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: The disclosure relates to a tube coupling comprising a coupling body having a throughway open at one end to receive a tube, the diameter of the throughway increasing towards said open end at a first step to form a first enlarged diameter portion to receive a tube and at a second step to form a second, further enlarged diameter portion to receive a tube locking device to hold a tube in the coupling body. A thin wall sleeve has one end engageable in the throughway and the other end engageable in a tube to be located in the coupling body so that, in use, the sleeve extends from the tube passed the first step into the throughway. The end part of the tube in the throughway is engaged by a seal located in the throughway to prevent ingress of fluid between the sleeve and throughway.

Abstract: A coupling for releasably engaging a tubular member has a hollow body, in which the tubular member is received, and a sleeve which is movable axially within the hollow body. The sleeve is provided with an array of spacially separated holes and rotatable gripping members are located in these holes for selectively engaging the outer surface of the tubular member. During insertion of the tubular member into the hollow body, the rotatable gripping members move away from the outer surface of the tubular member. Movement of the tubular member in the opposite direction causes the rotatable gripping members to be cammed into contact with the surface of the tubular member.

Abstract: A tube coupling comprising a coupling body having a throughway open at one end to receive a tube extending into the throughway. A collet is located in the open end of the throughway for holding the tube in the throughway comprising an annular head located outside the throughway and having a plurality of arms extending into the throughway and terminating in enlarged heads. The inner side of the throughway and the outer side of the tube have parallel tapered cam surfaces which reduce towards the open end of the throughway and the collet heads have inner and outer faces which are parallel to one another and to the tapered cam surfaces and engage therewith such that the heads are subjected solely to compression in resisting withdrawal of the tube from the throughway.

Abstract: A quick connect coupling generally comprises a housing having an axial bore extending inwardly from an entrance and increasing in diameter moving into the housing. A tube has a tube bead of increased diameter spaced from an inner end of the tube and is insertable into the bore. A generally annular radially expandable collet disposed within the bore expands upon insertion of the tube and contracts onto the tube outwardly of the tube bead. The collet functions as a wedge between the tube bead and the increasing diameter portion of the housing, thereby retaining the tube within the housing. In one embodiment, a spring disposed within the housing biases the collet toward the entrance of the housing, ensuring proper position of the collet in extreme conditions. The inventive collet allows smaller tube bead diameters to be used.

Abstract: An apparatus for gripping a pipe comprises an outer member having at least one inclined inner surface and an inner member having an inclined outer surface, a tubular member having an opening to accommodate said inner member and a threaded part, and a threaded gear engaged with the threaded part of the tubular member. On rotation of the threaded gear the tubular member moves the inner member which co-operates with the outer member so that said inner member moves towards a pipe to be gripped. The apparatus is particularly useful for applying "non-marking" jaws to the outside of tubulars in the oil and gas industry.

Abstract: The invention pertains to a connection device (1) for the rapid and releasable connection of at least one synthetic pipeline (6), consisting of a housing portion (2) with at least one opening (4) for inserting the pipeline (6), as well as a clamp collar (8), arranged in the opening (4), which interacts with an inner cone (14) of the housing portion (2) via an outer cone (12) for the purpose of securing the pipeline (6). For the purpose of releasing the pipeline (6), the housing portion (2) is in two parts, consisting of a base portion (20) and an insertion portion (22), which is releasably connected with the same. The insertion portion (22) is connected with the base portion (20) via a positive snap connection (24).

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 seal arrangement in a resilient molded plastics body having a bore to receive a cylindrical component. The seal is formed by a plurality of resiliently flexible annular lips molded integrally with the bore at spaced locations along the bore and extending inwardly of the bore to seal with the surface of a cylindrical component (e.g. a tube) inserted in the bore. The lips are angled to extend both inwardly and along the bore in one direction to receive said cylindrical component and preferably three or more sealing lips are provided.

