Abstract: A hose construction, coupling unit and system therefor and methods of making the same are provided, the hose construction comprising a flexible hose having opposed ends, a tubular member having opposed ends one end of which is carried by one of the ends of the hose and the other end of which extends outboard of the one end of the hose, and an annular coupling unit rotatably carried on the other end of the tubular member outboard of the one end of the hose, the coupling unit having an externally threaded portion for threadedly connecting with an internally threaded coupling device, the coupling unit having an annular portion provided with a tool gripping external peripheral surface for rotating the coupling unit on the tubular member in order to threadedly interconnect the threaded portion with the coupling device, the annular portion being a part that is separate from the threaded portion so as to be adapted to be rotated relative thereto to tend to prevent unthreading of the threaded portion from the couplin

Abstract: A duct joining system having two L-shaped connectors for each duct corner. Each connector has two substantially perpendicular legs forming a corner region and has an inside and an outside surface with the outside surface of one L-shaped connector abutting the outside surface of the other L-shaped connector when the ducts are joined. An irregularly shaped opening is formed in the corner region of each L-shaped connector in alignment with the opening in the abutting connector. A tab having an enlarged head and a stem is integrally formed with and extends inwardly from the peripheral edge of each of the openings. A score line is formed at the base of the stem of each tab on the outside surface of the connector to allow the tab to be bent outwardly about the score line so that the tab can be inserted through the opening in the abutting L-shaped connector and than bent over to lock the connectors together.

Abstract: A fluid connector system comprising a housing having a fluid port; a cartridge permanently insertable in the fluid port; a conduit detachably insertable in the cartridge; the cartridge comprising a housing insertable in the fluid port and having an opening therethrough communicable with the fluid port, a first O-ring mounted thereon and disposable in sealing engagement with the housing, the cartridge housing being securable within the housing when the cartridge is inserted in the fluid port, a bushing and at least one O-ring disposed in the cartridge opening and disposable in sealing engagement with the conduit, and a retainer disposed in the opening and cooperable with the conduit for detachably securing the conduit in the cartridge in a coupling condition therewith when the conduit is inserted in the opening; and a release member mounted in the cartridge housing and cooperable with the retainer for releasing the conduit to allow it to be removed from the cartridge into an upcoupling condition.

Abstract: A pipe coupler is designed such that a sealing ring (5), an annular chuck (6) and a release ring (4) are inserted into a mounting recess (2) of a coupler main body (1). Annular reaction surfaces (601, 602) are provided at the tip side of the annular chuck (6), and an action surface (301) for contrating the diameter is provided at the internal periphery of the mounting recess (2). Claws (603) are formed at the tip of the annular chuck (6), and a slit (604) is provided in the annular chuck (6) for permitting enlargement and contraction of the chuck's diameter. When a flexible tube (7) is inserted into the mounting recess (2), the diameter of the annular chuck (6) is enlarged. In this condition, when a compressed fluid is supplied, the claws (603) bite the flexible tube (7). As the release ring (4) is pressed into the mounting recess (2), the engagement of the claws (603 ) with the flexible tube (7) is released.

Abstract: A telescopic pipe arrangement for use in situations where neither end can be rotated to change the length. An inner nut on an inner pipe bears against an end of an outer pipe and an outer nut either locks against the inner nut to enable inward or outward movement or locks against the outer pipe to lock the arrangement.

Abstract: An arrangement for radially expanding a tubular gasket includes a sliding sleeve and a compression sleeve. The sliding sleeve is formed of a thin membrane of relatively rigid material, such as nylon, hypalon or polyester. The sliding sleeve is positioned adjacent an inner surface of that portion of the tubular gasket to be expanded. The compression sleeve is disposed immediately adjacent the sliding sleeve such that the sliding sleeve serves as a slip plate for the compression sleeve when the sleeves are expanded against the inner surface of the tubular gasket. The sliding sleeve may be attached to or integrally molded into the inner surface of the tubular gasket. Another aspect of the invention involves forming the compression sleeve so as to allow it to be locked in any one of a plurality of expanded positions.

Abstract: An improved pipe branch fitting for use with a pipe having a pre-cut hole is disclosed. The branch fitting has a cylindrical body freely slidable along the pipe to a point where the hole is pre-cut. On one side, the cylindrical body carries an internally threaded boss into which a modified sprinkler head may be threaded. A gasket positioned between the sprinkler head and the pipe gives the seal as the sprinkler head bears upon the gasket upon tightening of the sprinkler head. The inner end of the modified sprinkler head has a stepped shoulder which abuts the periphery of the hole in the pipe and limits compression applied to the gasket. A reduced diameter end portion of the modified sprinkler head locates itself in the hole and indicates if the fitting is misaligned with the hole. The end walls of the body are each tapered toward the boss to facilitate the sliding of the cylindrical body, when assembled on the pipe are supporting structures of a building in which the piping system is being installed.

