Distinct Spaced Serial Patents (Class 285/383)
  • Patent number: 10471662
    Abstract: A rehabilitated pipe system and a method for rehabilitating a pipe system. A lines a host pipe and a coupling member configured for being operatively coupled to a mechanical coupler is positioned adjacent the host pipe so that a connecting section of the liner extends into the coupling member. The connecting section of the liner is adhesively bonded to the coupling member, and the mechanical coupler is installed to fluidly couple the liner to another fluid conducting structure. The connecting section of the liner can be formed in a portion of the host pipe that is removed after lining. The coupling member can be flanged or include a lateral coupling tube. The mechanical coupler can, e.g., be a ductile iron coupler or a bolt.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: November 12, 2019
    Assignee: INA Acquisition Corp.
    Inventors: Mark Hairston, Barry Paschall
  • Patent number: 9797532
    Abstract: A pipe joint is connected with a connecting pipe, and includes a pipe joint body and a nut member. When the connecting pipe formed with a bead expanded in the radial direction is connected with this pipe joint, a male thread of the pipe joint body is engaged with a female thread of the nut member to hold the bead between a tapered face and a tapered face. In addition, the joined portion between the bead and the tapered face forms a first sealed portion, and a joined portion between the bead and the tapered face forms a second sealed portion. Still further, a tapered face of the pipe joint body is joined with the tapered face of the nut member to form a third sealed portion.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: October 24, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Hiroaki Makino
  • Patent number: 8991490
    Abstract: Underground drilling operation often requires connecting a drill tool (e.g., drill bit, backreamer, etc.) to a drill string. It is desirable to connect the drill tools to a drill string in a manner that facilitates quick and easy assembly and disassembly. Low torque coupling, commonly referred to as “torque-less” connection, can provide such functionality. The useful life and strength of such connections can be improved upon. The present disclosure provides a low torque coupling with improved strength and durability.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: March 31, 2015
    Assignee: Vermeer Manufacturing Company
    Inventors: Michael D. Langenfeld, Randy R. Runquist
  • Publication number: 20140345744
    Abstract: A bottle coupling device for connecting a first bottle to a second bottle is provided. The first bottle has a first threaded opening and the second bottle has a second threaded opening. The first bottle holds a first substance and the second bottle holds a second substance. The bottle coupling device comprises a hollow female coupling having an outer surface and an inner surface with a first end and a second end. The inner surface of the first end and the second end are threaded. The first opening of the first bottle is threadably connectable to the first end of the female coupling and the second opening of the second bottle is threadably connectable to the second end of the female coupling. Wherein the second substance is transferrable to the first bottle through the female coupling.
    Type: Application
    Filed: May 22, 2014
    Publication date: November 27, 2014
    Inventor: Daniel Wulstein
  • Patent number: 8857860
    Abstract: A corrosion resistant coupling assembly for two glass-lined, premium threaded pipe joints, the coupling assembly having opposed liner end wedge flanges that engage and trap a compressible, reinforced polymeric ring disposed between them, wherein the compressible ring has a wedge-shaped cross-section with oppositely facing, oppositely inclined side surfaces, so that each oppositely inclined side surface contacts and abuts against an oppositely disposed, cooperatively inclined surface of a liner end wedge flange to provide a corrosion-resistant barrier between the two pipe joints when the pin end and the box end are threadedly engaged and tightened to compress the polymeric ring.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: October 14, 2014
    Assignee: Composite Lining Systems, LP
    Inventors: Joseph A. Schwalbach, Donald R. Warr
  • Patent number: 8740259
    Abstract: A threaded connection includes a first pipe having an internal liner and a first pin end on a distal end thereof, the first pin end comprising a first annular seal permanently affixed therein, a second pipe having an internal liner and a second pin end on a distal end thereof, the second pin end comprising a second annular seal permanently affixed therein, a coupling having a first and second box end. The first pin end and the first box end, and the second pin end and the second box end are threadedly are threadedly engaged and a mating surface of the first annular seal is configured to contact a mating surface of the second annular seal and provide a continuous internal seal along an axial length of the threaded connection.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: June 3, 2014
    Assignee: Tenaris Connections Limited
    Inventors: Gaston Mauro Mazzaferro, Alejandra Paola Sanmartino
  • Patent number: 8665100
    Abstract: The performance of a PCA unit associated with an airport gate is monitored by a temperature sensor in the stream of output air leaving the PCA unit, to produce a signal indicative of the temperature of the output air that may be compared to an acceptable range of values, or to the temperature of air input to the PCA unit (as measured by a second temperature sensor). An alert is generated to a human operator if the temperature measured does not compare favorably with the desired range.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: March 4, 2014
    Assignee: Twist, Inc.
