WO2001069119A1 - A pipe connector means - Google Patents

A pipe connector means Download PDF

Info

Publication number
WO2001069119A1
WO2001069119A1 PCT/GB2001/001007 GB0101007W WO0169119A1 WO 2001069119 A1 WO2001069119 A1 WO 2001069119A1 GB 0101007 W GB0101007 W GB 0101007W WO 0169119 A1 WO0169119 A1 WO 0169119A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
pipe
pipe connector
connector means
means according
Prior art date
Application number
PCT/GB2001/001007
Other languages
French (fr)
Other versions
WO2001069119A9 (en
Inventor
Neil Clarke
Original Assignee
Crane Limited
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 Crane Limited filed Critical Crane Limited
Priority to AU37598/01A priority Critical patent/AU3759801A/en
Priority to GB0124437A priority patent/GB2365503A/en
Publication of WO2001069119A1 publication Critical patent/WO2001069119A1/en
Publication of WO2001069119A9 publication Critical patent/WO2001069119A9/en

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
    • F16L19/00—Joints 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
    • F16L19/06—Joints 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 in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/065—Joints 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 in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring

Definitions

  • the present invention relates to a pipe connector
  • FIG. 1 a valve 10 is joined to a pipe 12 by a compression nut 14 and a compression sleeve 16, which fits inside a recess on the fitting side of the nut 14.
  • the nut 14 is attached to the valve 10 via an external screw thread 15 on joint part of the valve 10.
  • the end of the pipe 12 has been placed in one orifice 18 of the valve 10.
  • the nut 14 is then tightened on the screw thread 15.
  • the sleeve 16 that is contained within it is plastically deformed between the outside edge of the nut 14 and the edge of the orifice 18 of the valve 10. Upon application of sufficient pressure the deformation results in a fluid tight seal between the pipe 12 and the sleeve 16.
  • a nut 14 specifically designed to f t the screw thread 15 is required and a sleeve 16 that fits it.
  • the present invention is directed to a pipe connector means comprising an annular sleeve made of a deformable plastics material or metal in which the sleeve is equipped with a stopper part at one end and on its mside with a g ⁇ pper portion, such that when pushed or screwed into the connection part of a pipe fitting or valve the sleeve is deformed inwards such that the g ⁇ pper portion holds a pipe to be connected thereto thus creating a fluid tight seal.
  • the pipe connector means can be pre-fitted to pipe fittings and valves before they leave the factory and are therefore ready for installation with appropriate pipework, merely requiring tightening of the pipe connector means at the time upon oining of the pipe in the fitting.
  • the pipe connector means as it comprises a plastics material or metal, will work with appropriate sizing within any suitable joint without the necessity of ensuring for instance that the thread or joint are correct for the system concerned. This provides a considerably more flexible pipe connector means.
  • the stopper part prevents the pipe connector means being pushed too far into the fitting .
  • the stopper part is a flange.
  • the flange has the form of a nut. This enables the pipe connector means to be screwed into the fitting by a tool such as a spanner due to the resistance encountered from threading or similar attachment devices on the inside of the orifice of the pipe fitting.
  • the pipe connector means is equipped with an 0 ring on its inside. This assists in providing a liquid tight seal to the pipe.
  • the pipe connector means is also equipped with an inner end stop. This stops a pipe being pushed too far into the fitting.
  • the end stop is a lip.
  • one or more longitudinal slots are provided in the sleeve at the end opposite to the stopper part.
  • the slot or slots assist in the inward deformation of the sleeve, thus making installation of the pipe connector means easier.
  • the outer surface of the sleeve is provided with a coating of semi-hardening sealant.
  • sealant Pre-application of sealant during manufacture removes the need for sealant to be applied during installation, and provides a better seal.
  • Figure 2 shows an end perspective view and a cross section of a pipe connector according to the present invention
  • Figure 3 shows a cross section of a pipe fitting equipped with the pipe connector shown in
  • Figure 2; and Figure 4 shows an end perspective view and a cross section of a modified pipe connector according to the present invention.
  • FIG. 2 shows a pipe connector 20 according to the present invention.
  • the pipe connector 20 is made from an appropriate plastics material or metal. It comprises an elongate sleeve 22, which at one end is equipped with a head abutment 23.
  • the outside surface of the sleeve 22 is provided with a screw thread 21 to cooperate with a corresponding thread on a pipe fitting.
  • the inside of the sleeve 22 is equipped annularly with one or more projections 24, which form a gripper portion.
  • the head abutment 23 has in this case the form of a nut, to assist the screwing in of the connector 20.
  • the head abutment 23 also stops the connector 20 being pushed too far into a fitting.
  • the connector 20 is also equipped with an inwardly facing lip 25 at the opposite end to the head 23 to stop a pipe being pushed too far into a fitting.
  • Figure 3 shows a cross section of a pipe fitting 30 with a pipe 32 connected to it via pipe connector 20.
  • the pipe connector 20 fits into an orifice 34 of the fitting 30 between it and the pipe 32.
  • the internal surface of the orifice 34 of the pipe fitting 30 is equipped with a parallel or tapered screw thread to cooperate with the thread 21 on the connector 20.
  • the pipe connector 20 has been screwed into the fitting 30, it is thereby deformed inwardly and thus tightly grips the smooth outside surface of the pipe 32, by projections or gripper portion 24. A fluid-tight seal is thus created.
  • Figure 4 shows a modified version of the pipe connector 20 in which, at the head end 23, it is equipped with an annular 0 ring 37 which fits in an annular groove 36 on the internal surface of the head 23. This enables better sealing between the connector 20 and an inserted pipe.
  • the pipe connector 20 is provided with one or more longitudinal slots 38 in the sleeve 22, at the end having the projections 24.
  • the slots 38 assist in the inward deformation of the pipe connector 20 when it is screwed into a fitting.
  • four slots 38 are provided, spaced equally around the sleeve 22, but a greater or lesser number of slots is also efficacious.
  • a further embodiment of the pipe connector 20 comprises a layer of semi-hardening sealant applied to the thread 21 of the connector 20. This assists in providing a leak-tight seal between the connector 20 and the fitting 30, and, by being pre-applied during manufacture, offers the advantage that the installer does not need to apply any sealant during the installation process .

