GB2103744A - Connector fitting for the quick and releasable connection of synthetic piping - Google Patents

Connector fitting for the quick and releasable connection of synthetic piping Download PDF

Info

Publication number
GB2103744A
GB2103744A GB08210559A GB8210559A GB2103744A GB 2103744 A GB2103744 A GB 2103744A GB 08210559 A GB08210559 A GB 08210559A GB 8210559 A GB8210559 A GB 8210559A GB 2103744 A GB2103744 A GB 2103744A
Authority
GB
United Kingdom
Prior art keywords
connector fitting
housing
pipe
ring
clamping nut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08210559A
Other versions
GB2103744B (en
Inventor
Gunther Nehaus
Hilmar Hester
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Armaturenfabrik Hermann Voss GmbH and Co
Original Assignee
Armaturenfabrik Hermann Voss GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE3131690A priority Critical patent/DE3131690C2/de
Application filed by Armaturenfabrik Hermann Voss GmbH and Co filed Critical Armaturenfabrik Hermann Voss GmbH and Co
Publication of GB2103744A publication Critical patent/GB2103744A/en
Application granted granted Critical
Publication of GB2103744B publication Critical patent/GB2103744B/en
Application status is Expired legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0925Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/083Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping
    • F16L19/086Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping with additional sealing means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0926Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with an inner support sleeve arranged within the pipe
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0927Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling

Abstract

A connector fitting comprises a housing for receiving the end of a pipe 16, and a compression element 90 arranged within the housing 1 and having at least one cutting edge 93 for cutting into the end of the pipe 16 and an outer frusto-conical surface 92 which cooperates with an inner frusto- conical surface 94 on the housing 1. A peripheral seal 98 is disposed in a cylindrical recess 97 of increased diameter within the housing 1, and the housing 1 consists of two parts in screw-threaded engagement with one another, one of the parts being in the form of a threaded pipe 3 and the other part being in the form of a clamping nut 2 screwed on to the threaded pipe 3. A profiled ring 100, which may be fixed in position, is disposed within a region 99 of the recess 97 of increased diameter and abuts the outer wall of the recess 97. The profiled ring 100 serves to encase the preipheral seal 98 and avoids the need to form an inner groove in the clamping nut 2, thus reducing production costs. <IMAGE>

Description

SPECIFICATION Connector fitting for the quick and releasable connection of synthetic piping This invention relates to a connector fitting for the quick and releasable connection of synthetic piping of the kind comprising a housing for receiving the end of the pipe, a compression element arranged within the housing and having at least one cutting edge for cutting into the end of the pipe and an outer frusto-conical surface which cooperates with an inner frusto-conical surface on the housing and a peripheral seal within the housing.

Specification No. 2,072,780A discloses such a connector fitting in which the housing consists of two parts in screw-threaded engagement with one another, one of the parts preferably being in the form of a threaded pipe and the other part preferably being in the form of a clamping nut screwed on to the threaded pipe. The peripheral seal may be arranged within the clamping nut and in front of the compression element.

However, this connector fitting is difficult to produce, inasmuch as the groove for receiving the peripheral seal is very difficult to manufacture.

Furthermore, there is the danger with this connector fitting that dirt from outside will penetrate into the interior of the housing.

It is an object of the present invention to improve the connector fitting according to Specification No. 2,072,780A, so that its production can be facilitated and a sealing to prevent dirt penetrating from outside can be obtained. This object is achieved according to the invention in that in front of the inner frusto-conical surface of the clamping nut there is a cylindrical recess of increased diameter for the peripheral seal, and a profiled ring, which may be fixed in position, is disposed within a region of the recess of increased diameter and abuts the outer wall of the recess. By this means, the encasing of the peripheral seal, which is preferably in the form of an O-ring, is achieved by use of a profiled ring.

Thus the complicated production of an inner groove in the clamping nut is avoided, and it is only necessary to form the opening at the end of the clamping nut in stages. The nut is therefore easier, and thus more economical, to manufacture.

The production costs are not significantly increased by the addition of the profiled ring since this can be formed as a simple turned piece.

It is, moreover, appropriate according to the invention for a flexible sealing ring to be arranged in front of the peripheral seal in a groove which may be formed in the profiled ring. By means of this additional sealing ring above the peripheral seal, the interior of the housing is sealed off from the outside so that no dirt can penetrate into the housing which would particularly impair the sealing on the inside obtained by the peripheral seal. The fixing of the profiled ring inside the clamping nut may be accomplished by an end region of the clamping nut which is flanged over the profiled ring and the wall thickness of which is decreased by a shoulder.