Abstract: An oil well tubing joint coated with a carbide blast coating provides an elongated, hollow tubing section having an open ended continuous cylindrical internal bore and a continuous carbide coating over substantially all of the tubing section outer surface. An internally threaded connection portion of the bore at a first end of the tubing section is provided with an externally threaded connection member being positioned at the second end of the tool bore. The tubing section has a larger constant external diameter that extends over a majority of its length and three reduced external diameter portions that extend a distance from each end of the tubing, including one reduced diameter portion adjacent one end of the tubing joint and two of the reduced diameter portions being adjacent the second end of the tubing joint.

Abstract: The present invention is a hydraulic coupling and method of making the same. The coupling includes a male fitting, a female port, and a lock nut. The male fitting has external threads which receive the female port and the lock nut. The female port has an internal tapered recess for mating with an external tapered surface of the skirt of the lock nut. The skirt portion has inner and outer sections which initially form a double angle on the exterior surface. The outer section is bent inwardly to form a tapered external surface forming a steeper internal angle with the male fitting. An O-ring is positioned about the male fitting for sealing the hydraulic coupling within the tapered recess. The fitting of the present invention is also adaptable to the O.R.S. fitting and the S.A.E. flange fitting. A tapered surface of the female port engages an O-ring positioned in an annular groove of the male fitting.

Abstract: A tube coupling and combination retainer and disassembly tool includes a first tube having a first end portion for telescopically receiving a second tube therein and a second tube having a second end portion including a structure for telescopically engaging the first end portion and a first fastening device for securing the first and second end portions to each other. A tube coupling and retainer according to the present invention further includes a second fastening structure for selectively securing the first and second end portions to each other and for disengaging the first fastening structure upon demand.

Abstract: Apparatus for connecting a conduit to an equipment opening having damaged female threads includes a body, an annular packing ring and a packing follower. The packing ring is formed of an extrudable, non-resilient packing material. The body and the packing follower are threaded to engage the female threads of the equipment opening. The packing ring is compressed and extruded into the damaged threads by relative rotation of the body and packing follower.

Abstract: A coupling for joining first and second channels in fluid communication includes a tubular housing having a first section including a wear surface, and a second section for being removably joined in fluid communication with the second channel. A first fitting includes a flange for being joined in fluid communication with the first channel, and an integral piston including a piston ring disposed in contact with the wear surface for forming a seal therewith. Differential movement between the housing and the piston is accommodated while maintaining a seal with the piston ring.

Abstract: A rotational power coupling consists of drive shaft couplings and stationary housings within which the shafts rotate. One housing has a flange with external threads; the other has a plain flange. A threaded nut engages the threaded flange and draws the two flanges together, locking the housings. The nut is surrounded by a collar which can rotate about it. A handle extends from the collar. The nut has external teeth, and the collar has oppositely directed pawls. When the pawls engage the teeth, the handle may be used to turn the collar.

Abstract: A telescoping joint for connecting casing between a subsea housing and a surface wellhead can be reenergized. The telescoping joint includes an upper conduit section and a lower conduit section that telescopingly insert within one another. A seal locates in an annular space between the two conduit sections. A torque nut secures between the upper and lower conduit sections. The torque nut bears against the seal. The torque nut has a slot in its bore that is engaged by a running tool lowered from a drilling vessel at the surface. The running tool rotates the torque nut to energize the seal. A ratcheting lock ring locks the telescoping joint against withdrawing movement.

Abstract: A tube union for coupling the ends of a pair of tubes which are butted together includes a sleeve and two swaging collars about the sleeve without other components. Grooves and lands in the sleeve mate with a tube which is deformed into the grooves as the sleeve is urged inwardly under compression. The rings are urged centrally towards the central position of the sleeve by a tool constituted by two housing members which each have several components. Torsional wrenching of the housing members screws the housing members together, causing the collars to deform the sleeve. Thereafter pins are removed from the one housing members and the wrench from the other. This permits separation of the housing members from the swaging collars. The tool can effect connection or assembly of different elements.