    Inventors: Joe W. Wright, James Dillon, Dave McIntire
  • Patent number: 8641100
    Abstract: A threaded tubular connection that is leak-proof for internal and external successive pressure loads including a male element and a female element. At least one of the male or female elements includes a lip between the threading and the free end of the element. The lip includes a first zone with a peripheral surface turned towards the other element on which a first metallic sealing surface is disposed that can be radially interference fitted against a corresponding second metallic sealing surface disposed on the other element. The lip includes a second zone located axially between the first zone and the corresponding threading. The radial stiffness of the second zone is less than that of the first zone and that of a third zone adjacent to the second zone in the direction of the threading, and the second zone can be radially deformed by a pressure exerted thereon.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: February 4, 2014
    Assignees: Vallourec Mannesmann Oil & Gas France, Nippon Steel & Sumitomo Metal Corporation
    Inventors: Claire Patureau, Olivier Tartar
  • Publication number: 20140007411
    Abstract: An adjustable pipe connector device for connecting two pipes, each of the pipes having a central axis, includes at least three disks. Each of the disks has a bore extending between opposite surfaces of that disk. The disks include two opposite external disks and a central disk between the two opposite external disks. The bore of each of the opposite external disks is connectable to one of the pipes. Each of the opposite external disks is rotatable relative to the central disk so as to achieve a configuration wherein the device matchingly connects between the pipes when the central axes of the pipes are laterally offset, angularly misaligned or both, the bores of the disks forming a flow path between the pipes.
    Type: Application
    Filed: July 9, 2012
    Publication date: January 9, 2014
    Inventor: Arie PRIZANT
  • Patent number: 8251139
    Abstract: For oil production systems, an interior two-part seal ring of resilient material is disposed within a coupling sleeve which receives threaded tubing ends in its opposite ends. The seal is asymmetric, with tapered ends of different lengths and taper angles. A length for mill end engagement is shorter than the length for field end engagement which may be made up and disconnected repeatedly. The seal configuration includes a principal body with a inwardly directed ridge between its tapered ends and a reinforcing ring of different, less permeable material, abutting the ridge and closing off one or more radial ports in the wall of the body. The central body also includes a circumferential gas groove about is periphery, which together with the radial ports, facilitates collection and release of gases permeating the seal body under high down-hole pressures.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: August 28, 2012
    Inventor: Kenneth J. Carstensen
  • Patent number: 8167340
    Abstract: A threaded pipe coupling is shown for a drill pipe used in horizontal boring operations utilizing a special form of a threaded connection with an internal stiffener ring which eliminates the need for hot forging operations. The pipe coupling is used for joining an upset region of a first tubular member to a further tubular member of lesser external diameter. The internal stiffener ring is received within the internal bore of the pin end of the coupling and underlies and extends along a portion of its length. The stiffener ring having an innermost extent terminating in an exposed end which is received upon an internal shoulder provided in the mating internally threaded box end. The stiffener ring also has an external shoulder formed at the innermost extent thereof which traps the pin face between the ring exterior and the box threaded interior.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: May 1, 2012
    Assignee: Hunting Energy Services, Inc.
    Inventor: Wilkinson L. Olivier, III
  • Publication number: 20120034417
    Abstract: According to the invention, it was recognized that the fiber products, in particular, glass fiber products, suitable for thermal insulation can be temporarily given: an inherently stable shape by fixing agents that can be activated. This enables the fiber molded parts produced from the fiber products according to the invention to be used more easily or fully automatically. Processing the fiber products to form a molded part becomes exceptionally simple if said product itself carries the fixing agents. Therefore, a fixing agent does not have to be added in a separate production step during the molding.
