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WO2007011953A1 - Ensemble raccord pour assurer l'etancheite d'un tube ondule par deformation et methode d'utilisation de cet ensemble - Google Patents

Ensemble raccord pour assurer l'etancheite d'un tube ondule par deformation et methode d'utilisation de cet ensemble Download PDF

Info

Publication number
WO2007011953A1
WO2007011953A1 PCT/US2006/027888 US2006027888W WO2007011953A1 WO 2007011953 A1 WO2007011953 A1 WO 2007011953A1 US 2006027888 W US2006027888 W US 2006027888W WO 2007011953 A1 WO2007011953 A1 WO 2007011953A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
insert
corrugated tube
fitting assembly
connecting means
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.)
Ceased
Application number
PCT/US2006/027888
Other languages
English (en)
Inventor
Mehdi Golafshani
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of WO2007011953A1 publication Critical patent/WO2007011953A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
    • F16L25/0036—Joints for corrugated pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
    • F16B21/18—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details
    • F16B21/186—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details external, i.e. with contracting action

Definitions

  • This present invention is generally directed to a fitting assembly for sealing a corrugated tube and more specifically directed to sealing a portion of the fitting assembly with the corrugated tube by deformably compressing a ridge of the corrugated tube between an insert and a split ring.
  • sections of pipe, tubing, or conduit are typically connected to one another to provide for the flow of fluids within a system.
  • disconnection for service, repair, routine maintenance, or restructuring of the system often involves cutting or otherwise physically separating the sections. Disconnection usually involves cutting using high speed rotary tools. When the sections being cut apart are metal, sparks are often generated, which creates an undesirable condition. Even if the sections being cut are plastic, dust or flying debris may be generated. In either case, the integrity of the pipe, tubing, or conduit is compromised, and new sections must be fabricated and reinstalled.
  • disconnection may also involve cutting or some other physical method of separation (e.g., melting the adhesive), or it may involve effecting a chemical change to the adhesive. Melting the adhesive or using chemical techniques to separate the sections are often time consuming and costly practices. Reassembly of the system generally involves adhesively connecting new systems of pipe..
  • connectors and fittings which provide releasable sealing capability are preferred for applications where disassembly is likely.
  • Various connectors and fittings having releasable sealing capability are used to seal the outside surfaces of sections of pipe, tubing, or conduit with one another.
  • inside and outside surfaces have ridges and troughs making sealing with prior art connectors and fittings ineffective.
  • sealing on the outside surface of tubing is undesirable because walls of the tubing can become unintentionally distorted when the connector is secured thereby increasing the potential for leakage.
  • a fitting assembly for corrugated tubing includes a body having first connector, a bore, and a first shoulder positioned within the bore; an insert having a first external surface, a second external surface of increased outside diameter, and a transition area intermediate the first external surface and the second external surface, the insert being receivable in the bore of the body; a locking device having a through bore defining an internal surface, a second shoulder on the internal surface, a section of the internal surface further defining a substantially conical section, a retainer inwardly projecting from the internal surface, and a second connector cooperable with the first connector; and a resilient ring having a radially directed split therethrough for allowing the ring to radially flex in response to forces acting thereon, the ring being movably retained between the second shoulder and the retainer.
  • an assembly for a fitting includes an adapter or other body having a first bore and first connector; an insert having a second bore and being sealingly engaged with the adapter; a nut or other locking device having a third bore and having a second connector engaged with the first connector; and a split ring positioned over the insert and between the nut and the adapter.
  • a method of using a fitting assembly on a corrugated tube includes the steps of providing a fitting assembly for corrugated tube; abutting an insert of the fitting assembly against a shoulder of a body of the fitting assembly to sealingly engage the insert with the body; inserting a split ring into a conically-shaped cavity section of a locking device; sliding the corrugated tube through the locking device and through the ring; securing the body to the locking device; and using the split ring to deform the corrugated tube against an outer surface of the insert.
  • FIG. 1 is an exploded cross sectional view of the fitting assembly for a corrugated tube.
  • FIG. 2 is a cross sectional view of a partially assembled fitting assembly for the corrugated tube showing the ring radially contracted.
  • FIG. 3 is a top view of an embodiment of the ring having contoured inside and sloping outside circumferential areas.
  • FIG. 4 is a cross sectional view of the ring illustrated in FIG. 3.
  • FIG. 5 is a cross sectional view of an enlarged section of the locking device illustrating the ring in a radially expanded state positioned over a ridge of the corrugated tube.
  • FIG. 6 is a cross sectional view of an enlarged section of the locking device illustrating the ring in a relaxed state positioned in a trough of the corrugated tube.
  • FIG. 7 is a cross sectional view of an enlarged section of the locking device, the insert and a portion of the body illustrating deformation of the corrugated tube.
  • FIG. 8 is a cross sectional view of body having the insert integral therewith.
  • a fitting assembly for sealing an end of a corrugated tube to create a gas or liquid seal is shown at 10.
  • the fitting assembly 10 includes a body 12, an insert 14, a locking device 16, and a ring 18 and can be used to connect lengths of corrugated tube, as an adapter to another coupling device or fitting, or to terminate a length of corrugated tube.
  • the sealing is effected between an inner diameter of the corrugated tube and an outer surface of the insert 14 by deforming at least one of the corrugations, for example, by causing a peak of a corrugation to fold over onto an adjacent trough of the corrugation.
  • the body 12 which can be an adapter to connect the fitting assembly 10 to other devices or fittings, includes a first connector 20 comprising male threads, a bore 22, and a first shoulder 24 positioned within the bore.