Abstract: This invention relates to a fixing device of the kind generally known as a cable gland for anchoring and sealing around a filamentary product such as an electrical cable. The device comprises a body, an annular cap, a clamping ring, and an elastomeric sealing sleeve. The body has a central bore extending its entire length, and is provided with a screw-threaded end portion. The annular cap includes an urging structure, and is threadably mountable on the screw-threaded end portion of the body. The clamping ring includes an annular base member upstanding from which extend a plurality of spaced apart gripping fingers. The sealing sleeve is adapted to be slidably received within the annulus of gripping fingers but to extend outwardly beyond the tips thereof. On insertion the free ends of the fingers slidably engage an inwardly tapered portion of the bore, and the urging structure can act to urge the free ends of the fingers into the tapered portion.

Abstract: An improved plastic push in tube fitting includes a plastic body, an elastomer o-ring for sealing, and a plastic collet. The collet and o-ring are disposed in the body such that a tube can be pushed into the body through the collet and o-ring and held against withdrawal from the body by the collet. The collet is formed entirely of plastic and has a plurality of circumferential sections for encircling a tube pushed into the body. Each of the circumferential sections has a radially inwardly facing circumferential tube gripper. The tube gripper is formed by a ramp which faces a tube being pushed into the body so that the collet will encounter the ramp and move the circumferential sections radially apart. The gripper also includes a circumferential surface which faces away from a tube being pushed into the body. The circumferential ramp and the circumferential surface form a gripper edge at their junction and this edge engages and holds a tube pushed into the body through the collet.

Abstract: A connecting joint for connection to a plastic tube comprising: a main body having proximal and distal ends with a flow passage and chamber between the ends in communication with each other. An engaging wall extends inwardly at the distal end defining a small diameter entry into the chamber, a support provided with a guard wall and resilient arms extending from the guard wall with projection walls on the terminal ends of the resilient arms having outwardly extending inclined surfaces and inwardly extending pawl walls is located in the chamber and a collar is secured in the chamber by the engaging walls. When the tube is inserted into the chamber, one of the guard wall, an annular friction ring or a seal located in the chamber engages the tube and as the tube is withdrawn the member engaging the tube moves the outwardly extending inclined surfaces into engagement with the collar thereby urging the pawls into engagement with the tube.

Abstract: A tube fitting includes a tubular body, an annular clamping member, a tubular inner pipe, a releasing member, and a sealing ring. The clamping member is disposed axially movably in an axial bore of the body, and includes a claw and an outer peripheral portion. The claw has an inclined surface projecting in a centripetal direction as the inclined surface extends away from an opening of the body, and engages with an outer peripheral surface of a tube fitted into the axial bore via the opening. The outer peripheral portion contacts with a regulatory surface of the body, and is pressed in a centripetal direction thereby, and accordingly presses the claw onto the outer peripheral surface of the tube. The inner pipe is disposed in the tube coaxially with an inner peripheral surface of the tube at an end of the tube. The releasing member includes a tubular base and a leading end. The base is disposed axially movably in the axial bore on an outer side with respect to the regulatory surface.

Abstract: An internal coiled tubing connector for connecting a first length of coiled tubing to a second length of coiled tubing includes a cylindrical body having a longitudinal bore therethrough and adapted to be inserted into the first length and the second length of coiled tubing; a by-pass passageway extending from a first opening in a longitudinal outer surface of the cylindrical body to a second opening in the longitudinal outer surface of the cylindrical body; and elastomeric seals mounted to the longitudinal outer surface of the cylindrical body adjacent the first opening and the second opening. When the first opening is placed in communication with a passageway within a wall of the first length of coiled tubing and when the second opening is placed in communication with a passageway within a wall of the second length of coiled tubing a communication by-pass is established across the connection of the first length and the second length of coiled tubing.

Abstract: A quick connect tube coupling is configured for use with unstepped bores in conventional fittings, valves, manifolds and similar devices. The coupling includes a tubular tube support which has structure thereon for positively coupling with a brass sleeve which is utilized to retain the coupling in the bore. The tubular tube support further includes a stepped portion which locates a primary O-ring seal for sealing directly with a tube connected by the coupling and a secondary O-ring seal which seals with the wall of the bore. In accordance with a preferred embodiment, the tube support is molded of plastic and is polygonal in cross-section.