    Type: Application
    Filed: April 21, 2010
    Publication date: February 9, 2012
    Inventor: Diederik Cuylits
  • Patent number: 8097154
    Abstract: To be able to insert a cylindrical filter element (10) which is joined at each end to an end disk (14) quickly into a housing element (40) in a filter unit (100) and connect it firmly, a screw connection having conical threads (16, 46) on the filter element (10) and on the bottom of the housing (41) is provided.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: January 17, 2012
    Assignee: Mann+Hummel GmbH
    Inventors: Klemens Dworatzek, Ralf Bauder, Steffen Ackermann
  • Publication number: 20110253067
    Abstract: A pipe fitting is connected in a conduit from a source of fluid under pressure. The pipe fitting comprises a tubular body defining an elongate interior chamber open at both an upstream end and a downstream end. The wall of the body defines a plurality of radial passages opening into the interior chamber and extending through the wall at an acute angle relative to the longitudinal axis of the body. The passages open to the atmosphere through the wall axially spaced upstream from the passage openings into the interior. Fluid flows through the body from the upstream end to the downstream end without escaping through the passages. When fluid flow is blocked downstream of the body, backflow of fluid is directed radially outwardly and angularly upstream through the passages to the atmosphere.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 20, 2011
    Inventors: Joseph Vetter, James Kevin Merrill, James Punjack, John Punjack
  • Patent number: 8029026
    Abstract: Systems related to threaded connections whereby off-center axial alignment of connected components is maintained. In one embodiment, threads on one connection component are timed to match the timing of the threads on the other connection component. The one component has a connection sleeve screwed thereon. Once the one component and the other component are mated in the desired axial alignment such that the threads on each joint form a continuous, unbroken thread, the connection sleeve is screwed onto the other component to form the threaded connection.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: October 4, 2011
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Joseph W. Stolle, Steven B. Lonnes
  • Publication number: 20110114195
    Abstract: A union coupling having a removable screen is disclosed. The union coupling includes a pipe joint, a fitting that receives the screen, and a collar which clamps the fitting to the pipe joint. In one form, the fitting has an inner surface that defines a passage through the fitting and a pocket formed in the inner surface. The screen has a transverse extension that is received at least in part in the pocket with engagement of the transverse extension and pocket restricting passage of the screen past a predetermined position in the passage. A union coupling having a fitting comprising a fitting body with an outward flange and a shoulder element with an outward flange is also provided. The shoulder element is connected to the fitting body to captivate a collar between the outward flanges of the fitting so that the collar does not become separated from the fitting body. A method of assembling a union coupling is also provided.
    Type: Application
    Filed: November 19, 2009
    Publication date: May 19, 2011
    Inventors: Clint R. Haas, Jason A. Reichard
  • Patent number: 7909368
    Abstract: A coupling assembly includes a first pipe having a threaded portion and a non-threaded portion and a second pipe having a threaded and non-threaded portion. The non-threaded portion of each of the pipes is located at a free end of the first pipe and the second pipe. The coupling assembly also includes a coupling member for fixedly connecting the first pipe and the second pipe. The coupling member includes a first threaded inlet for receiving the first pipe, a second threaded inlet for receiving the second pipe and a non-threaded portion extending between the first inlet and the second inlet. The non-threaded portion of the coupling member includes an annular recess. A cross-section of the annular recess includes a vertical leg, a first angled leg extending from the vertical leg, a horizontal leg extending from the first angled leg, a second angled leg extending from the horizontal leg and a third angled leg extending from the second angled leg to the first threaded inlet of the coupling member.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: March 22, 2011
    Assignee: Robroy Industries, Inc.