  • the bore 22 transitions to a reduced cross section 28 at the first shoulder 24.
  • first connector 20 is shown with male threads, the present invention is not limited in this regard as other connecting means may also be utilized including but not limited to bayonet type connections.
  • the body 12 may also have male threads 25 located on an end opposite the end at which the first connector is shown to facilitate the connection of the body to any other device having connectable female threads. In the alternative, the body 12 may be capped at the end opposite the end at which the first connector 20 is located.
  • the insert 14 is configured for receiving the corrugated tube (shown at 26 in FIG. 2) thereon.
  • the insert 14 has a bore 29 and a transition area 32.
  • the transition area 32 is defined by a curved surface that extends radially from a portion of the external surface of the insert to another portion of the external surface having an increased outside diameter.
  • the insert 14 is coaxially received in the bore 22, and at least a portion of one end 34 of the insert 14 abuts at least a portion of the first shoulder 24.
  • the insert 14 is sealingly engaged with the body 12. While the insert 14 is described as being sealing engaged with the body, the present invention is not limited in this regard as the insert may be sealingly engaged with the first shoulder 24, the reduced cross section 28, or a combination thereof.
  • the locking device 16 which may be a nut, has an internal surface 30 defining a through bore 37.
  • a second connector 36 comprising female threads is disposed on the internal surface.
  • a section of the internal surface 30 further defines a conical section 38.
  • the locking device 16 also includes a second shoulder 40 and a retainer 42 disposed between the second connector 36 and the first section 38.
  • the ring 18 is made of a resilient material and has a radial split 48 therethrough for allowing the ring to radially flex in response to forces acting thereon.
  • the ring 18 is retained between the second shoulder 40 and the retainer 42 and includes an inside surface 50 that engages a trough of the corrugated tube 26.
  • An outside surface 52 of the ring 18 is angled to substantially complement the conical section 38.
  • the inside surface 50 is shown as having a rounded contour to mate with the trough of the corrugated tube 26, the present invention is not limited in this regard, and the inside surface may be a flat or substantially flat wall with or without a suitable chamfer or radius. Referring to FIG.
  • the fitting assembly 10 is assembled on the corrugated tube 26.
  • the corrugated tube 26 is inserted into the locking device 16 and is retained therein via the ring 18.
  • the corrugated tube 26 is also inserted over the insert 14, and the body 12 is releasably secured to the locking device 16 via the first connector 20 and the second connector 36.
  • the second connector 36 is described as having female threads, the present invention is not limited in this regard as other connecting means may also be utilized including but not limited to bayonet type connections.
  • the ring 18 retains the corrugated tube 26 in the locking device 16 until the insert 14 (FIG. 7) is received in the end of the corrugated tube and the locking device is connected to the body 12.
  • the ring 18 is shown abutted against the retainer 42 with the ring forced open by the ridge 54 of the corrugated tube 26 and expanded over the ridge.
  • the ring 18 is shown in a contracted state (not forced fully open) so that an inside surface 50 thereof fits into a trough 56 of the corrugated tube 26.
  • the ring 18 is shown abutting the second shoulder 40 with the ring contracted so that the inside surface 50 of the ring fits into the trough 56.
  • the ring 18 is butted against the second shoulder 40 and the inclined surface of the transition area 32 is urged in the direction of the ring.
  • the transition area 32 is further urged in the direction of the ring 18, and the corrugated tube 26 (namely, the ridge of the corrugation) is frictionally held on the inclined surface of the transition area 32.
  • the transition area 32 is still further urged in the direction of the ring 18, and the ridge of the corrugation is forced by a side 58 of the ring to deform and fold over into the trough of the corrugation.
  • the ridge is fully folded and collapsed, the material of the corrugation is held against the transition area 32, thereby creating a seal.
  • a body 112 has an integral insert 114.
  • the insert 114 is attached to the body 112 and coaxially aligned therewith. Because the outer diameter of the insert 114 is less than the outer diameter of the body 112, a transition area 132 is formed between the insert and the body.
  • a connector 120 is disposed on the outer surface of the body 112 to facilitate the connection of the body and a locking device.
  • the connector 120 may be male threads, which may be received by appropriate female threads on the locking device.
  • Male threads 125 may also be disposed on an end of the body 112 opposite the end at which the insert 114 is integrally formed to allow for the connection of the body to another fitting or the like.
  • the insert 14, 114 is manufactured from a material softer than the corrugated tube 26.
  • the body 12, 112 is manufactured from a material softer than the corrugated tube 26.
  • the insert 14, 114 is said to be softer than the corrugated tube 26
  • the present invention is not limited in this regard as in another embodiment of the present invention the insert may be manufactured from a material which is as hard as or harder than the corrugated tube.
  • the body 12, 112 is said to be softer than the corrugated tube 26
  • the present invention is not limited in this regard as in another embodiment the body may be manufactured from a material which is as hard as or harder than the corrugated tube.
  • a method of using the fitting assembly 10 on a corrugated tube 26 includes the steps of providing the fitting assembly; abutting the insert 14 against the first shoulder 24 to sealingly engage the insert with the body 12; contracting the ring 18 radially; inserting the ring through the retainer 42 into a cavity defined by the conical section 38, the second shoulder 40, and the retainer; releasing the ring into a relaxed and expanded state; sliding the corrugated tube through the locking device 16 and though the ring thereby abutting the ring against the retainer 42 and expanding the ring radially over at least one ridge 54 of the corrugated tube; positioning an inside surface 50 of the ring into a trough 56 of the corrugated tube; engaging the first and second connectors to removably secure the body to the locking device and to slide the ring within the cavity toward the second shoulder 40 forcing the ring to radially contract into the trough and sliding the corrugated tube onto the transition area; tightening the first and second connector