Abstract: A rapid connection fluid coupling includes first and second end pieces. The first end piece is adapted for fitting to a duct or the like such as in the cooling liquid circuit of a motor vehicle engine. The first end piece includes a closure or seal coaxially positioned therein for sealing the flow path through the first end piece when the second piece is not connected thereto. A perforator is supported by the first end piece and positioned in the fluid passageway of the first end piece for perforating the closure when the second end piece is interconnected to the first end piece.

Abstract: A hose construction, coupling unit and system therefor and methods of making the same are provided, the hose construction comprising a flexible hose having opposed ends, a tubular member having opposed ends one end of which is carried by one of the ends of the hose and other end of which extends outboard of the one end of the hose, and an annular coupling unit rotatably carried on the other end of the tubular member outboard of the one end of the hose, the coupling unit having an externally threaded portion for threadedly connecting with an internally threaded coupling device, the coupling unit having an annular portion provided with a tool gripping external peripheral surface for rotating the coupling unit on the tubular member in order to threadedly interconnect the threaded portion with the coupling device, the annular portion being a part that is separate from the threaded portion so as to be adapted to be rotated relative thereto to tend to prevent unthreading of the threaded portion from the coupling de

Abstract: A duct joining system having two L-shaped connectors for each duct corner. Each connector has two substantially perpendicular legs forming a corner region and has an inside and an outside surface with the outside surface of one L-shaped connector abutting the outside surface of the other L-shaped connector when the ducts are joined. A orifice is formed in the corner region of each L-shaped connector in alignment with the orifice in the aubutting connector. A cleat is integrally formed with and extends inwardly from the peripheral edge of each of the orifices. A score line is formed at the base of each cleat on the outside surface of the connector to allow the cleat to be bent outwardly about the score line so as to extend through, and over the peripheral edge of, the orifice in the abutting L-shaped connector to lock the connectors together.

Abstract: A relatively resilient hose end telescoped over a relatively rigid tube end wherein a first axial zone of the tube end has an exterior rib with a circumferentially continuous radially outermost edge and a second axial zone of the tube end proximal to the first axial zone has circumferentially extending beveled exterior retention ribs, the hose end has a third axial zone which contains circumferentially extending beveled interior retention ribs complementary to those of the second axial zone, the exterior retention ribs and the interior retention ribs coact to resist axial separation of the hose end from the tube end with greater resistance than that encountered during telescoping of the hose end over the tube end, the hose end has a fourth axial zone proximal to the third axial zone and a fifth axial zone proximal to the fourth axial zone, the fourth axial zone has a nominal wall thickness less than those of the immediately contiguous portions of the third and fifth axial zones, and the fourth axial zone is s

Abstract: A fluid connector system including a modified plumbing union having a rotatable member for drawing said union into a fluid tight condition. A drive tool is electric motor actuated and includes a reduction gear train providing an output gear engaging an integral peripheral spur gear on the rotatable member. A housing member attached to the connector assembly provides coaxial alignment for an interface socket on the drive tool. A hand lever actuated latching system includes a plurality of circumferentially spaced latching balls selectively wedged against the housing member attached to the connector assembly or to secure the drive tool to the connector assembly with its output gear in mesh with the integral peripheral spur gear. The drive motor is torque, spped and direction controllable.

Abstract: An expansion band having a spanning member whose free end is provided with a locking tab for cooperation with a locking surface having a plurality of selectable locking slots. A guide channel secured to the band cooperates with the band to define a guideway through which the spanning member extends thereby maintaining the spanning member and hence the free ends of the expansion band in alignment. During expansion of the expansion band the locking tab is free to snap out of each locking slot and into the next. Upon release of the expansion forces, however, the locking tab is prevented from snapping out of the locking slot in which it is presently inserted. A novel expansion unit comprised of a manual hydraulic pump operates a duck-bill type spreader which bears against associated bearing surfaces respectively provided on one end of the spanning member and one end of the guide channel to apply direct expansion forces to the expansion band.

Abstract: A screwed pipe joint with a bell for connecting two pipes of a drill pipe string.

Abstract: A flareless fitting includes a coupling body, a coupling nut and a ferrule. A tube is inserted so that it may extend axially inwardly a variable insertion length beyond the ferrule, through the length of a counterbore which is slip fit about the tube. Tightening of the coupling nut and the tapered arrangement causes the ferrule to be sealed between the tube outer wall and the internal cylindrical surface of the coupling body. Specifically, a single tube fitting system is provided which offers substantial tube penetration, or shallow tube penetration, without using two different kinds of fittings.