    Inventor: Oscar Zapata
  • Patent number: 7874596
    Abstract: A connecting arrangement has end sections of two fluid conduits to be connected to one another and a coupling element having an axis and an outer side surrounding the axis and an inner side surrounding the axis. On the circumference of the end sections first securing ribs extend in the circumferential direction. On the inner side of the coupling element second securing ribs extending in the circumferential direction are provided proximal to each axial end of the coupling element. The coupling element is coaxially coupled to the end sections in the coupled state of the connecting arrangement by being elastically expanded, wherein the second securing ribs lock behind the first securing ribs and the end sections are coupled seal-tightly with one another. The coupling element is a circular cylindrical sleeve that is closed circumferentially.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: January 25, 2011
    Assignee: Norma Germany GmbH
    Inventors: Janos Kertesz, Gerhard Wachter
  • Publication number: 20110006520
    Abstract: A connector for the connection of a plurality of conduits is described, the connector comprising: a male connector portion (10) and a female connector (12) portion; the male connector portion having a plurality of male conduit connection spigot members (26, 28. 30, 34) sealingly engageable with a plurality of female conduit connection socket members in the female connector portion; the spigot members and socket members (152, 154, 156, 158) having conduit receiving means; a conduit clamp member (38) in each of the male and female connector portions; mutual engagement means in the connector portions for holding the male and female connector portions together or for allowing separation of the connector portions, the engagement means being responsive to fluid flow stemming and fluid flow permitting positions of the clamp members.
    Type: Application
    Filed: December 18, 2008
    Publication date: January 13, 2011
    Applicant: Smith & Nephew Plc
    Inventors: Kristian Hall, Edward Hartwell, Martin Richardson
  • Patent number: 7850213
    Abstract: A coupling to connect two pipes, and to connect pipe fittings and valves with pipes, which includes arcuates provided with inner flanges in their end portions, where said arcuates are positioned around crossable inner means, which means can also be used by different types of cylindrical couplings which couplings require grooves around cylindrical rings mounted around the end portions of pipes; where crossable inner means is comprised of a centrally located partitioner ring located between two pipes, which ring separates two gaskets provided with backup rings which backup rings are provided with radial circumferential grooves for the attachment of said arcuates bridging across said inner means. Said backup rings are attachable to the shoulders constructed around the end portions of two opposite pipes.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: December 14, 2010
    Inventor: Ajit Singh Gill
  • Publication number: 20100276927
    Abstract: The present invention provides a flow restrictor coupling (10) and a method of forming a flow restrictor coupling. The flow restrictor coupling (10) comprises a hollow tubular member (12) having at a first end thereof first means for engagement with an end of a first pipe and, at a second end thereof, second means for engagement with an end of a second pipe, wherein said hollow tubular member (12) is arranged to couple said first pipe to said second pipe and to provide for fluid communication therebetween, said flow restrictor coupling (10) further being arranged to present at least one aperture (26) in a wall of said hollow tubular member between said first and second ends, the aperture (26) having selectively variable dimensions for control of fluid flow therethrough.
    Type: Application
    Filed: June 18, 2008
    Publication date: November 4, 2010
    Applicant: FloTech Holdings Limited
    Inventors: Sam Simonian, Colin Boyle, Neale Carter
  • Patent number: 7731246
    Abstract: A tubular coupling system and method; the system and method in at least certain aspects, using a coupling member with an interior protective ring that has at least one inner energizing member which, upon compression, forces the body of the coupling member against an interior wall of the coupling thereby inhibiting corrosive material from contacting the coupling's interior wall or, in the event some corrosive material does enter this area, holding the interior protective ring against the coupling's interior wall so that the corrosive material remains in and does not exit this area, thus inhibiting or preventing a continuous flow of corrosive material.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: June 8, 2010
    Assignee: Varco I/P, Inc.
    Inventor: Thomas Kilpatrick McLaughlin
  • Publication number: 20090289453
    Abstract: A pipe coupling connecting and disconnecting media conducting pipes, hoses or like conduits, which comprise two coupling halves situated at ends of the conduits; and a connector and a socket end having shutoff sleeves in both coupling halves.
    Type: Application
    Filed: May 22, 2008
    Publication date: November 26, 2009
    Inventor: Thomas Sauer
  • Patent number: 7604261
    Abstract: A moisture proof electrical connector assembly for securing an electrical metal tube or conduit to a connector body having opposed end portions and having a bore extending therethrough wherein an end portion includes a first linear length sized and shaped to receive a metal tube or conduit and a second linear length having a diverging inner surface provided with an intermediate shoulder for delineating the first length form the second linear length, and a complementary sealing gland for rendering the entire assembly moisture proof.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: October 20, 2009
    Assignee: Bridgeport Fittings, Inc.