According to a preferred embodiment of the invention, a connector fitting is produced which has improved sealing properties inside and outside with reduced production costs.

In order that the invention may be more fully understood, reference will now be made, by way of example, to the accompanying drawings, in which: Figure 1 shows a connector fitting according to Specification No. 2,072,7 BOA, partly in section; Figure 2 shows a further connector fitting according to Specification No. 2,072,780A, partly in section; Figure 3 is a view of the compression element used in the connector fitting of Figure 2; Figure 4 is a section along the line lV-lV of Figure 3; Figure 5 shows a connector fitting according to the invention, partly in section; and Figure 6 shows a part section of a variation of the connector fitting of Figure 5.

In Figure 1 there is shown a connector fitting in accordance with Specification No. 2,072,780A.

This consists of a housing 1 which comprises two threadedly engaged parts, namely a clamping nut 2 and a threaded pipe 3. The threaded pipe 3 consists of a connecting piece 4 which can also be threaded and a connecting piece 5 with an external thread 6 which engages the internal thread of the clamping nut. The clamping nut 2 is screwed on to the connecting piece 5. A compression element in the form of a clamping ring 7 is disposed within the clamping nut 2. The clamping ring 7 has a first portion 8, the outer surface 8a of which is frusto-conical, and, in the example shown, the inner surface of which is formed with three cutting edges 9. A centre section 10 is connected to the first portion, this centre section having a smaller wall thickness than the first portion 8.An end portion 11 is connected to the centre section 10, this end portion being formed with an internal flange. The frusto-conical outer surface 8a of the first portion 8 cooperates with a corresponding frusto-conical inner surface 12 on the clamping nut 2. Adjacent the smaller diameter end of the surface 12 is a cylindrical surface 13 having an inner groove 14 in which an O-ring 15 is located to act as a flexible sealing ring. The diameter of the surface 13 conforms to the outer diameter of a synthetic pipe 16 to be inserted into it, so that this can be sealed by the O-ring.

A cylindrical guide surface 17 on the clamping nut is adjacent the larger diameter end of the surface 12, the inner diameter of the surface 17 corresponding approximately to the outer diameter of the pipe 1 6 plus twice the thickness of the wall of the clamping ring 7. The connecting piece 5 has a central opening 18 which becomes wider towards the open end thereof. The threaded pipe 3 conforms to a standard German Industrial Standards connecting piece, so that the connector fitting can consist partly of standard components, so that universal application can be achieved at relatively low manufacturing cost. At the inner end of the opening 1 8 inside the threaded pipe 3 there is a recess 19 into which the through-bore 20 of the pipe opens and which serves as a stop for the end of the pipe 1 6.The through-bore 20 has an inner diameter which corresponds to that of the synthetic pipe 16. A supporting casing 21, preferably of metal, is inserted into the end of the synthetic pipe, this being used to support the pipe.

The end of the supporting casing 21 which projects from the pipe is provided with an external flange 22 which is compressed when the pipe is inserted and when subsequently the connection between the end of the pipe and the recess 1 9 is tightened. The threaded portions of the pipe 3 and clamping nut 2 are sealed externally by an O-ring 23 arranged in a rebate 24 at the rear end of the nut 2. By means of an inclined surface 25 on the clamping nut 2, compression of the O-ring 23 is effected when the clamping nut is tightened.

In Figure 2 an alternative embodiment of connector fitting according to Specification No.

2,072,780A is shown. As with the embodiment according to Figure 1, this consists of a clamping nut 2 and a threaded pipe 3. However, it embodies anotherform of sealing in conjunction with a modified compression element. An O-ring 75 is engaged on one side by the connecting piece 5 and on the other side by a compression element in the form of a clamping ring 76. The clamping ring 76 is shown in detail in Figures 3 and 4. In this case the clamping ring 76 has three cutting edges 9 and an outerfrusto-conical surface 77 which cooperates with the inner surface 78 of the clamping nut 2. So as to facilitate insertion of the pipe 16, the clamping ring 76 has an insertion opening 79 which widens outwards and a sloping contact surface 80 for the sealing ring 75 (see Figure 4).It has a slot 87, so as to provide two spring arms in conjunction with an opposite outer flat surface 88, whereby radial flexibility is obtained. The ring 76 can be made from a flexible synthetic material or from metallic material, preferably brass. The thread area is in addition sealed externally.

A connector fitting according to the invention is shown in Figure 5. A compression element in the form of a clamping ring 90 is arranged inside the clamping nut 2 in front of the connecting piece 5.

