Abstract: A connector includes a first connector body and a second connector body configured to be coupled to one another. The first connector body has a through hole and a cavity. The through hole and the cavity are configured to receive a shield of a hardline coaxial cable. A first washer is disposed in the first connector body and is configured to permit the shield to be pushed in a first direction through the through hole and into the cavity while resisting movement of the shield in a second direction opposite to the first direction. The second connector body has a through hole and a cavity. The through hole and the cavity of the second connector body are configured to receive a tubular member. A second washer is disposed in the second connector body and is configured to permit the tubular member to be pushed in the second direction through the through hole of the second connector body and into the cavity of the second connector body while resisting movement of the tubular member in the first direction.

Abstract: A method and assembly for protecting a device connected to a wiring harness is disclosed. The assembly includes a protective tubular shield and a positioning device, with the protective tubular shield having a bore for receiving the device at least partially therein. An elongated wiring harness extends from the device being protected and through the bore of the protective tubular shield. The positioning device is formed having a band and at least one flexible, resilient finger extending radially inwardly from the band. At least one of the fingers forcibly engages the wiring harness to releasably maintain the positioning device and the protective tubular shield in a protection position along the wiring harness at least partially surrounding the device being protected.

Abstract: A pipe system has a pipe with an axis and a retainer groove formed in an exterior of the pipe near an axial end of the pipe. The pipe system also has a tubular body with an interior and one end sized to receive the axial end of the pipe therein to form a pipe assembly. The pipe system also has a retainer configured to be received in the retainer groove and to be both axially movable and radially movable relative to the retainer groove during formation of the pipe assembly and to retain the pipe and the tubular body in the pipe assembly.

Abstract: A pipe-fitting includes a coupling and a flexible pipe-restraint gasket. The coupling includes a bell that defines a pipe insertion mouth at an end of the coupling and an inner recess. The flexible pipe-restraint gasket assembly is disposed within the inner recess and includes an annular body, a plurality of discrete gripping members and at least one extension portion. The plurality of gripping members are disposed around an outer periphery of the body. The at least one extension portion extends from the body and is disposed between a pair of the plurality of gripping members. The at least one extension portion defines a pocket.

Abstract: A connector includes a first connector body and a second connector body configured to be coupled to one another. The first connector body has a through hole and a cavity. The through hole and the cavity are configured to receive a shield of a hardline coaxial cable. A first washer is disposed in the first connector body and is configured to permit the shield to be pushed in a first direction through the through hole and into the cavity while resisting movement of the shield in a second direction opposite to the first direction. The second connector body has a through hole and a cavity. The through hole and the cavity of the second connector body are configured to receive a tubular member. A second washer is disposed in the second connector body and is configured to permit the tubular member to be pushed in the second direction through the through hole of the second connector body and into the cavity of the second connector body while resisting movement of the tubular member in the first direction.

Abstract: An apparatus and method of biasing a service tube within a turbine rear frame of a gas turbine engine. The engine includes an engine core having a service fitting. A service tube is mounted to the service fitting and at least one support mount secures the service tube to the engine core. A spring element on the support mount can provide a biasing force to the service tube.

Abstract: A coupling device for a tube having an end portion provided with an outer chamfer, and an associated method. The coupling device includes a tubular body provided internally with an annular sealing element and with an attachment member for retaining the end portion of the tube in leak-tight manner in the body. The device further includes at least one retractable abutment arranged so as to oppose insertion into the body of a tube end portion that is not chamfered but allow insertion of a tube that is chamfered, the chamfer of the tube end portion forming a cam for causing the abutment to retract while the tube is being inserted into the body.

Abstract: A quick-connect system for a high pressure connection includes a port and a collet. The port defines an inlet opening at an outer longitudinal end of the port and includes an inner wall having a first sloped surface at least partially defining a collet cavity. The first sloped surface has a first diameter at a first end nearest the inlet opening and a second diameter, which is greater than the first diameter, at a second end opposite the first end. The collet includes a head portion and a plurality of legs extending distally from the head portion, and each leg of the plurality of legs includes a distal foot portion. In a connected state, the foot portions of the plurality of legs are located in the collet cavity, and the foot portions define an outermost diameter that is greater than the first diameter.

Abstract: A method of forming a receiver 130 comprises arranging first structures 120a in a first set 117 and second structures 120b in a second set 119 such that the first structures 120a and the second structures 120b extend within an interior space 136 of the receiver 130 in a direction normal to a longitudinal central axis 112 of the interior space 136. The method further comprises indirectly bonding the first set 117 of the first structures 120a to the second set 119 of the second structures 120b.