    Inventor: Kenneth M. Kiely
  • Patent number: 7510219
    Abstract: An interconnection for oil field tubular goods operates in a self sealing manner in response to internal pressures which might otherwise cause leakage through couplings or joints. Each coupling sleeve includes an interior fulcrum ring fitted between the nose ends of the tubing or casing, and centrally engaging a fulcrum seating zone centered in the sleeve. Internal pressures tend to bend the ends of the fulcrum ring outwardly toward clearance or relief spans on each side of the fulcrum zone. This deflection increases the contact force and enhances the metal-to-metal seal between the end faces of the fulcrum ring and the pin end faces.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: March 31, 2009
    Inventor: Fred N. Huston
  • Patent number: 7490372
    Abstract: A shower head includes an adapter, an extension pipe, a cover, and a filter. Thus, the locking blocks of the extension pipe are locked in and unlocked from the locking slots of the adapter by rotation of the extension pipe, so that the extension pipe is mounted on and detached from the adapter easily and rapidly, thereby facilitating a user mounting and detaching the shower head.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: February 17, 2009
    Inventor: Shu Zhu Huang
  • Patent number: 6863313
    Abstract: A corrosion-resistant threaded connection including a first tubular member having an outer metal tube of corrosion-prone material and an inner metal lining of corrosion-resistant material, the first tubular member forming a first pin connection having a nose portion comprising a ring of corrosion-resistant material secured, e.g.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: March 8, 2005
    Assignee: Grant Prideco, L.P.
    Inventors: Richard W. DeLange, Ghazi J. Hashem
  • Patent number: 6860525
    Abstract: A riser assembly includes riser segments, each having threaded ends. A coupling nut is connected to the threaded end of the first riser segment. The threads of a second riser segment and a set of corresponding threads of the coupling nut are breech threads, which allow the second riser segment to stab into the coupling nut and engage the first riser segment. The coupling nut rotates a portion of a turn in order for the breech threads of the second riser segment and the first riser segment to engage each other. Castellations on the first and second riser segments engage each other to transmit torsional forces from one riser segment to the other instead of through the threads.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: March 1, 2005
    Assignee: DTC International, Inc.
    Inventor: William C. Parks
  • Patent number: 6857667
    Abstract: A fluid quick connect includes a body having a conical, split end retainer slidably mounted in a recess in at least one end of the body. The retainer has a leading edge extending into a through bore in the body which is engagable with an annular flange on an endform inserted into the housing forcing the retainer angularly outward in the recess to allow passage of the annular flange of the endform past the retainer. A biasing force on the retainer due to the expansion of the diameter of the retainer moves the retainer back to a position in which the leading edge extends behind the trailing edge of the annular flange on the endform to latch the endform in the housing. The retainer and conical recess maybe used at one end of the housing for connection with one end form or at both ends of the housing to fluidically couple two end forms.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: February 22, 2005
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventor: David S. Malone
  • Patent number: 6851728
    Abstract: A pipe-coupling device comprises a joint body having an opening with external threads to receive a pipe, a locknut having internal threads engaged with the external threads of the joint body, an annular core member disposed within the locknut, and a plurality of locking members retained in apertures of the core member to be spaced circumferentially apart from each other. Upon tightening rotation of the locknut around the joint body, the internal conical surface of the locknut slidably contacts with the conical surfaces of the locking members so as to press the locking members radially inwardly, to cause the gripping portions of the locking members come into gripping engagement with the outer periphery of the inserted pipe, thereby strongly preventing withdrawal of the pipe from the joint body even when the pipe is made of hard material.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: February 8, 2005
    Assignees: Hakko Metal Industries Ltd.