Abstract: The invention comprises a metal push-in tube fitting and a release tool. The metal tube fitting includes a body with a tube-receiving cavity in one end. A tube support forms the inside of the cavity and supports the tube against inward movement. A gripper ring having a radially inner gripping edge is disposed in the cavity and grips a tube inserted in the cavity through the ring. A retainer holds the gripper ring in the body of the tube fitting. A release tool is provided for releasing a tube which is held by the gripper ring of the fitting. The release tool has a thin, cylindrical section portion which can be received about a tube held in the fitting and then inserted in the fitting to raise the gripper and release the tube.

Abstract: A beverage container having a spigot with a faucet for dispensing beverages. The spigot is removably secured within the walls of the beverage container by a hex nut having exterior protuberances or nibs. The faucet is removably secured to the spigot outside of the beverage container by a winged connector backed by a spring clip for removably securing the spigot to the faucet. The winged connector is used as a key for engaging the nibs or protuberances of the securement nut for causing it to turn and be tightened or loosened from the threads of the spigot, thereby allowing the removal of the spigot from the beverage container.

Abstract: An adapter fitting made of two parts, a mounting member containing a fluid cavity and a flange member having bolt holes therein, is designed to enable fluid flow components of the type which can be bolted together and provide sealing at mating faces to be used with threaded connections and bolt-on flange connections.

Abstract: A coupling having one end attached to a drop pipe of a fire sprinkler system and another end for attachment to a tool subsequent to initially testing the sprinkler system and to a sprinkler head thereafter. The coupling includes an internal frangible closure member to prevent flow of fluid from the drop pipe during the test phase so that the sprinkler may be pre-tested prior to attachment of the sprinkler head. The tool includes an external housing which after completion of the test phase is connected to the coupling, a ram being mounted within the housing and adjustable to position and impact member at the end of the ram at or in abutment with the frangible closure member. The ram is connected to a propelling assembly which permits the ram to be pulled manually against the biasing force of a spring away from the closure member, and upon release of the ram, the ram is propelled toward the closure member so that the impact member shatters the closure member to open communication through the coupling.

Abstract: A durable blast joint using a protective sheath of erosion resistant rings arranged in overlapping stacks so as to provide a vertically continuous protective sheath for the full length of the blast joint. The blast joint provides durable structural surfaces suitable for gripping with power tools and has a pressure operated hydrostatic driver for maintaining a tight fit between a continuous series of erosion resistant rings. The blast joint is also adaptable to be installed in a pressurized well, using a snubber unit.

Abstract: A pipeline coupling comprises first and second substantially annular connecting pieces at each end of a length of pipe, an internally threaded nut on the first connecting piece and a corresponding external thread on the second connecting piece, and a sealing ring for location between adjacent ends of two lengths of pipe to be connected, a sealed connection between the two lengths of pipe being effected by screwing the nut onto the external thread to draw the connecting pieces axially towards one another and to compress the sealing ring therebetween. A substantially annular locking ring is mounted on the second connecting piece to be axially movable therealong but rotatably fixed relative thereto, the locking ring and nut being provided with corresponding projections and recesses adapted to engage with one another to prevent relative rotation between the two connecting pieces, releasable means retaining the projections and the recesses in engagement with one another.

Abstract: An adapter fitting made of two parts, a mounting member containing a fluid cavity and a flange member having bolt holes therein, is designed to enable fluid flow components of the type which can be bolted together and provide sealing at mating faces to be used with threaded connections and bolt-on flange connections.

Abstract: An adapter fitting made of two parts, a mounting member containing a fluid cavity and a flange member having bolt holes therein, is designed to enable fluid flow components of the type which can be bolted together and provide sealing at mating faces to be used with threaded connections and bolt-on flange connections.

Abstract: A workstation within a containment cell is provided with a services-supply module or unit by means of which a range of services such as electrical power, hydraulics, pneumatics etc are made available for in-cell use. The services are provided by means of a number of replaceable and exchangeable services-connection cartridges which sealingly engage in the unit and provide continuity between out-of-cell supply lines connectible to adaptors and in-cell supply lines connectible to adaptors. The cartridges are replaceable without breaking cell containment conditions with the aid of a tool (by which a replacement cartridge is fed forwardly to displace in nose to tail relationship the cartridge to be replaced.

Abstract: There is disclosed an offshore well installation wherein a shoulder of a casing hanger body supported within a casing head on a platform at the water surface has been lowered onto a seat in the head so as to support a casing string anchored at its lower end to a mudline hanger in tension, the lower end of the hanger body being connected to the upper end of the string by an adjustable sub which is manpulated by a tool lowered through the hanger body and into the sub so as to adjust it from an extended position in which its shoulder is above the seat in the head to a retracted position in which the shoulder is seated on the head and the casing string is placed in tension.