Abstract: An aspect of the invention provides for a wear pad system for a turbine combustion system including a transition piece (TP) forward ring, an impingement sleeve substantially surrounding the TP forward ring, and a gap between the TP forward ring and the impingement sleeve, the wear pad system comprising: a wear pad extending through a hole in the impingement sleeve and through the gap to contact the TP forward ring, the wear pad having a radially outer portion and a radially inner portion, the radially outer portion in contact with a radially outer surface of the impingement sleeve and the radially inner portion in contact with a radially outer surface of the TP forward ring.

Abstract: A female hydraulic coupling member has a pressure-energized C-seal having an internal cavity that is positioned to seal between the body of the coupling and the probe of a corresponding male hydraulic coupling member inserted in the receiving chamber. A metal sleeve lines at least a portion of the receiving chamber to resist galling. The main portion of the sleeve has an inside diameter (i.d.) and an outside diameter (o.d.) with a first end of the sleeve abutting a shoulder in the central axial bore of the coupling member. An opposing second end of the sleeve has an annular, axial extension with a larger i.d. and a smaller o.d. than the main portion of the sleeve. At least a portion of the extension projects into the internal cavity of the pressure-energized C-seal so as to retain and position it.

Abstract: A seal assembly features radially stacked sealing elements separated by a ring shaped structural member with the structural member configured to fold on itself as the inner and outer sealing elements are axially compressed during the setting process. The structural member remains embedded in the outer sealing element when the assembly is set. Seal rings flank the inner and outer sealing element and feature an outwardly facing bevel to contact a conforming bevel shape on extrusion ring assemblies. During axial compression the extrusion rings are pushed out with the seal rings and then the inner and outer sealing elements are axially compressed as the structural member's ends come together and its middle folds. The structural member creates gaps to allow fluid to escape during setting.

Abstract: The double-tier drain filter system includes an elongate base having an upper section and a lower section. A drain cover with perforations couples to the upper section, and the lower section couples to a drain pipe. Threads are provided between the lower section and the drain pipe to form a threaded interlock. A recess inside the upper section receives a filter assembly which includes a removable, perforated drain basket and a filter element inside the drain basket. An annular mount flange with threads extends from the bottom of the drain cover to thread into the matching inner threads of the drain basket forming another threaded interlock. The drain cover and the filter assembly serves as a double-tier, two-pass filter ranging from coarse to fine filtering, respectively. Tools are provided to facilitate installation and cleaning.

Abstract: A system includes a conduit and a gasket assembly. The conduit includes a body and has a bell defining an opening disposed at one end of the conduit. The bell includes a ridge defining a circumferential internal groove, a sloping portion defining an internal recessed area and disposed adjacent to the ridge, and an abutment end inwardly extending from the sloping portion in a direction that is perpendicular to a central axis defined by the bell. The gasket assembly is disposed within the internal groove. The gasket assembly includes a plurality of gripping inserts each comprising a hollow body and an elastomeric gasket having a circular shape and being disposed within the hollow bodies defines by the plurality of gripping inserts.

Abstract: A flexible annular cartridge for joining and sealing a bell and spigot pipe joint, wherein the outer contour of the cartridge is approximately frustoellipsoidal, the cartridge composed of an annular member having outer and inner surfaces and opposite first and second ends, with a plurality of pipe gripping members positioned on the inner surface; a flexible annular gasket having outer and inner surfaces, opposite first and second ends, and a circumferentially extending sealing lip projecting inwardly from the gasket inner surface, in which the annular member first end engages the flexible annular gasket second end; and a backup ring having a hardness that exceeds the hardness of the gasket, in which the backup ring engages the gasket at the gasket first end. Methods are provided for using the cartridge, as well as a pipe joint that contains the cartridge.

Abstract: A multilayer annular seal assembly including at least one outer sealing ring including at least one inner annular space and at least one inner sealing ring formed with one or more inner annular chambers.

Abstract: Gaskets for use with a bell and spigot coupling system are disclosed herein. The gasket comprises an elastomeric member having a front edge, a first section, and a second section. Axial forces generated by the insertion of the spigot to the first section of the elastomeric member displace the first section of the elastomeric member in an axial and radial direction.

