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| Number | Title | Issue Date |
| 8146960 | Two hermetic threaded tubular joints An assembly including two symmetrically-disposed expandable threaded tubular joints. The joints including a male tubular element at one end of a tube and equipped with a male thread, a first annular lip having a first axially abutting surface, a first inner surface ... | 04/03/2012 |
| 8056940 | Pipe connector device A pipe connector comprises a tubular pin member having a frustoconical outer surface and a tubular box member having a frustoconical inner surface corresponding to the outer surface of the pin member and which overlies the frustoconical surface of the pin member whe... | 11/15/2011 |
| 7954861 | Crimped/swaged-on tubing terminations and methods A tubing termination comprises a termination portion adapted to make a fluid connection and a tube attachment portion, adapted to receive a tube and to be crimped or swaged. The tube attachment portion comprises a retention mechanism that is adapted to be manipulate... | 06/07/2011 |
| 7798536 | Reverse sliding seal for expandable tubular connections An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal at a specific area along the pin and box members is disclosed. The invention utilizes a “groove” in a surface of the box member and a correspondi... | 09/21/2010 |
| 7654588 | Pipe connection having improved strength A pipe connection includes a metal locking ring which can be pushed onto the external pipe of two interlocking metal pipes to connect the latter. The inner face of the locking ring has a leading section that tapers conically in a radial direction in opposition to th... | 02/02/2010 |
| 7581766 | Reinforced tubular joint for improved sealing-tightness after plastic expansion The invention relates to a high-performance threaded tubular joint comprising a first, male tubular element (11) and a second, female tubular element (12) made up together by screwing. One of the tubular elements (11; 12) has a non-threaded lip ... | 09/01/2009 |
| 7475918 | Press fitting system A press fitting system for creating an unremovably sealed connection between smooth-ended pipes comprises at least one section that is embodied in a collar-type manner and at least one bead which is located on the terminal side of the collar-type section and accommo... | 01/13/2009 |
| 7419193 | Tubing connector A method of coupling first and second expandable tubulars comprises providing a male tubular connector portion and a female tubular connection portion having greater yield strength, coupling the connector portions together, and expanding the coupled connector portio... | 09/02/2008 |
| 7380839 | Sealing expandable tubing Expandable tubing and methods seal a connection between expandable tubulars, and in particular, seal a connection between expandable tubulars post-expansion. In one embodiment, a method includes sealing a connection between expandable tubulars in the form of section... | 06/03/2008 |
| 7380840 | Expandable threaded connection Tubular connections and methods of designing tubular connections having selected root/crest clearance when the box member and pin member are made-up. When the tubular connection is radially expanded, a thread seal is formed over at least part of the tubular connecti... | 06/03/2008 |
| 7340800 | Three-piece barrel hinge A barrel hinge having a female barrel portion and two male barrel portions. The female barrel portion has a sidewall with an aperture formed therein, a length, two ends, and an outside surface, and an axial bore, with an interior wall surface and a diameter, which e... | 03/11/2008 |
| 7337519 | Method for producing a coiled tubing connector assembly A coiled tubing connector for connecting tools together when they are inserted into a well bore. The connector includes a disposable element that may be severed along with the connected portion of the coiled tubing. This provides for quick disconnect and reuse of th... | 03/04/2008 |
| 7325840 | Arrangement for connecting a fiber-reinforced plastic pipe to a stainless steel flange Arrangement for connecting a fiber-reinforced plastic pipe (18) to a stainless steel flange (12, 16), in which the end of the fiber-reinforced plastic pipe (18) is accommodated in a ring-shaped groove (12a, 16a) in th... | 02/05/2008 |
| 7308755 | Apparatus for forming a mono-diameter wellbore casing A mono-diameter wellbore casing. The mono-diameter wellbore casing is formed by plastically deforming and radially expanding a first tubular member within a wellbore. A second tubular member is then plastically deformed and radially expanded in overlapping relation ... | 12/18/2007 |
| 7240928 | Tubing connection arrangement A tubing connection arrangement and a method used for coupling expandable tubing sections together. In one embodiment, there is disclosed a tubing connection arrangement comprising a first expandable tubing section defining a male portion; a second expandable tubing... | 07/10/2007 |
| 7237809 | Coiled tubing connector A tubing connector comprising a rigid member having a first end and a second end; a crimping groove disposed about the rigid member; and a sleeve fixably attached to the rigid member and covering the crimping groove. A method for connecting a tubing section to a rig... | 07/03/2007 |
| 7228626 | Adapter mandrel used in conjunction with premolded high voltage connectors and connector components A mandrel, useful in high voltage cable splicing and termination operations, having a tapered surface and longitudinal ribs for assembly onto a high-voltage cable to be connected to a premolded or extruded high-voltage component. As the premolded high-voltage compon... | 06/12/2007 |
| 7172027 | Expanding tubing A method of expanding tubing downhole comprises providing a section of expandable tubing of a first diameter, and axially compressing the tubing to induce buckling, such that the buckled portion describes a larger second diameter. The resulting diametric expansion m... | 02/06/2007 |
| 7146702 | Method and apparatus for forming a mono-diameter wellbore casing A mono-diameter wellbore casing. The mono-diameter wellbore casing is formed by plastically deforming and radially expanding a first tubular member within a wellbore. A second tubular member is then plastically deformed and radially expanded in overlapping relation ... | 12/12/2006 |
| 7111688 | Clamping well casings A clamp for clamping two concentric tubes, typically two concentric tubes in an oil or gas well. The clamp has two axially movable tapered components which can be pulled over one another in an axial direction to provide a contraction of internal diameter which grips... | 09/26/2006 |