Abstract: A duct coupler is disclosed for joining and sealing between adjacent sections of duct. The coupler includes a body, flexible cantilevered sections on the end of the body adapted to pass over annular protrusions on the duct and locking rings for locking the cantilevered flexible sections into position, so as to lock the coupler onto the duct.

Abstract: A pipeline connector apparatus comprising piston actuated means for gripping and sealing a pipe comprising a cylinder having an inner surface, the cylinder having a first groove for receiving a spring biased ring, a piston movable in the cylinder and actuating one of the gripping and sealing means, the piston having a second groove holding a spring biased ring. A plurality of compressible and relaxable spring biased rings are provided, each having an outer surface and a radius such that each will compress within the second groove and will expand within the first groove. The outer surfaces of the different rings have shoulders of different widths which allows the operator to control the piston stroke in the cylinder. The apparatus further comprises a means for predetermining and/or monitoring the displacement of the pistons.

Abstract: A pipeline connector and repair system for sealingly connecting the ends of first and second pipes together without welding or bolting. First and second connectors are provided at each end of a pipe joint and are inserted between the ends of the first and second pipes to be connected, the connectors are extended outwardly for enclosing the ends of the first and second pipes, and dual slip means and dual seal means in each of the connectors are hydraulically set for making the repair.

Abstract: A telescopic extensible rod, suited to be used as extension in agricultural pneumatic tools for picking fruit from trees or of cutting off branches of trees, is formed by two coaxial tubular elements, i.e. a first tubular element and a second tubular element that slides inside the first tubular element. A pneumatic actuator can be connected to the free end of the second tubular element. A coupling is mounted between the tubular elements to removably lock their reciprocal sliding. Two coaxial pipes, a first pipe and a second pipe, are located inside the tubular elements, the second pipe being designed to slide inside the first one while keeping the seal because of the presence of a sleeve mounted between the pipes and inside the first pipe. The free ends of the pipes are in fluid-dynamic connection respectively with a compressed fluid delivery and with the pneumatic actuator.

Abstract: There are disclosed several embodiments of an assembly for latching over and sealing about a casing joint having an enlarged diameter upper end so as to install a cementing head or other heavy equipment on the joint. The assembly includes a housing on which the equipment may be mounted and having a bore for lowering over the upper end of the casing joint to connect a bore in the equipment with the casing string. A latch ring is received in a recess in the bore for expansion to permit the upper end of the joint to be moved through and above it, and contraction beneath the lower side of the upper end, and a seal package is mounted in the recess above the ring to seal between the upper end of the casing joint and the recess.

Abstract: Mechanical constriction of pliable pipes, for example, annealed copper pipes or pipes of plastic, a corrugated fitting sleeve or connecting piece on, for example, a T-pipe, bend or equipment such as, for example, valves, takes place with the aid of a clamp coupling including an outer sleeve which is rotatable relative to an inner sleeve which is provided with a longitudinal slot. Mechanical joining of hard pipes, for example, of copper or steel, or attaching of such pipes to a connecting piece on a T-pipe, bend or equipment such as, for example, valves, is provided for with the aid of such a clamp coupling where the interior of the inner sleeve is provided with at least a pair of annular beads and a cylindrically shaped sealing gasket.

Abstract: A liquid tight connector for pass through cable, tubing or rods includes a body, a compression nut and a gland. There are fingers on the body with flats and triangular ends which cradle the gland and grasp cable, tubing or rods in a liquid tight manner tightly enough to provide strain relief. Spherical bumps with pawl like flats hold the compression nut free of the likelihood of loosening once engaged. The triangular configuration of the ends of the fingers enables improved strain relief and adapts to a large selection of cable, tubing or rod diameters.