Abstract: A wedge for a concrete post-tension reinforcement anchorage system is shaped such that the compressive force on the tendon after tensioning of the anchorage system is substantially evenly distributed over a length of the outer surface of the tendon that is engaged by the internal surface of the wedge. The external surface of the wedge may have a first section with a first taper angle and a second section with a second taper angle, the second taper angle being larger than the first taper angle. The internal surface of the wedge may have a first section with a first taper angle and a second section with a second taper angle, the second taper angle being greater than the first taper angle. An anchor with a bore with two taper angles and tooth profiles of threading patterns on the internal surface of the wedge are also disclosed.

Abstract: A gasket for preventing separation of interconnected pipes including a compressible body having a plurality of metal segments partially embedded therein. Each of the metal segments includes an inner surface having at least one tooth configured for engaging a spigot end of a pipe and an outer surface having an arm with a substantially flat portion arranged adjacent to a forward section of a retainer groove of the gasket, the substantially flat portion being configured for displacing the segment radially and axially upon insertion of the spigot end into a bell end of the other pipe thereby decreasing the spigot insertion force required to seat the spigot end within the bell end and the gasket.

Abstract: A mechanical pipe joint system for joining a male piping member and a female piping member, the female piping member having a bell portion to receive a portion of the male piping member, includes a retaining flange and a restraining gasket, the restraining gasket including a sealing portion, a flange portion, and a restraining portion, the restraining portion including a plurality of circumferentially-spaced restraining segments.

Abstract: The present invention provides a quick connect coupling with a retention feature that resists inadvertent disconnection of the coupling in a pressurized state.

Abstract: A flange assembly for a watertight coupling of smooth surface pipe includes a triple metal ring provided for anchoring and retention and having three unitary rings which are identical and form substantially an entirety of a circumference and a sheet on which the unitary rings are solidly joined and which constitutes a base of the triple ring. Each of the unitary rings is provided throughout an entirety of its inner edge with folds forming in their outer most part a succession of vertices. The unitary rings are configured to rest on a smooth outer surface of pipes and the vertices are driven into the smooth outer surface to prevent an axial displacement allowing an application of the triple ring, and to distribute a penetrating action so as to decrease a possibility of tearing and damage of the smooth outer surface of the pipes.

Abstract: A packing, interposed between respective ends of electric wire tubes serving as tubular members opposed to each other, includes a main body and an elastic member. The main body is inserted through inner-diameter-openings of the respective ends of the electric wire tubes, respectively. The elastic member is situated substantially at a center of the main body and the respective ends of the electric wire tubes are abutted against the elastic member. The electric wire tubes joined with each other through the packing are inserted into the body constituting the coupling. Then, grip portions of the body are forced into a grip case. The body is thereby decreased in diameter, and hence the electric wire tubes are fastened in a biting manner by the body.

Abstract: A connection structure includes a thin wall stainless steel pipe with a swelling portion, a sandwiching portion forming an inclined pressing surface capable of pressing an inclined surface of the swelling portion, a joint spacer forming a first retention portion pinching a first gasket with respect to the swelling portion as well as having a fitting portion fitted to an outer periphery of an end portion of the thin wall stainless steel pipe, and forming a gasket receiving portion in an outer peripheral side thereof, and a joint having a second retention portion sandwiching and pressing a second gasket to an inner peripheral side facing the gasket receiving portion.

Abstract: A tube coupling including a body having a bore and an open end, a slidably movable jaw ring received in the bore, a bushing fitted into the body open end having a surface facing the movable jaw and defining a stationary jaw, and a resiliently expandable grab ring disposed in the bore between the movable and stationary jaw. With a tube end being inserted into the bore and through the grab ring, and with the tube being grabbed by the grab ring to retain the tube end in the bore, the movable jaw is responsive to fluid pressure received within the tube to slidably move towards the stationary jaw face such that a portion of the grab ring is clamped therebetween.

Abstract: A seal material and a washer are fitted on a piping main body of a first piping, a bead portion is inserted into a bead portion insertion hole and the seal material and the washer are inserted into a seal material insertion hole. In this state, a female screw is threaded onto a male screw until a piping side stopper and a nut side stopper are abutted, and the nut member is joined to a piping side tube portion. In a state where the piping side stopper and the nut side stopper are abutted, the seal material is compressed in an axial direction via the washer by the small diameter tube portion and the seal material pressure-contact surface. The seal material is elastically joined to an outer circumferential surface of the piping main body and an inner circumferential surface of the bead portion insertion hole in a radial direction.