    Inventor: Masafumi Minami
  • Publication number: 20040178626
    Abstract: A tubular assembly 10 is disclosed for passing fluids within a hydrocarbon recovery well. The tubular assembly 10 has an insulated connection 12 between insulated tubing segments 14, 16. Tubing segments 14, 16 are connected via a threaded connection, and the resulting joint 10 is insulated by an external insulating sleeve 18. The insulating sleeve 18 may have unitary construction, such that the sleeve 18 may only be installed or removed by first breaking apart the joint 10. Alternatively, the sleeve 18 may comprise a plurality of arcuate partial-sleeves, which may be assembled about or removed from the completed joint 10 without first breaking apart the joint 10.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 16, 2004
    Inventor: Salvador Segreto
  • Publication number: 20030132632
    Abstract: Socket (7) to be fitted on a pipe (1) and, respectively, coupling piece for joining two pipes. The pipe is provided, close to the end thereof, with a stepped-down section (4) on which a screw thread (5) is made. The transition to the main diameter extends at somewhat of an angle. The socket is provided with a lead-in section (8) that is of at least the same length as the adjoining threaded section. The lead-in section is provided close to the free end with a conical section equipped to engage on the sloping transition section of the pipe.
    Type: Application
    Filed: November 8, 2002
    Publication date: July 17, 2003
    Inventor: Marinus Henricus Maria Schoonen
  • Patent number: 6349979
    Abstract: An integral threaded connection of two metal tubes includes a male element and a female element, each of the elements including a bearing surface, a tapered threading, a sealing surface, and an end surface. The end and bearing surfaces are flat and perpendicular to the XX connection axis. The male sealing surface is separated from the male threading by a lip that has an external tapered lip surface whose amount of taper is equal to that of the male threading and has a generatrix which is substantially a roughly extension of the tangent to the male thread roots. The distance between the end and bearing surfaces of a same element is adapted to the corresponding distance on the other element so that at the end of connection, the inner pair of bearing surfaces is abutted first.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: February 26, 2002
    Assignee: Vallourec Mannesmann Oil & Gas France
    Inventors: Thierry Noel, Emmanuel Varenne
  • Patent number: 6273474
    Abstract: A corrosion-resistant threaded connection including a first tubular member having an outer metal tube of corrosion-prone material and an inner metal lining of corrosion-resistant material, the first tubular member forming a first pin connection having a nose portion comprising a ring of corrosion-resistant material secured, e.g.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: August 14, 2001
    Assignee: Grant Prideco, L.P.
    Inventors: Richard W. DeLange, Ghazi J. Hashem
  • Patent number: 6164481
    Abstract: A spin spray shield connected with a bucket to thereby assist the bucket to retain centrifugal paint spray when a roller is cleaned with a spinning tool, without detracting from the funtionality of the bucket for other purposes. The spin spray shield generally includes an annular shield member for being selectively located selectively substantially entirely above the mouth of a bucket to thereby serve as a shield for retaining spin generated paint spray within the confines of the interior of the bucket, and further includes a guide member located adjacent the side of the bucket for guiding selective movement of the shield member with respect to the mouth of the bucket.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: December 26, 2000
    Inventor: Timothy E. Geeham
  • Patent number: 6155613
    Abstract: A pipe joint with a sleeve element and with a spigot element configured to be threadedly connected together to collectively absorb the load experienced by the joint over the threaded sections of the sleeve and spigot. By suitably selecting the leads and tooth gaps in the sleeve or spigot, it is possible for the guide flank at one thread end to be braced against the load flank at the other thread end thereby effecting maximum bracing at the edges of the thread and decreasing toward the thread center.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: December 5, 2000
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Erich Quadflieg, Christoph Bunsen, Thomas Gigowski, Friedrich Lenze, Martin Schluter
  • Patent number: 6059338
    Abstract: A pipe connection includes a pipe having a smooth-ended end portion pushed onto a sleeve-like region of a fitting. The fitting includes a stop at one end of the sleeve-like region. A seal is arranged between the sleeve-like region of the fitting and the pipe. The pipe and the fitting are formed from a plastically deformable metal. A bead like deformation formed using an externally applied pressing tool axially secured the pipe and the fitting to one another. The deformation encompasses the pipe and the fitting and is located at a small enough distance from a free end of the sleeve-like region of the fitting so that the seal in this location is included in the deformation.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: May 9, 2000
    Assignee: Mannesmann AG
    Inventor: Rolf Diederichs
  • Patent number: 6042153
    Abstract: A corrosion-resistant threaded connection including a first tubular member having an outer metal tube of corrosion-prone material and an inner metal lining of corrosion-resistant material, the first tubular member forming a pin connection having a nose portion comprising a ring of corrosion-resistant material secured, e.g.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: March 28, 2000
    Assignee: Grant Prideco, Inc.
