollow hoses (2) of elastic material by means of an appliance having at least two jaws, at least one of which is movable towards and away from the other and which, when moving towards each other, crimp the sealing means against the hose (2) for contamination-tight sealing of the same, the sealing means (20) comprises at least one sealing member (4, 4?; 44, 44?; 64, 64?; 74, 74?; 84), which has two opposite ends and an opening (40, 40?) that extends between said ends to allow the at least one sealing member to be slipped onto the hose (2) to be sealed. The present invention also relates to a kit comprising a sealing means and an appliance for sealing of hollow hoses and to a method for mechanical sealing of hollow hoses.

Abstract: A slip joint clamp is disclosed which structurally replaces cracked welded joints in the core spray downcomer slip joint coupling, which is part of the lower portion of internal core spray piping internal to a reactor vessel of a Boiling Water Reactor plant. The internal piping delivers core spray cooling water to the reactor core region. The clamp assembly consists of a primary clamp housing and a secondary clamp housing, which are rotationally joined together by a hinge assembly including a hinge pin. The clamp assembly is installed at a desired elevation relative to the downcomer slip joint, and then secured to the downcomer piping by installing coupling bolts and associated coupling bolt keeper nuts that hold the primary and secondary clamp housings in a facing relationship to one another around the downcomer slip joint.

Abstract: A clamping device supports or structurally replaces a weld joint between connected pipes. The clamping device includes an upper clamp body and a lower clamp body securable on opposite sides of the connected pipes in facing relation, and at least one clamp bolt connecting the upper and lower clamp bodies and extendable through the connected pipes. One of the upper and lower clamp bodies has at least one shaped depression, which receives a complementary shaped clamp bolt nut engageable with the clamp bolt. The shaped depression prevents rotation of the clamp bolt nut.

Abstract: An inexpensive method for quickly and safely sealing illicit taps in a pipe, such as for example a pipe through which a combustible material like oil or gasoline is flowing. The method first seals the valve outlet of the illicit tap with epoxy and removes the valve handle from the valve. Finally the entire tap including the valve and surrounding pipe area is wrapped with an epoxy impregnated material such as fiberglass or carbon composite fabric.

Abstract: The present invention relates to a method and apparatus for repairing water and sewer lines. The apparatus is a universal slip and expand fitting which will permanently or semi-permanently repair leaks in such lines.

Abstract: The present invention provides an apparatus for repairing the outer sheath of a pipe, said apparatus comprising a sleeve (12) adapted to surround the pipe, sealing means (16) for establishing at least two circumferential seals between the surface of the pipe and means (17, 18) for forcing a sealing solution against the surface of the pipe between the two circumferential seals, the arrangement being such that in use the sleeve is spaced from the outer sheath of the pipe to form a sealed annulus therebetween and a method of repairing an outer sheath of a pipe, said method comprising the steps of mounting a sleeve over the pipe to provide an annulus therebetween, securing the sleeve in place around the pipe, providing two circumferential seals between the sleeve and the pipe and forcing a sealing solution against the surface of the pipe between the two circumferential seals to form a pressure seal between the circumferential seals and sealing the annulus between the pipe and the sleeve.

Abstract: The present invention relates to an apparatus which forms a sealed joint between two pipes, particularly but not limited to roofing drain pipes. This apparatus includes a cylindrical body made of rubber or similar material that grips and seals two pipes when it is axially compressed by two halves of an articulated housing as they move towards each other. The two half bodies of the articulated housing are connected together by means of integrated threads such that when one body is rotated in one direction, the bodies move towards each other, thereby reducing the overall length of the housing, and compressing/deforming the rubber seal. The housing also provides a means of rotating/tightening the apparatus by providing a mating head for an appropriately shaped tightening tool.

Abstract: A exhaust system repair apparatus provides a basic u-bolt member and saddle clamp design which can be positioned behind an existing damaged flange, one which cannot be tightened against an opposing flange in order to create an exhaust seal. The apparatus features ears which are attached to and positioned proximal to the u-bolt base. Each ear further comprises a slot to align with an opposing, existing flanges'holes. Slots are available which are exactly positioned for a given application, or the elongated slots are provided in other embodiments which provide a more universal fit. The apparatus thereby provides for tightening the damaged flange against an undamaged opposing flange, without having to replace a damaged flange.