Abstract: A connector including a male member and a female member adapted to mate therewith. The female member is hollow and has an annulus defining a plane substantially perpendicular to its axis. There is a substantially cylindrical hollow nozzle within the annulus and the nozzle has an outer diameter smaller than the inner diameter of the annulus, thus defining a space therebetween. A hollow portion extends away from the male member and is being substantially coaxial with the nozzle. The male member is generally cylindrical and hollow. It is provided with a collar having an outer diameter smaller than the inner diameter of the annulus and an inner diameter larger than the outer diameter of the nozzle, whereby the collar occupies the space. The male and female members, when connected, form a passage for flow of fluids therethrough.

Abstract: An improved connector has a flexible braided metal hose assembly with a compression fitting or pipe fitting at one end and a special composite fitting assembly with an electrically insulating insert in a metal male outer fitting at the other end for connection to the water line of an appliance, such as a hot water heater.

Abstract: A torque tool and mating profile allow large diameter conductor pipe to easily be retrieved from a subsea well. The profile will be located near the sea floor immediately above a left-hand threaded connector joint. The profile has a lifting shoulder and a torque key. The torque tool lowers through the conductor pipe from the drill rig on drill pipe. It has spring biased dogs that spring outward into the profile. The dogs have lifting surfaces for lifting the conductor string at the lifting shoulder at the profile. Rotating the torque tool causes it to engage the torque key to break out the connector joint.

Abstract: The present invention includes a system and a method for attaching the end of a tube of a plastically deformable material such as titanium to a hard metal fitting in a manner that can provide the resulting tube joint with increased strength and fatigue resistance. In the method the tube and fitting are assembled by inserting the tube into the end of a bore in the fitting. A radial force is exerted against a predetermined axial length of the tube wall, and thus also against the fitting, to plastically deform the tube wall radially into plural, axially spaced, circumferential grooves in the fitting bore. While this radial force is being exerted, a die restrains the fitting, causing it to deform elastically more near the end of the fitting bore than near the end of the tube. In the resulting tube joint the fitting applies residual circumferential stresses to the tube that are larger near the end of the fitting bore, and this stress distribution increases the fatigue resistance of the tube joint.

Abstract: A tieback system for a subsea well utilizes a tieback connector. The tieback connector has a body that lands on a wellhead housing located on a sea floor. A funnel extends downward from the body for sliding over the wellhead housing. A lockdown sub is carried by the body and has a set of tapered threads on its exterior. A lock ring is carried by the lockdown sub. The lock ring has an exterior profile for engaging an internal groove formed in the wellhead housing. Rotating the lockdown sub moves it downward from a recessed position to a locking position. In that position, the rotation causes makeup to the threads and causes the lock ring profile to tightly engage the groove in the wellhead housing.

Abstract: A bulk material container comprising a flexible liner with a bottom outlet fitting. The bottom outlet fitting of the flexible liner is inserted by means of an installing tool into a bottom opening of the shell of the container. The bottom outlet fitting has a substantially square internal pocket shape that is adapted for receiving fingers of the insertion tool for installation in the shell.

Abstract: A sealing joint for use in a conduit system where an elevated pressure may exist at one side of the system comprises a pair of co-axial tubular metal sections with intermesting tapered edges which are clamped against each other by fastening means, such as a swivel nut, so as to establish a fluid tight seal formed by the conical contact area between the tapered surfaces of said edges.One of the tubular sections has a tapered edge which is at one side thereof exposed to the elevated pressure. This section has a smaller wall thickness than the tapered edge of the other tubular section so as to allow the elevated pressure to press said tapered edges onto each other.

Abstract: A pre-assembly muff (12; 12a) for fitting a cutting or clamping ring (3) of a pipe coupling. Conventional muffs have a problem in that in service their dimensions change so that an accurate ring assembly ensuring accurate functioning is no longer possible. Only by checking the dimensions of the inner cone (13) of the pre-assembly muff is it possible to determine whether the end of the service life has been reached. The muff according to the invention has a wear resistant coating applied to its inner cone (13). The coating has a color which differs from that of the base material. If due to frequent use the colored coating is removed, the base material shines through. This is a sign for the user indicating that the end of the service life of the pre-assembly muff has been reached.