Abstract: The present invention is a unitary pipe coupler having an internally mounted hollow tube stiffener which extends through the coupler. The stiffener serves as a guide over which ends of the pipes slide as the pipes are inserted into the coupler and provides communication within the coupler between the two pipes. As the pipes are inserted into the coupler, each pipe passes consecutively through an opening provided in the coupler, an O-ring, a plurality of rigid backward oriented gripper serrations provided on a gripper, a plurality of backward oriented flexible sealing serrations provided on a front boot seal, until the end of each pipe rests against a flexible boot seal which abuts a hub for mounting the stiffener to the coupler. The gripper serrations prevent the pipes from being pulled or pushed outwardly away from the coupler.

Abstract: A fluid coupling wherein a tubular coupling member has a first terminal sealingly engageable with an end of a first conduit and a second terminal sealing engageable with an end of a second conduit. The end of the second conduit has a radially outwardly extending retaining flange and the coupling member has a set of radially movable resilient arms which engage the flange when the second terminal is in proper engagement with the end of the second conduit. The arms can be prevented from becoming accidentally disengaged from the flange by one end portion of a sleeve which is reciprocable along and surrounds the coupling member. The sleeve can be releasably locked in a release position in which the arms are free to become disengaged from the flange and/or in a locking position in which the sleeve prevents disengagement of the arms from the flange.

Abstract: A metal fitting (11) for an end of a plain length of pipe (12) comprises a body (13) with flange means (14) adjacent a first end (15), a gland ring (16) adjacent the other end (17) of the body, a grip ring (18) between the body (13) and the gland ring (16), and screw fasteners (19) for urging the gland ring (16) towards the flange means (14); characterised in that:the body (13) has an integral outer tubular spigot (20) projecting towards the gland ring (16) and a co-axial integral inner tubular spigot (21) having a cylindrical outer surface (22) projecting beyond the free end (23) of the outer tubular spigot (20), the inside (24) of the outer spigot (20) being provided with a frustoconical portion (25) adjacent and converging from that free end;the gland ring (16) has its inside provided with a similar frustoconical portion (26) converging in the opposite direction;and the grip ring (18) is a split ring having external surfaces (27, 28) mating with the frustoconical portions in the body (13) and the gland rin

Abstract: A screw coupling whose constituents are made of a plastic material and which comprises a nipple having an externally threaded section and flexible prongs extending from one end of the externally threaded section. The coupling further comprises a nut which can be rotated to move into mesh with the externally threaded section and to thereby deform the prongs toward the axis of the nipple and hence toward the external surface of a cable, a hose or another body which extends through aligned axial passages of the nipple and nut. Each prong has an elongated wedge-like main portion and a clamping portion which is fast with the free end of the main portion and extends from the main portion in the direction of rotation of the nut to move it into mesh with the externally threaded section. The clamping portions overlie the main portions of the neighboring prongs. The main portions of neighboring prongs are separated from each other by wedge-like slots. It is presently preferred to employ a set of identical prongs.

Abstract: A well connector connectable to the outside of coil tubing for coupling the tubing to another member. The connector includes a tubular body externally enclosing the end of the coil tubing and a second end for connection to another member. A slip housing is threadably connected to the first end of the body and encloses slips between the body and the housing for gripping the outside of coil tubing. The body includes a thermally compensated packing element and a threaded actuation energizer is provided threadably engaging the body, separate from the slip actuation, for energizing the packer element into a seating engagement with the exterior of the coiled tubing.

Abstract: A coupling assembly for use in connecting one end of a first tubular member to a component of a piping system includes a receiving tubular member defining an opening adapted to receive the first tubular member, the receiving tubular member having an inner portion defining an inner bore dimensioned to receive the one end and an outer portion defining an internal annular cavity intersecting the inner bore and projecting radially outwardly therefrom, the annular cavity comprising an annular wall portion tapered radially inwardly and projecting longitudinally toward the opening. Also included in the assembly is an annular seal member and a lock ring both disposed in the annular cavity between the first tubular member and the receiving tubular member, the lock ring having an outer circumferential surface portion adapted to engage said tapered wall portion and an inner circumferential surface portion adapted to engage an external wall portion of the first tubular member.