This clamping ring 90 has an outer cylindrical surface 91 and an outerfrusto-conical surface 92 adjoining the surface 91. The inner surface of the clamping ring 90 is formed with two cutting edges 93, one in the area of the outer cylindrical surface 91 and one in the area of the outer frusto-conical surface 92. Immediately adjacent its threaded section the clamping nut 2 has an inner frustoconical surface 94, so that an upwardly narrowing conical inner space is formed. The conical angle of the inner frusto-conical surface 94 corresponds to the outer frusto-conical surface 92 of the compression element.The inner diameter of the connecting piece 5 is slightly longer than the outer diameter of the inserted synthetic pipe 1 6, so that the pipe 16 can be inserted with a small amount of clearance, the pipe being guided into the connecting piece 5 by the inner leading edge of the connecting piece 5. The diameter of the opening 95 of the conically narrowing inner space is somewhat larger than the outer diameter of the pipe 1 6, and it is appropriate for the opening 95 to have the same diameter as the inner diameter of the connecting piece 5. A cylindrical guide section 96 extends upvvardly from the opening 95. In front of the guide section 96, in the direction of insertion of the pipe 1 6, there is a cylindrical recess 97 into which a resilient sealing ring 98 is inserted, this being a peripheral seal, for example an O-ring.At the end of the recess 97 there is a region 99 where the diameter increases. A profiled ring 100 is inserted into this region 99, this ring 100 abutting the wall of the recess 97 and thereby encasing the sealing ring 98. The profiled ring 100 has an opening for the pipe 16. A groove with a resilient sealing ring 102 is formed in the wall of the opening. The sealing ring 102 serves as a seal to prevent the penetration of dirt from outside, and the sealing ring 98 serves as an inner seal. The profiled ring 100 has an outer conical chamfer 1 03. Above this chamfer 103 the end region 104 of the clamping nut 2 is tapered by a shoulder 1 05, so that it can be flanged over for fixing the profiled ring 100 in position, as is shown by a dotted line.

In Figure 6 an alternative embodiment to that of the connector fitting according to Figure 5 is shown. The difference between this embodiment and the embodiment according to Figure 5 is that there is no outer seal, the profiled ring 107 being formed without an inner sealing ring so that it can be somewhat thinner than that shown in Figure 5.

An advantage of the connector fittings according to Figures 5 and 6 is that they are easier to produce than the connector fittings of Figures 1 to 4 in which the grooves for receiving the sealing rings are worked directly into the inner wall of the clamping nut.

In Figure 5, the connector fitting according to the invention is shown in a tightened condition.

On assembly, the pipe 16 is inserted into the previously assembled housing with a readyassembled, tightened clamping nut 2. Due to the flexible formation of the clamping ring 90, the pipe 16 can be pushed through the cutting edges 93 as far as the stop 1 9. By means of the clamping action of the clamping ring 90, the cutting edges cut into the soft synthetic pipe 16 and hold it securely. If the pipe 1 6 is pulled, or internal pressure is applied, the pipe 16 attempts to move out of the housing, the clamping ring 90 being carried along with it. Due to the cooperating action of the frusto-conical surfaces 92 and 94 which thereby occurs, the holding action of the clamping ring 90 is increased so that the pipe 16 is held securely. Since the sealing ring 98 is arranged in front of the clamping ring 90, the advantage is obtained that any damage to the pipe caused by the cutting edges 93 during insertion, or ducing subsequent withdrawal in the case of the connector fitting becoming loose, cannot affect the seal. The connector fitting according to the invention can always be released and can be reused. For this purpose, of course, the clamping nut 2 must be unscrewed from the threaded pipe 3. Then the clamping nut 2 and clamping ring 90 can be removed from the pipe 16, which is essentially achieved due to the flexibility of the clamping ring 90.

Claims (7)

1. A connector fitting for the quick and releasable connection of synthetic piping, comprising a housing for receiving the end of the pipe, a compression element arranged within the housing and having at least one cutting edge for cutting into the end of the pipe and an outer frusto-conical surface which cooperates with an innerfrusto-conical surface on the housing, a peripheral seal within the housing, the housing consisting of two parts in screw-threaded engagement with one another, one of the parts being in the form of a threaded pipe and the other part being in the form of a clamping nut, and the peripheral seal being arranged in a cylindrical recess of increased diameter within the clamping nut and in front of the compression element and the inner frusto-conical surface, and a profiled ring, which may be fixed in position, disposed within a region of the recess of increased diameter and abutting the outer wall of the recess.
2. A connector fitting according to claim 1, wherein the profiled ring is fixed in position by an end region of the clamping nut which is flanged over the profiled ring and the wall thickness of which is decreased by a shoulder.
3. A connector fitting according to claim 1 or 2, wherein the profiled ring has a conical chamfer in the vicinity of the flanging.
4. A connector fitting according to claim 1, 2 or 3, wherein a resilient sealing ring is arranged in a groove to form an external seal in front of the peripheral seal.
5. A connector fitting according to claim 4, wherein the groove is formed in the profiled ring.
6. A connector fitting according to any preceding claim, wherein the profiled ring is made of metal or a synthetic material.
7. A connector fitting substantially as hereinbefore described with reference to Figure 5 or Figure 6 of the accompanying drawings.
GB08210559A 1981-08-11 1982-04-08 Connector fitting for the quick and releasable connection of synthetic piping Expired GB2103744B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3131690A DE3131690C2 (en) 1981-08-11 1981-08-11