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

L'invention concerne un ensemble raccord pour un tube ondulé (26), cet ensemble comprenant un corps (12) comportant un premier moyen de raccordement (20), un insert (14), un moyen de verrouillage (16) comportant un second moyen de raccordement (36), ainsi qu'une bague (18) élastique. L'insert (14) est emboîté de façon étanche dans le corps (12) et il comprend une zone de transition présentant un diamètre extérieur accru. Le moyen de verrouillage (20) comprend une lèvre (42) dirigée vers l'intérieur, une section sensiblement conique (38) et un élément de retenue disposé entre le second moyen de raccordement et cette section conique (38). Le premier et le second moyen de raccordement (20, 36) viennent en prise de façon à fixer le corps (12) au moyen de verrouillage (16) de façon détachable et à faire coulisser la bague (18) à l'intérieur de la section conique (38) en direction de la lèvre (42) pour forcer la bague (18) à se contracter radialement dans un creux du tube ondulé (26) et faire coulisser le tube ondulé (26) sur la zone de transition. Lorsque le premier et le second moyen de raccordement (20, 36) s'emboîtent davantage l'un dans l'autre, la bague (18) fait pression sur une nervure du tube ondulé (26) et la comprime contre la zone de transition, une liaison étanche étant ainsi créée à cet endroit.
PCT/US2006/027888 2005-07-19 2006-07-18 Ensemble raccord pour assurer l'etancheite d'un tube ondule par deformation et methode d'utilisation de cet ensemble Ceased WO2007011953A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US70107105P 2005-07-19 2005-07-19
US60/701,071 2005-07-19

Publications (1)

Publication Number Publication Date
WO2007011953A1 true WO2007011953A1 (fr) 2007-01-25

Family

ID=37309801

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/027888 Ceased WO2007011953A1 (fr) 2005-07-19 2006-07-18 Ensemble raccord pour assurer l'etancheite d'un tube ondule par deformation et methode d'utilisation de cet ensemble

Country Status (2)

Country Link
US (1) US20070018449A1 (fr)
WO (1) WO2007011953A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7690695B2 (en) * 2005-07-18 2010-04-06 Titeflex Corporation Sealing fitting and seal seat for stainless steel tubing
US20070284878A1 (en) * 2005-07-18 2007-12-13 Titeflex Corporation Sealing fitting for stainless steel tubing
ES2649028B1 (es) * 2016-07-07 2018-09-17 Tubing Food, S.L. Dispositivo para la conexión estanca de un tubo corrugado con un segundo elemento tubular

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6019399A (en) * 1996-05-09 2000-02-01 Parker-Hannifin Corporation Split-ring fluid coupling for corrugated tubing and method of assembly
US6428052B1 (en) * 1996-08-08 2002-08-06 Omega Flex, Inc. Fitting for use with corrugated tubing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62113993A (ja) * 1985-11-13 1987-05-25 株式会社　トヨツクス 螺旋補強ホ−ス用継手
JPH0339673Y2 (fr) * 1987-11-10 1991-08-21
JPH0342302Y2 (fr) * 1987-11-10 1991-09-04
US5222772A (en) * 1989-05-02 1993-06-29 Mcgraw Doonan D Connector fittings and method of connecting same
US5799989A (en) * 1996-08-08 1998-09-01 Omega-Flex, Inc. Corrugated tubing fitting
AU2002235534B2 (en) * 2001-02-06 2006-04-06 Swagelok Company Tube fitting with separable tube gripping ring
US7267372B2 (en) * 2001-10-11 2007-09-11 Pi-Thon Designs, Inc. Tube connector
US7055868B2 (en) * 2004-07-09 2006-06-06 Highlands Corporation Corrugated tube fitting

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6019399A (en) * 1996-05-09 2000-02-01 Parker-Hannifin Corporation Split-ring fluid coupling for corrugated tubing and method of assembly
US6428052B1 (en) * 1996-08-08 2002-08-06 Omega Flex, Inc. Fitting for use with corrugated tubing

Also Published As

Publication number Publication date
US20070018449A1 (en) 2007-01-25

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