    Inventors: Richard W. DeLange, Ghazi J. Hashem
  • Patent number: 6036235
    Abstract: The reusable coupling assembly of the present invention includes a receiving and an inserted section. The tubing engagement end of both the inserted and the receiving sections is constructed and arranged to securely fit around the resin liner in externally threaded fiberglass resin lined metal pipe or tubing with cement mortar backing. When the sections of externally threaded fiberglass resin lined pipe or tubing sections with cement mortar backing are put together utilizing and internally threaded coupling, the receiving and the inserted mating sections come together within a mastic material to prevent corrosive fluids flowing through the externally threaded metal tubing or pipe sections from damaging any exposed metal surfaces within the internally threaded coupling.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: March 14, 2000
    Assignee: ICO P&O, Inc.
    Inventors: Don Anderson, Raymond Marrero, James Self
  • Patent number: 5975587
    Abstract: A repair fitting is provided for sealably connecting ends of a pipeline, when a damaged section of the pipeline has been removed. In a preferred embodiment, the pipeline ends are connected using the repair fitting with two stab fittings. The repair fitting includes a first and second piston and a first and second cylinder, wherein the first piston is slidable in the first cylinder and the second piston is slidable in the second cylinder. In an alternate embodiment, two fusion joints are used with the repair fitting to sealably connect the ends of the pipeline. A method is provided for making a repair fitting and a method is also provided for repairing a damaged section of a pipeline.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: November 2, 1999
    Assignee: Continental Industries, Inc.
    Inventors: Timothy F. Wood, David E. Bentley, Donald W. Wartluft
  • Patent number: 5833276
    Abstract: A conduit coupling for conduit sections includes a body with a rigid, outer casing and an elastomeric inner core. The core includes a passage with annular ridges for sealing the coupling on the conduit. A pair of lock nuts are mounted on the casing ends and each receives a gripper ring with gripper ring ridges for engaging the conduit. The lock nuts are threadably mounted on the casing for tightening the gripper rings against the conduit sections to resist pull-out.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: November 10, 1998
    Assignee: Etco Speciality Products, Inc.
    Inventor: Ernest R. Thompson, Jr.
  • Patent number: 5799984
    Abstract: A connector for a rigid electrical conduit has an internal cylindrical socket sized to snugly receive the end of the conduit. A spring leaf detent is externally mounted on the connector body, with a free end of the leaf extending through a slot in the connector body side wall. Inserting a conduit into the socket deflects the spring leaf away from the socket axis, thereby generating a resilient stress in the leaf that enables the free end of the leaf to exert a gripping action on the conduit. The grip action can be removed by unloosening a screw that is used to mount the leaf spring on the connector body.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: September 1, 1998
    Assignee: ANR Manufacturing, Inc.
    Inventor: Russell T. Reynolds, Jr.
  • Patent number: 5769466
    Abstract: The joint according to the invention relates to a sealed connection between metal pipes used for producing petroleum tubings or casings. This joint comprises a sleeve fitted with two threaded housings suitable for receiving the male ends of two pipes. The end faces thereof come to bear one against the other inside the sleeve. An annular convex tapering zone near the end face of each pipe bears in a sealing manner against an annular concave tapering zone of the sleeve. Shoulder stops 16 ensure the centering of each male end.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: June 23, 1998
    Assignees: Vallourec Oil & Gas, Sumitomo Metal Industries
    Inventors: Thierry Noel, Takuya Tsujimura
  • Patent number: 5762380
    Abstract: A pipe joint comprises two tube-end connectors 4, 4 to which the end of a tube 3 is connected, a cylindrical spacer 1 with the tube-end connector 4 fitted to either end, and a pair of metallic housings 6, 6 that each axially covers half the side outer circumference of the spacer 1 and each tube end connector 4, 4.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: June 9, 1998
    Assignee: SMC Corporation
    Inventors: Shoichi Hiwatashi, Takashi Tozaki, Toshio Funato
  • Patent number: 5707088
    Abstract: A joint for coupling corrugated or ribbed pipe segments, including helical ribbed pipe segments, end-to-end includes a segment of corrugated or ribbed pipe having a plurality of corrugations or ribs spaced axially along the segment's outer surface, a spigot portion at an end of the segment where the corrugations or ribs have been partially removed to form annular bosses, an annular gasket positioned in the spigot portion, and a cylindrical coupling positioned over the spigot portion and gasket. The outer diameter of the coupling is substantially equal to the outer diameter of the corrugations or ribs, and the inner diameter of the coupling is larger than the outer diameter of the bosses such that a gap is formed between the coupling and the spigot portion. The gasket is sized to have a radial thickness slightly larger than the gap such that the gasket forms an air-tight seal between the spigot portion and the coupling when the spigot portion and gasket are inserted into the coupling.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: January 13, 1998
    Assignee: Contech Construction Products, Inc.