Publications (2)

Publication Number Publication Date
GB2103744A true GB2103744A (en) 1983-02-23
GB2103744B GB2103744B (en) 1984-11-28

Family

ID=6139064

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08210559A Expired GB2103744B (en) 1981-08-11 1982-04-08 Connector fitting for the quick and releasable connection of synthetic piping

Country Status (2)

Country Link
DE (1) DE3131690C2 (en)
GB (1) GB2103744B (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152617A2 (en) * 1984-02-22 1985-08-28 Anton Hummel GmbH Metallwarenfabrik Sealing device
GB2286026A (en) * 1994-01-19 1995-08-02 Guest John D Split Grab Ring
GB2300680A (en) * 1994-05-04 1996-11-13 Hepworth Building Prod Spigot and socket pipe joint with intermediate ring
WO1997012115A3 (en) * 1995-09-28 1997-05-22 Fiber Spar And Tube Corp Composite coiled tubing end connector
WO2004001273A1 (en) * 2002-06-25 2003-12-31 Itt Manufacturing Enterprises, Inc. High pressure fluid quick connect
FR2918150A1 (en) * 2007-06-29 2009-01-02 Legris Sa Outdoor washing connection easy
US7498509B2 (en) 1995-09-28 2009-03-03 Fiberspar Corporation Composite coiled tubing end connector
US8066033B2 (en) 1995-09-28 2011-11-29 Fiberspar Corporation Composite spoolable tube
US8187687B2 (en) 2006-03-21 2012-05-29 Fiberspar Corporation Reinforcing matrix for spoolable pipe
US8671992B2 (en) 2007-02-02 2014-03-18 Fiberspar Corporation Multi-cell spoolable composite pipe
US8678042B2 (en) 1995-09-28 2014-03-25 Fiberspar Corporation Composite spoolable tube
CN103807526A (en) * 2012-11-13 2014-05-21 南车青岛四方机车车辆股份有限公司 Clamping sleeve type metal sealing pipe joint and using method thereof
US8746289B2 (en) 2007-02-15 2014-06-10 Fiberspar Corporation Weighted spoolable pipe
US8763647B2 (en) 2001-04-27 2014-07-01 Fiberspar Corporation Composite tubing
US8839822B2 (en) 2006-03-22 2014-09-23 National Oilwell Varco, L.P. Dual containment systems, methods and kits
US8955599B2 (en) 2009-12-15 2015-02-17 Fiberspar Corporation System and methods for removing fluids from a subterranean well
US8985154B2 (en) 2007-10-23 2015-03-24 Fiberspar Corporation Heated pipe and methods of transporting viscous fluid
US9127546B2 (en) 2009-01-23 2015-09-08 Fiberspar Coproation Downhole fluid separation
US9206676B2 (en) 2009-12-15 2015-12-08 Fiberspar Corporation System and methods for removing fluids from a subterranean well
WO2017194691A1 (en) * 2016-05-11 2017-11-16 J Van Beugen Beheer B.V. Apparatus and method for restricting a movement of a pipe
US9890880B2 (en) 2012-08-10 2018-02-13 National Oilwell Varco, L.P. Composite coiled tubing connectors

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3517506C2 (en) * 1985-05-15 1987-07-16 Jean Walterscheid Gmbh, 5204 Lohmar, De
DE4241817C2 (en) * 1992-12-11 2003-04-10 Voss Armaturen Connection device for pipe and / or hose lines
DE4243844B4 (en) * 1992-12-23 2004-03-25 Voss Automotive Gmbh Connection device for pipes
CA2490176C (en) 2004-02-27 2013-02-05 Fiberspar Corporation Fiber reinforced spoolable pipe