| 7086669 | Method and apparatus for sealing radially expanded joints Connectors and connections that enhance mechanical and sealing engagement between the ends of tubular bodies that are radially expanded by a forging tool. The connectors are designed to maintain or restore mechanical and sealing engagement following expansion. The c... | 08/08/2006 |
| 7062834 | Process of forming two beads A process for forming a metallic tubular connector of the type having a cylindrical shell which extends circumferentially about a tubular body for joining said tubular connector to a conduit. The process involves using a first forming machine to form a first periphe... | 06/20/2006 |
| 7028383 | Method for joining and sealing conduits The apparatus for joining and sealing conduits, includes edge trim, a sleeve, and a retaining element. The edge trim is shaped to mount upon and engage an end of a conduit. The sleeve extends between the conduits and at least partially surrounds the edge trim. The s... | 04/18/2006 |
| 6976712 | Corrosion-resistant coupling means and methods for using same A coupling couples pipes of pipe fixes, especially polytetrafluoroethylene pipes. Methods for using the coupling are also provided. ... | 12/20/2005 |
| 6932118 | Low chamfer angled torque tube end fitting metal A method of forming a torque tube (64) is provided. The method includes forming a fitting (80) having an elongated tube conforming area (88). The conforming area (88) includes chamfer areas (82) having upper surfaces (90), l... | 08/23/2005 |
| 6805385 | Non-detachable press fit arrangement between a fitting and an end portion of a metal pipe In a non-detachable press fit arrangement between an end portion of a metal pipe and a socket of a fitting, the socket defines an interior space and is formed with an annular anchoring groove which faces the interior space for receiving a sealing ring. The press fit... | 10/19/2004 |
| 6805384 | Sealing mechanism An apparatus includes a body, an adapter and a seal ring. The apparatus may be coupled to provide a seal that has a primary metal to metal seal and a secondary seal obtained via extrusion of the seal ring. ... | 10/19/2004 |
| 6789822 | Expandable slotted tubing string and method for connecting such a tubing string An expandable tubing assembly comprises a tubular connector defining overlapping longitudinal slots, the connector comprising end portions and an intermediate portion. The slots extend over the whole length of the connector, but the only slot overlap occurs in the i... | 09/14/2004 |
| 6688653 | Fitting assembly for fluid and vapor connection A fitting assembly for fluid and vapor connection comprising a first tube, a second tube and a thin strip of polymeric material. A male member is formed at the end of the first tube. A hollow female body is formed at end of the second tube. The male membe... | 02/10/2004 |
| 6634677 | Pipe connections and methods for connecting pipes A pipe joint assembly includes a cylindrical pipe and a pipe element having a generally cylindrical terminal portion for receiving the end of the pipe. The terminal portion is formed with a roughly straight open ended channel extending in a direction tang... | 10/21/2003 |
| 6619701 | Connection of a metal pipe with a metal sleeve The invention relates to a connection of a metal pipe with a metal sleeve by means of cold-pressing deformation. The metal sleeve on its inside shell is provided with a pipe limit stop and the portion of the sleeve to be connected with the pipe end, along... | 09/16/2003 |
| 6619702 | Structure of a connection portion of an exhaust pipe for an engine and a method for providing the same An extension portion extending outwardly is integrally formed on the edge of an end portion of an exhaust pipe; a collar is fixed on the outer periphery of the end portion of the exhaust pipe by caulking; and the edge of the outer end of the collar is abu... | 09/16/2003 |
| 6481764 | Pipe coupling method and apparatus A method of connecting two malleable pipes comprising locating the pipes, one inside a portion of the other with O-rings between the pipes, and applying a crimping tool to inwardly deform the pipes and thereby cause the O-rings to deform and establish a f... | 11/19/2002 |
| 6450553 | Axial swage fitting for large bore pipes and tubes A fitting for joining pipes, tubes, or conduits improves coupling capability particularly to a large bore pipe, generally of 2 inches and larger in diameter. The fitting includes a substantially cylindrical sleeve and ring. The sleeve has an inner surface... | 09/17/2002 |
| 6367850 | Fitting assembly for fluid and vapor connection A fitting assembly for fluid and vapor connection comprising a first tube, a second tube and a ring. The first tube has a male member at the end of the first tube and a radially enlarged upset formed at a distance from the end of the first tube. The secon... | 04/09/2002 |
| 6368225 | Axially collapsible driveshaft assembly and method of manufacturing same A driveshaft assembly for use in a drive train system includes an inner driveshaft tube section including an end portion having an outer surface and an outer driveshaft tube section including an end portion having an inner surface. A plurality of axially ... | 04/09/2002 |
| 6260891 | Press-fitting for non removable tube coupling A press fitting for producing a nondetachable tight connection of smooth-ended pipes which has at least one portion receiving a toroidal sealing element and an adjoining cylindrical area extending in the longitudinal direction, and is provided with a shou... | 07/17/2001 |
| 6224114 | Pipe joint A pipe joint, includes a press fitting with a section that is beaded in cross-section and holds a sealing ring and with a cylindrical area attached thereto that has, at the end of its extension, a flange-like depression forming a stop. The pipe joint also... | 05/01/2001 |
| 6131964 | SAS fitting for tube and pipe connections The present invention provides an apparatus for making a tube connection. The apparatus comprises a sleeve having an interior surface adapted for receiving a tube section therein. The sleeve further has an exterior surface having a locking mechanism dispo... | 10/17/2000 |
| 6131956 | Pipe coupling A pipe coupling comprises a cylindrical pipe, whose smooth end section can be slipped onto a fitting that has at least one sleeve-like area extending in the longitudinal direction At least one sealing ring is arranged between the pipe and the fitting. The... | 10/17/2000 |