Abstract: A well assembly utilizes a casing tensioning system that allows a preselected amount of stretch to be applied in the casing. The assembly includes a tubular mandrel that secures to the upper end of the string of casing. A load ring has internal grooves that mate with exterior grooves on the mandrel, the load ring being of a ratcheting type. A retainer will latch the load ring in the wellhead housing. A positioning ring mounts to an upper portion of the mandrel to position the load ring at a desired distance above a stop shoulder on the lower portion of the mandrel and the load ring. During tensioning, the load ring remains stationary in the wellhead housing as the mandrel is pulled upward until the stop shoulder contacts the load ring.

Abstract: A ratchet-type spoolable connector for coupling coiled tubing to tools or other coiled tubing. A mandrel is engaged by a ratchet to the inside of a body and slips abut the end of the body and engage the mandrel. The alternate application of tension and compression across the connector ratchets the mandrel into wedging engagement with the slips for gripping the coiled tubing.

Abstract: A connector for connecting a tubular starter head to a casing of a well allows connection without special tools. The tubular head has an annular recess extending upward from its lower end. The connector includes a seal actuating ring and a slips actuating ring, one of the rings having a recess. A seal ring locates in one of the recesses and slips locate in the other recess. Upward movement of one of the actuating rings sets either the slips or the seal ring first while the other remains unset. Then upward movement of the other actuating ring sets the other.

Abstract: A socket joint for ductile cast iron pipes is locked by toothed locking ring inserts 15 and a counter-flange 11. At least one elastic lip 19 is inserted between the locking ring and the rear face of a rigid stop ring which encloses the smooth or male end of the pipe 1.

Abstract: A syringe tip is connected to a syringe head by an assembly that permits quick detachment and replacement of syringe tips without the use of tools. The assembly is adjustable for permitting or restricting rotation of syringe tip.

Abstract: A pipe connector includes an externally threaded connecting tube having an annular flange around the inside wall thereof on the middle, two pipes respectively inserted into the connecting tube and stopped against the annular flange at two opposite ends, two locknuts respectively threaded onto the connecting tube at two opposite ends to squeeze two tapered split ring against the pipes causing them to be locked in place, and two water seal rings respectively stopped between the connecting tube and the tapered split rings to seal the gaps.

Abstract: An internal slip-type connector for coupling coiled tubing to tools or other coiled tubing having a body that does not upset the outside diameter of the coiled tubing with seal means to seal to the inside of the coiled tubing. A mandrel is threadably engaged to the inside of the end of the body and slip means abuts the first end of the body and engages the mandrel. Rotation of the body relative to the mandrel wedges the slip means into the inside of the coiled tubing for gripping.

Abstract: A fastening device in the shape of an outer clamping sleeve member with an internal thread, and an inner clamping sleeve member with an external thread, said clamping sleeve members being mutually rotatable. One or both of the clamping sleeve members may be provided with an axial through slot or may have mutually parallel, axially extending and partly overlapping slots. The threads of the clamping sleeve members may be a cylindrical or a conical shape. A central sleeve may be provided between the outer and inner clamping sleeve members for cooperation with same. Wrench mounts are provided on the device, such as teeth and slots, and a complementary securing tool may be inserted to engage the teeth and slots for mutual turning of the clamping sleeve members. The device can be used, e.g., to mount a shaft to a wheel-hub, to connect pipe ends, or as a non-threaded nut.

Abstract: A quick connect coupling for connecting a tube to a body having a stepped bore formed therethrough. The coupling includes a sleeve which is press fit in the bore. The inner surface of the sleeve has a cylindrical portion, a radially outwardly extending frusto-conical portion, and an internal shoulder defined therebetween. A collet is disposed within the sleeve having a boss portion which is slightly smaller than the inner diameter of the cylindrical portion of the sleeve. The boss portion supports and guides the collet for co-axial movement relative to the sleeve. The collet further includes an enlarged end portion having an external shoulder and a frusto-conical surface. The frusto-conical collet surface is disposed within the frusto-conical sleeve surface. The tube is inserted within the coupling within the collet. When it is attempted to move the tube out of the body, the frusto-conical collet surface engages the frusto-conical sleeve surface.