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US2458874A (en) * 1944-12-28 1949-01-11 Parker Appliance Co Coupling for tubes
US3690704A (en) * 1970-09-09 1972-09-12 Frigitronics Of Conn Inc Plastic tubing connector
US3679239A (en) * 1971-06-25 1972-07-25 Mcdonald Mfg Co A Y Compression coupling for plastic pipe
US4220359A (en) * 1978-05-30 1980-09-02 Gould Inc. Push-to-connect air brake fitting

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152617A3 (en) * 1984-02-22 1986-05-21 Anton Hummel Gmbh Metallwarenfabrik Sealing device
EP0152617A2 (en) * 1984-02-22 1985-08-28 Anton Hummel GmbH Metallwarenfabrik Sealing device
GB2286026B (en) * 1994-01-19 1997-08-06 Guest John D Improvements in or relating to grab rings
GB2286026A (en) * 1994-01-19 1995-08-02 Guest John D Split Grab Ring
US5603532A (en) * 1994-01-19 1997-02-18 Guest; John D. Grab rings
GB2300680A (en) * 1994-05-04 1996-11-13 Hepworth Building Prod Spigot and socket pipe joint with intermediate ring
US5988702A (en) * 1995-09-28 1999-11-23 Fiber Spar And Tube Corporation Composite coiled tubing end connector
GB2321288A (en) * 1995-09-28 1998-07-22 Fiber Spar And Tube Corp Composite coiled tubing end connector
WO1997012115A3 (en) * 1995-09-28 1997-05-22 Fiber Spar And Tube Corp Composite coiled tubing end connector
GB2321288B (en) * 1995-09-28 1999-12-01 Fiber Spar And Tube Corp Composite coiled tubing end connector
US8066033B2 (en) 1995-09-28 2011-11-29 Fiberspar Corporation Composite spoolable tube
US8678042B2 (en) 1995-09-28 2014-03-25 Fiberspar Corporation Composite spoolable tube
US7498509B2 (en) 1995-09-28 2009-03-03 Fiberspar Corporation Composite coiled tubing end connector
US8763647B2 (en) 2001-04-27 2014-07-01 Fiberspar Corporation Composite tubing
US7089645B2 (en) 2002-06-25 2006-08-15 Itt Manufacturing Enterprises, Inc. Method of manufacturing a high pressure fluid quick connect
WO2004001273A1 (en) * 2002-06-25 2003-12-31 Itt Manufacturing Enterprises, Inc. High pressure fluid quick connect
US6857667B2 (en) 2002-06-25 2005-02-22 Itt Manufacturing Enterprises, Inc. High pressure fluid quick connect
US8187687B2 (en) 2006-03-21 2012-05-29 Fiberspar Corporation Reinforcing matrix for spoolable pipe
US8839822B2 (en) 2006-03-22 2014-09-23 National Oilwell Varco, L.P. Dual containment systems, methods and kits
US8671992B2 (en) 2007-02-02 2014-03-18 Fiberspar Corporation Multi-cell spoolable composite pipe
US8746289B2 (en) 2007-02-15 2014-06-10 Fiberspar Corporation Weighted spoolable pipe
WO2009016287A2 (en) * 2007-06-29 2009-02-05 Legris Sa Connector with improved outer washing
FR2918150A1 (en) * 2007-06-29 2009-01-02 Legris Sa Outdoor washing connection easy
WO2009016287A3 (en) * 2007-06-29 2009-05-22 Legris Sa Connector with improved outer washing
US8985154B2 (en) 2007-10-23 2015-03-24 Fiberspar Corporation Heated pipe and methods of transporting viscous fluid
US9127546B2 (en) 2009-01-23 2015-09-08 Fiberspar Coproation Downhole fluid separation
US8955599B2 (en) 2009-12-15 2015-02-17 Fiberspar Corporation System and methods for removing fluids from a subterranean well
US9206676B2 (en) 2009-12-15 2015-12-08 Fiberspar Corporation System and methods for removing fluids from a subterranean well
US9890880B2 (en) 2012-08-10 2018-02-13 National Oilwell Varco, L.P. Composite coiled tubing connectors
CN103807526A (en) * 2012-11-13 2014-05-21 南车青岛四方机车车辆股份有限公司 Clamping sleeve type metal sealing pipe joint and using method thereof
CN103807526B (en) * 2012-11-13 2017-02-22 中车青岛四方机车车辆股份有限公司 Clamping sleeve type metal sealing pipe joint and using method thereof
WO2017194691A1 (en) * 2016-05-11 2017-11-16 J Van Beugen Beheer B.V. Apparatus and method for restricting a movement of a pipe

Also Published As

Publication number Publication date
DE3131690C2 (en) 1984-12-13
GB2103744B (en) 1984-11-28
DE3131690A1 (en) 1983-02-24

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