Abstract: An invention generally relates to an adjustable connector that acts as a coupling device to connect an object (such as pipe or tubing) having a range of diameters and thread styles to an item (such as a piece of equipment or another length of pipe or tubing). The device is generally comprised of a casing member and an internal member, which is further comprised of tab members positioned in tab openings in a core member. Preferably, a semi-flexible sheath covers the internal member and seals it to the casing member and the object, so that a chamber is formed between the internal member and the casing member. Mechanical compression members may be placed in the chamber. As pressure increases within the object, the chamber pressure may also increase, forcing the sheath against the tab members, which are forced against the object, holding the object in place by friction.

Abstract: A method and apparatus for restraining plastic pipe against both internal and external forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline is shown featuring an improved restraining and sealing mechanism. The restraining and sealing mechanism includes a circumferential housing and a companion sealing ring which are received within a mating groove provided in the belled end of a female pipe. The circumferential housing has an interior region which contains a gripping ring insert. The sealing ring and housing are integrally located within a belled pipe end during belling operations. Either the exterior of the gripping ring or the interior of the housing is provided with a low friction coating.

Abstract: A gasket for connecting two lengths of pipe in a standard mechanical joint, which gasket maximizes the advantages of both restrained push-on joints as well as mechanical joints, as are known commonly in the art. The invention has application to long-run pipe lengths as well as appurtenances, including fittings and connections. The gasket contains locking members that act to restrain separation upon the instance of any force tending to separate the connected pipe lengths.

Abstract: A pipe coupling (10) for joining together the ends of two adjacent pipes includes a housing (12) which defines a generally central bore (13) along a central axis of the housing for receiving the ends of the two adjacent pipes, and a locking arrangement (14) at each end of the housing (12) for locking the pipes to the coupling. Each locking arrangement (14) includes an annular chamber (23) within the housing, an inlet for allowing fluid into the chamber, an outlet for allowing fluid out of the chamber, and an annular seal (24) which is arranged to move within the annular chamber axially of the housing. A locking ring (26) is provided between the annular seal (24) and a plurality of radially movable grippers (30) for locking the grippers to a pipe end within the housing.

Abstract: A coupling for attachment to the end portion of a pipe includes jaw members adapted to slide along an inner end taper in the coupling body so that linear movement of the jaw members toward the end of the inner end taper adjacent an end of the coupling body causes movement of the jaw members radially inwardly of the coupling body against the end portion of the pipe when received in the coupling body. The coupling may include a bell type gasket to function as a spring and the spring action of the gasket may be augmented by installing a springy crib ring around the gasket inside the coupling body.

Abstract: A pipe connecting device designed for detachable, sealing assembly of two pipe ends which device consists of an outer part and an inner part inserted axially into the outer part and cooperating therewith for internal connection to the first pipe end. The cooperating contact surfaces of both the inner part and the outer part are conical in shaped. Furthermore, means are arranged to prevent axial movement between the conical contact surfaces.

Abstract: A restraining element for preventing separation of a pipe joint used to join a bell end of a female plastic pipe to the male end of a mating pipe. The restraining element is formed from a compressible body of elastomeric material, the compressible body having a segmented metal ring located therein with gripping teeth for engaging an outer surface of the mating male pipe. The ring segments making up the segmented metal ring are oriented such that the gripping teeth of the ring segments are out of contact with and initially angled away from the outer surface of the male plastic pipe. The teeth of the annular gasket are forced into engagement with the exterior surface of the male plastic pipe as the pipe joint is assembled. The teeth are oriented to allow movement of the male pipe in a first direction relative to the female bell end opening during assembly, but to resist movement in a opposite direction after the pipe joint has been assembled.

Abstract: A pipe coupler for joining a pair of pipe sections in a fluid tight manner. A hollow connector has an internal chamber within which is to be located a pipe section. Surrounding the pipe section and mounted in conjunction with the connector is a coupler. The coupler includes a grab ring housing. Formed within the grab ring housing is an annular concavity. Mounted within this concavity is a grab ring which includes a plurality of pivotable biting members which are arranged to dig in the wall surface of the pipe section when the pipe section is longitudinally moved a limited withdrawing distance from the connector.

Abstract: A locking segment for use in connecting two lengths of pipe has a radically extending heel that serves as a rotational brake. By mating the brake into an annular trough, that is, by placing it between two walls, the rotation of the segment can continue only until points on the brake mure between the two walls. Rotation of the segment in response to increasing thrust pressures can thereby be arrested before the rotation causes the segment to bear on the spigot with a radically inward force great enough to penetrate the spigot.