Abstract: A connector fitting of the cantilever camming and clamping type having a ferrule secured in the main body bore thereof, the ferrule having an end received in one end of a tubular, usually plastic, member as the tubular member is installed. The ferrule provides radial force backup preventing collapse of the tubular member. It seals with the bore of the main body and with the tubular member. The cap bolt part of the fitting may have a tapered or a straight inner surface arranged to engage the outer wall of the tubular member in gripping relation.

Abstract: An emergency casing hanger can be lowered over casing collars and into a wellhead housing to support a string of casing. The casing hanger has a slip bowl which is slotted so that it can be radially expanded to insert over the casing collar. Slips are carried in the interior of the bowl for gripping the casing once the slip bowl is in position. The running tool has an inner sleeve that holds the slips in a retracted position and holds the slip bowl in an expanded position until the slip bowl clears the collar. Once the running tool has been removed, a honing tool is then lowered over the casing. The honing tool has honing stones mounted in a housing and biased inward for smoothing the exterior of the casing to receive a seal.

Abstract: A valve construction comprising a molded body including a plurality of body sections each having a generally flat inner surface. The flat surfaces of the body sections are disposed in contiguous relation along an interface. Each surface has a plurality of recesses that mate with complementary recesses in the surface of the other body section to form compartments in the assembled body, and operating components, such as valves, are located in the compartments. The movable elements of the operating components move in a direction parallel to the plane of the interface. Each surface also has a plurality of channel portions mating with complementary channel portions in the other surface to form channels that interconnect the compartments. Each surface also includes a plurality of port sections which mate with port sections in the other surface to form ports which establish communication between the channels and the exterior of the body.

Abstract: An anti-extrusion apparatus for a seal sealing on the outside diameter of a conduit. The anti-extrusion device is positioned at each end of the seal and includes a metal ring engaging an end of the seal in which the ring has a wedge shaped inside. A plurality of arcuate ring segments form a close ring having inner diameter equal to the outside diameter of the conduit. The segments have a wedge shaped outside coacting with the metal ring and are wedged inwardly against the conduit prior to compression of the seal for reducing extrusion of the seal as it is compressed.

Abstract: A transition coupling for connecting a plastic natural gas supply pipe to a metal service pipe is comprised of substantially plastic components including a tubular non-metallic body and a non-metallic or plastic nut. A plastic nut is threadably connected to the body one at each end thereof for independently compressing seals within the body against the two pipes and separately gripping against the pipes to hold the pipes within the body. At one end of the coupling, a plastic gripper is wedged by the plastic nut to embed in the plastic pipe to anchor the plastic pipe in the coupling. At the other end of the coupling, a metallic gripper is used in conjunction with the other plastic nut to be wedged against and embed in the outside surface of the metal pipe. The metallic gripper is comprised of two segments, the outer surfaces of which are shaped to keep from embedding in the inside surface of the plastic nut and causing the nut to bind on the metallic gripper.

Abstract: A connection device for fluid conduits. An annular gripper member is arranged in a housing and has an axially sliding actuating part, on which a plurality of clamping elements are provided and between the clamping elements and the actuating part there are bending regions which allow rocking of the clamping elements. Each clamping element has a radially projecting pressing part which axially opposes a support surface on the housing. If a conduit is to be released which is held in the annular gripper member, an external thrust is exerted on the annular gripper member to cause the clamping elements to be rocked into a releasing position relative to the conduit.