    Inventors: Lyle Eugene Miller, James William Shade
  • Patent number: 5634672
    Abstract: A flangeless pipe joint including lined pipes with the end section of the outer pipe spaced radially outwardly from the liner and insulating material filling the space between the end sections of pipe and liners. The ends of the liners are sealed to each other and the outer pipe ends are joined by an outer sleeve.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: June 3, 1997
    Assignee: The Dow Chemical Company
    Inventors: Eugene V. Stack, Michael F. Jeglic
  • Patent number: 5570909
    Abstract: A connector for a rigid electrical conduit has an internal cylindrical socket sized to snugly receive the end of the conduit. A spring leaf detent is externally mounted on the connector body, with a free end of the leaf extending through a slot in the connector body side wall. Inserting a conduit into the socket deflects the spring leaf away from the socket axis, thereby generating a resilient stress in the leaf that enables the free end of the leaf to exert a gripping action on the conduit. The grip action can be removed by unloosening a screw that is used to mount the leaf spring on the connector body.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: November 5, 1996
    Assignee: ANR Manufacturing, Inc.
    Inventor: Russell T. Reynolds, Jr.
  • Patent number: 5566986
    Abstract: A multi-piece, pipe joint seal has a slidable interface between seal pieces. The slidable interface allows for slippage between pieces during pipe joint assembly and disassembly, minimizing rotational and other stresses on the seal pieces and pipe sealing surfaces which may damage or endanger the deformable seal. The slidable interface seal is especially useful for joining brittle-lined pipe sections handling harsh fluids.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: October 22, 1996
    Assignee: Union Oil Company of California
    Inventors: William C. Allen, William M. Rickard, Daniel P. Hoyer, David E. Stikkers, Matthew J. Kelley
  • Patent number: 5560655
    Abstract: The present electrical conduit coupling includes an electrical conduit coupling 10 and a lubrication fitting 11 thereon. The coupling includes a hollow body 12 including an external surface 13 and an internal surface 14. The internal surface defines a central bore 15 extending between first and second open ends 17, 19 that are adapted to receive conduit ends. A thickness dimension exists through the hollow body between the internal and exterior surfaces 13, 14. The lubrication fitting 11 is provided on the hollow body 12 between the first and second ends 17, 19. The fitting 11 extends at least partially through the thickness dimension to communicate with the central bore 15. The lubrication fitting 11 includes an internal one way valve 31 that permits injection of a lubricant into the central bore 15 but automatically closes to prevent reverse flow of lubricant outwardly through the fitting 11.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: October 1, 1996
    Inventor: Ricki T. Cameron
  • Patent number: 5547232
    Abstract: A reusable sealed coupling for joining a first pipe having a first internal diameter adjacent a first end thereof which is substantially equal to an outer diameter of a second pipe, the coupling comprising: a coupler capable of receiving the first end of the first pipe within a first portion thereof and an end of the second pipe within a second portion thereof so that the coupler, second pipe, and first pipe achieve mutual overlap in at least one region. The first and second pipes are both set into predetermined positions with respect to the coupler and with respect to one another; and a seal between the coupler, second pipe, said first pipe is created in at least a portion of the region of mutual overlap.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: August 20, 1996
    Assignee: Carrier Corporation
    Inventor: Timothy J. Waterman