Abstract: A locking segment for use in connecting two lengths of pipe has a radically extending heel that serves as a rotational brake. By mating the brake into an annular trough, that is, by placing it between two walls, the rotation of the segment can continue only until points on the brake mure between the two walls. Rotation of the segment in response to increasing thrust pressures can thereby be arrested before the rotation causes the segment to bear on the spigot with a radically inward force great enough to penetrate the spigot.

Abstract: A pipe coupler includes a gripping element adapted to engage an outer surface of a pipe end to oppose a pull-out force on the pipe end, and a torque drive mechanism which rotates the gripping element to induce longitudinal movement of the gripping element along the pipe end in an opposite direction. The gripping element may take the form of a collet having a threaded inner surface, and the torque drive mechanism incorporated in a back-up ring that surrounds the collet. The torque drive mechanism may be provided by an inwardly extending, longitudinal flange which is stamped out of the metallic back-up ring, and which engages a longitudinal notch in the collet. This design allows the intentional removal of the coupler at any time that the coupling is not under a large axial load.

Abstract: Coupling device for a pipe, comprising a sleeve having an insert end for the pipe and a sealing means adapted for realizing a seal around the pipe when inserted in the sleeve, said sealing means comprising a plurality of mutually slidable elements which together form a ring, and a grip ring being mounted within said elements and extending along at least a part of the perimeter of the pipe, the grip ring being formed with dents pressed out of the plane of the grip ring.

Abstract: A method and apparatus for restraining pipe against internal forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline is shown featuring an improved self restrained pressure gasket. The pressure gasket has a rigid ring formed as an integral part of the gasket thus making the gasket easy to install. The rigid ring which forms the restraining mechanism has rows of teeth of varying lengths that, when assembled, engage at various points around the circumference of a mating pipe. The teeth adjust to the tolerances allowed in pipe manufacturing without losing gripping capacity.

Abstract: A fluid pressure hose coupling for connecting a flexible hose to a pressurized fluid line. The coupling has a connecting end section for securement to a pressurizable line and a cylindrical nipple end section for securing an end section of a flexible hose thereto. The nipple end section has a tapered cone-like outer surface having a larger outer diameter section at a free end thereof. A cylindrical hose clamping sleeve is positionable about the nipple end section and also has an inwardly tapered inner surface whose diameter is larger at the front end thereof and wherein the inner surface of the clamping sleeve and the outer surface of the cylindrical nipple end section extend parallel to one another.

Abstract: A coupling receives a non-metallic tube (12) in an opening of a coupling body (10). A seal assembly (22, 24) disposed inside the coupling body (10) seals between the body (10) and the tube (12). A collet (16) disposed in the coupling body (10) includes a tapered external surface (50) that engages a tapered wall in the coupling body (10) to resist pull-out of the tube (12). The collet (16) includes an inner toothed (52) surface for gripping the tube (12) and has a split (70) or slots (54) that allow the collet (16) to radially expand and contract. A rotation prevention member, which in a preferred embodiment is a longitudinal rib (56) extending inwardly from the collet (16), limits relative rotation between the collet (16) and the tube (12). Moreover, edges (74) of the split (70) are rounded so that the collet can rotate relative to the coupling body (10).

Abstract: An elastomeric seal having an antiextrusion device molded integrally into or onto the low pressure side of the seal. The antiextrusion of a corrugated strip into an elastomeric seal. One embodiment of the invention has the strip positioned with the midplane of its corrugations normal to the mating seal surfaces and parallel to the midplane of the seal groove. Another embodiment of the invention has the midplane of the corrugations canted within the seal. The antiextrusion device is applicable to annular seal rings, linear seals, or seals of more complex configuration.

Abstract: The invention relates to a pipe coupling having a sleeve-shaped outer body for accommodating a sealing arrangement and at least one pair of clamping elements, which is arranged adjacent to one side of the sealing arrangement inside the sleeve-shaped outer body and serves to clamp the end of an inserted pipe in place, in which case the pair of clamping elements can be restrained against the end of an inserted pipe transversely to the axis of the pipe coupling via a clamping screw passed through the sleeve-shaped outer body and is pressed apart by of a spring, and the clamping elements are guided in the restraining direction in the sleeve-shaped outer body.

Abstract: Coupling device for a pipe, comprising a sleeve having an insert end for the pipe and a sealing means adapted for realizing a seal around the pipe when inserted in the sleeve, said sealing means comprising a plurality of mutually slidable elements which together form a ring, and a grip ring being mounted within said elements and extending along at least a part of the perimeter of the pipe, the grip ring being formed with dents pressed out of the plane of the grip ring.