Abstract: A connector for connecting a tubular starter head to a casing of a well allows connection without special tools. The tubular head has an annular recess extending upward from its lower end. The connector includes a seal actuating ring and a slips actuating ring, one of the rings having a recess. A seal ring locates in one of the recesses and slips locate in the other recess. Upward movement of one of the actuating rings sets either the slips or the seal ring first while the other remains unset. Then upward movement of the other actuating ring sets the other.

Abstract: A three-part, re-usable coupling for making a sanitary connection to a flexible hose is disclosed which includes a coupling body of corrosion-resistant material having a central channel for laminar flow. At one end of the central bore, the coupling body is provided with a standard sanitary conduit flange-face. At the other end the coupling body is provided with a notched, substantially cylindrical barb for insertion into the lumen of the flexible hose. An externally threaded section lies between the two ends of the coupling body. A split collar or sleeve which is at least as long as the barb has an externally tapered surface and a cylindrical, internal, threaded surface applies uniform compression to the end-portion of the flexible hose through which the barb is inserted. A nut having an internal taper that matches the external taper of the split collar makes up on the external threads of the coupling body urging the split collar to firmly secure the hose to the barb.

Abstract: An improved releasable coupling for a tube is disclosed. The coupling contains a socket with at least four stepped bores. Located within the first bore is a compresion means (such as a collar) which has an inner surface inclined to the axis of first bore. A collet is mounted within the compression means and is so configured that, when the collet is caused to move inwardly, the inclined surface of the compression means causes the jaws of the collet to move inwardly. The coupling also contains a tube support located within the second bore. At least four sealing means are disposed within the third bore: a first O-ring is contiguous with a first washer, which in turn is contiguous with a second O-ring, which in turn is contiguous with a second washer.

Abstract: A pipe joint for connecting pipes for passing a variety of fluid such as liquid or gas has been improved and has a pipe slipout preventive mechanism. In structure, the main body of the pipe joint is formed by coupling a nipple and a socket. An insert to be fitted externally by a pipe to be connected is installed slidably to the nipple. A collet for tightening the pipe is installed outside the insert with a proper spacing thereto. And the socket has a tapered part which is diminishing in diameter toward the pipe insertion port. A stopping member engages with and stops at the tapered part of the socket is provided outside of the insert.

Abstract: A connector for connecting tubing to a component in a downhole well completion system in which a sub is provided for connection to the component and a sleeve extends over a portion of the sub to define a mandrel for receiving the tubing. A plurality of locking slips extend in windows provided through the sub and are forced into locking engagement with the reeled tubing as the sleeve is advanced over the sub to transfer axial and torsional loads from the component to the tubing.

Abstract: A hose fitting comprising a first cylindrical member having a small diameter bore portion and a large diameter bore portion connected to the small diameter bore portion, a second cylindrical member axially slidable within the large diameter bore portion and having a radial flange portion and an axial tubular portion extending from the radial flange portion, a sleeve provided within the large diameter bore portion and having an inclined surface, a collet provided between the second cylindrical member and the sleeve and having an outer surface engageable with the inclined surface of the sleeve, the collet being further formed at its inner circumferential portion with an inner circumferential edge, the inner circumferential edge being adapted to bite on the hose when no internal fluid pressure is applied within the small diameter bore portion and when the hose is pulled out axially outwardly, the hose being firmly fixed between the collet and the second cylindrical member by axial outward movement of the collet

Abstract: A hose fitting for sealed connection to a hose, comprising: a first cylindrical member having a small diameter bore portion and a large diameter bore portion connected to the small diameter bore portion; a second cylindrical member axially slidable within the large diameter bore portion and having a radial flange portion and an axial tubular portion extending from the radial flange portion, the radial flange portion being provided with a sealing member and the axial tubular portion being provided with a sealing member; a sleeve provided within the large diameter bore portion and having an inclined surface; a collet provided within the large diameter bore portion and having an outer surface engageable with the inclined surface of the sleeve and radially constrictible when moving axially within the sleeve, the hose being firmly fixed between the collet and the axial tubular portion of the second cylindrical member by axial outward movement of the collet; and a stop member received in the large diameter bore por