Abstract: In a hose fitting fixing construction according to this invention, an engagement member having restoring force of gravity or elastic force is disposed in an engagement space of a bracket. The engagement member engages with an engagement dent of a hose fitting flange inserted into the engagement space, thereby engaging the hose fitting flange with the bracket. A detachment hole may be provided on the bracket to enable easy detachment of the hose fitting flange from the bracket. A detachment jig is inserted into the detachment hole to deform the engagement member against the restoring force and disengage the engagement member from the engagement dent of the hose fitting flange, thereby enabling to detach the hose fitting flange from the engagement space. Accordingly, the hose fitting flange can be installed to the bracket by snap-action even in a limited work space, and detached with ease.

Abstract: A quick detach bit apparatus includes a wear sleeve having a chuck threaded thereinto. A bit is mounted within the chuck. The bit and chuck are interconnected by mating, axially extending splines and grooves. The chuck includes a resiliently mounted segment urged into engagement with the bit. A quick release tool is accommodated in a passage between the bit and chuck. The tool is inserted into the passage and has a thickness sufficient to urge the segment out of engagement with the bit so that the bit is removed from the chuck.

Abstract: A bolted pipe joint releasable by remote control includes two flanges each eing disposed at a respective one of two pipe ends. A centering aid cooperates with both of the flanges. A seal is provided for the pipe ends. A fastening screw presses the two flanges together. The fastening screw has first and second threaded regions being successively engaged upon pressing the flanges together. The first threaded region has a substantially greater pitch than the second threaded region.

Abstract: A remote-controllable screw connection includes a nut, a first flange relvely closer to and a second flange relatively further away from the nut. At least one screw bolt connects the flanges to the nut. A sheath surrounds the screw bolt between the nut and the first flange. The sheath is non-rotatably but axially displaceably connected to the screw bolt.

Abstract: A hose fitting wherein the free end of a nipple or pipe is sealingly held in one end portion of a hose by a sleeve having a tubular body with a single axially parallel slot and one or more bridges extending across the slot at the exterior of the tubular body. The latter has depressions which extend toward the nipple or pipe to urge the end portion of the hose into sealing engagement with the nipple or pipe. The sleeve can be detached from the end portion of the hose by partially or fully destroying, by deforming or by removing the bridge or bridges so that the slot can be widened prior to separation of the sleeve from the hose.

Abstract: A swivelable quick connect assembly for use with tubular conduits is disclosed as comprising a housing having an axial bore for receiving one end of the conduit, an elastomeric ring-like seal is disposed in the bore for providing a fluid tight seal between confronting portions of the conduit and the housing, an annular bushing is disposed in the bore for positioning the seal and for guiding the one end of the conduit into nesting relationship with the bore, and a retainer is detachably secured to the housing and is cooperable with an annular projection on the conduit for securing the conduit in its operative position within the bore, the retainer having resilient deformable portions which are adapted to snap over the locking wall upon insertion of the conduit into the housing bore.

Abstract: Mechanism for attaching a high pressure tube to an opening in a housing using a tapered opening into which a high pressure tube is inserted. A fitting has one end positioned about the tube end and is then press fitted not only to the housing on an outer diameter fitting section but also inwardly against the tube end as well as the other fitting end being press fitted to the housing to further secure the fitting to the housing, all of the press fits providing high pressure seals. The fitting other end also provides for prealignment of a fitting cross passage with a housing side passage so that high pressure fluid flowing between the tube and the side passage has minimal directional change in passing from the cross passage to the side passage. The fitting other end is adapted to receive press fitting force in axial alignment with the fitting.

Abstract: A connector for connecting a small diameter pipe is disclosed, the arrangement being such that: a joint body formed with an insertion bore for a pipe has large, intermediate and small diameter portions; a seal ring is attached to the intermediate diameter portion; and a holder including a pair of elastic stoppers is set in an opening formed in the large diameter portion, the stoppers engaging with a swelling wall shaped on the pipe circumference, thus positioning the pipe and preventing its removal. The connector further includes a confirmative member which is stopped in the opening when the pipe is in the proper connecting position to the joint body. The confirmative member comprises a securing wall provided at the tips with stopping pawls and having a pair of arms. The confirmative member is disengaged from the opening on the basis of a positional correlation between the swelling wall or elastic stoppers and the securing wall when the pipe is properly installed.

Abstract: A tieback connector for use in connecting the lower end of a well conductor to the upper end of a tubular wellhead member by a radially movable split locking ring carried by the tieback connector for locking engagement within grooves formed in the bore of the wellhead member.