Abstract: A pipe coupling has an elastomer packing collar (5) arranged in a closable housing (4) with radial end walls (14) and comprising two axially spaced apart ring-shaped beads (6) which project radially inwards and sealingly lie against a pipe (1, 2). Each ring-shaped bead (6) subdivided into two adjacent radial beads (8, 9) by a ring-shaped gap (7) oriented at an acute angle to the longitudinal axis of the pipe coupling. This gap (7) forms at the outer radial bead (9) a sharp-cornered packing lip (10). The ring-shaped gap (7) may be closed by pressing together and elastically deforming the two adjacent radial beads (8, 9). Each front side (11) of the packing collar (5) is inclined inwards towards the longitudinal axis of the pipe coupling. A conical clamping ring (13) with a subdivided circumference, axially and radially supported on the housing (4), lies against the front side (11) of the packing collar (5).

Abstract: A jar ticket includes a ticket body having first, second and third panels wherein the third panel is folded onto the second panel and the second panel is then folded onto the first panel to constitute a folded section of the ticket body. A wrapper body is then folded around the ticket body folded section. The wrapper body includes first, second and third panels. The second panel of the wrapper body is brought adjacent a first side of the folded section of the ticket body and the first and third panels of the wrapper body are folded over a second side of the folded section of the ticket body. A first layer of adhesive is disposed between the first and third panels of the wrapper body and a plurality of spaced perforations extend through the first and third panels of the wrapper body. Such a jar ticket has enhanced security. A jar ticket manufacturing machine for such a jar ticket is also disclosed.

Abstract: A pipe connector for attachment to a plain end pipe includes a housing (2) for location over the pipe end, an annular recess (4) formed in the inner surface of the housing, an inlet (10) for feeding a fluid under pressure into the recess, a sealing ring (6) in the recess, having at least three arcuate gripper elements (14) bonded thereto, the gripper elements having aligned recesses at the radially inward surfaces in which an O-ring seal (16) is mounted. After a pipe end is placed within the housing, fluid is pumped into the annular space (8) between the housing and seal ring (6), which pushes the seal ring and attached gripper elements radially inwardly to engage the pipe, the O-ring seal (16) forming a tight seal against the pipe. The plurality of gripper elements can conform to a pipe which is not perfectly round.

Abstract: A coupling for securing a plastic pipe. The coupling has a rigid hollow coupling shell with a passageway through it. A rigid stiffener tube is positioned internally of the shell, the stiffener tube having an external diameter slightly less than the internal diameter of the pipe. The stiffener tube has an external circumferential groove spaced from its outer end. A toroidal elastomeric seal is positioned within the stiffener tube circumferential groove. When a pipe end portion is inserted into the coupler shell, the stiffener tube extends telescopically within the interior of the pipe end portion and the seal engages the interior of the pipe to seal the interior of the pipe to the interior of the stiffener tube. A rigid gripper positioned within the coupler shell engages the exterior surface of the pipe and prevents the pipe from being extracted from the coupler shell.

Abstract: A coupling for securing a plastic pipe. The coupling has a rigid hollow coupling shell with a passageway through it. A rigid stiffener tube is positioned internally of the shell, the stiffener tube having an external diameter slightly less than the internal diameter of the pipe. The stiffener tube has an external circumferential groove spaced from its outer end. A toroidal elastomeric seal is positioned within the stiffener tube circumferential groove. When a pipe end portion is inserted into the coupler shell, the stiffener tube extends telescopically within the interior of the pipe end portion and the seal engages the interior of the pipe to seal the interior of the pipe to the interior of the stiffener tube. A rigid gripper positioned within the coupler shell engages the exterior surface of the pipe and prevents the pipe from being extracted from the coupler shell.

Abstract: A tubing joint having a long life span, in which stress concentration can be avoided even if external force from the tube repeatedly works on the ring claw. In the tubing joint of the present invention, the ring claw is formed into a zigzag shape with outer notch sections and inner notch sections. The ring claw has a plurality of outer ring sections, a plurality of inner ring sections, each of which is provided between adjacent outer ring sections, and a plurality of connecting sections, each of which connects an end of the inner ring section with an end of the outer ring section. The outer notch sections are substantially formed into a U-shape, and inner edges of adjacent connecting sections, which mutually face and form each U-shaped outer notch section, are arranged parallel and substantially perpendicular to the outer edge of the ring claw.