Landscapes

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

Abstract

A pipe connector means (20) comprises an annular sleeve (22) made of a deformable plastics material or metal, the sleeve (22) being equipped with a stopper part (23) at one end and on its inside with a gripper portion (24), such that when pushed or screwed into the connection part (34) of a pipe fitting (30) or valve the sleeve (22) is deformed inwards such that the gripper portion (24) holds a pipe (32) to be connected thereto thus creating a fluid tight seal. To improve the seal, an O-ring (37) may be provided inside the connector means (20), and the outer surface of the sleeve (22) may be coated with semi-hardening sealant. Longitudinal slots (38) provided in the sleeve (22) assist in the inward deformation.

Description

A Pipe Connector Means
The present invention relates to a pipe connector
means .
Previously when joining sections of piping to fittings or valves it has been necessary to use some type of individual joining method. Such joining methods have included welding, soldering, screw threaded attachment to a nut on a flange or a compression sleeve and compression nut attached to the fitting or valve. In the case of the latter, this is shown in Figure 1. In Figure 1 a valve 10 is joined to a pipe 12 by a compression nut 14 and a compression sleeve 16, which fits inside a recess on the fitting side of the nut 14. The nut 14 is attached to the valve 10 via an external screw thread 15 on joint part of the valve 10. The end of the pipe 12 has been placed in one orifice 18 of the valve 10. The nut 14 is then tightened on the screw thread 15. As the nut 14 is tightened the sleeve 16 that is contained within it is plastically deformed between the outside edge of the nut 14 and the edge of the orifice 18 of the valve 10. Upon application of sufficient pressure the deformation results in a fluid tight seal between the pipe 12 and the sleeve 16. As can be clearly seen from the example a nut 14 specifically designed to f t the screw thread 15 is required and a sleeve 16 that fits it.
The disadvantage of all of these previously proposed connection means is that they have to be fitted in situ and are individual to the fitting or valve concerned.
It is an aim of the present invention to provide a pipe connector means for joining a pipe fitting or valve to a pipe which overcomes these previously mentioned disadvantages .
Accordingly the present invention is directed to a pipe connector means comprising an annular sleeve made of a deformable plastics material or metal in which the sleeve is equipped with a stopper part at one end and on its mside with a gπpper portion, such that when pushed or screwed into the connection part of a pipe fitting or valve the sleeve is deformed inwards such that the gπpper portion holds a pipe to be connected thereto thus creating a fluid tight seal.
This provides the advantage that the pipe connector means can be pre-fitted to pipe fittings and valves before they leave the factory and are therefore ready for installation with appropriate pipework, merely requiring tightening of the pipe connector means at the time upon oining of the pipe in the fitting. Furthermore the pipe connector means, as it comprises a plastics material or metal, will work with appropriate sizing within any suitable joint without the necessity of ensuring for instance that the thread or joint are correct for the system concerned. This provides a considerably more flexible pipe connector means. The stopper part prevents the pipe connector means being pushed too far into the fitting .
Advantageously the stopper part is a flange. Preferably the flange has the form of a nut. This enables the pipe connector means to be screwed into the fitting by a tool such as a spanner due to the resistance encountered from threading or similar attachment devices on the inside of the orifice of the pipe fitting.
Preferably the pipe connector means is equipped with an 0 ring on its inside. This assists in providing a liquid tight seal to the pipe.
Advantageously the pipe connector means is also equipped with an inner end stop. This stops a pipe being pushed too far into the fitting. Preferably the end stop is a lip.
In a preferred embodiment, one or more longitudinal slots are provided in the sleeve at the end opposite to the stopper part. The slot or slots assist in the inward deformation of the sleeve, thus making installation of the pipe connector means easier.
Advantageously, the outer surface of the sleeve is provided with a coating of semi-hardening sealant. Pre- application of sealant during manufacture removes the need for sealant to be applied during installation, and provides a better seal.
An example of a pipe connector means made in accordance with the present invention will now be described below in relation to the attached drawings, in which: Figure 2 shows an end perspective view and a cross section of a pipe connector according to the present invention; Figure 3 shows a cross section of a pipe fitting equipped with the pipe connector shown in
Figure 2; and Figure 4 shows an end perspective view and a cross section of a modified pipe connector according to the present invention.
Figure 2 shows a pipe connector 20 according to the present invention. The pipe connector 20 is made from an appropriate plastics material or metal. It comprises an elongate sleeve 22, which at one end is equipped with a head abutment 23. The outside surface of the sleeve 22 is provided with a screw thread 21 to cooperate with a corresponding thread on a pipe fitting. The inside of the sleeve 22 is equipped annularly with one or more projections 24, which form a gripper portion. The head abutment 23 has in this case the form of a nut, to assist the screwing in of the connector 20. The head abutment 23 also stops the connector 20 being pushed too far into a fitting. The connector 20 is also equipped with an inwardly facing lip 25 at the opposite end to the head 23 to stop a pipe being pushed too far into a fitting.
Figure 3 shows a cross section of a pipe fitting 30 with a pipe 32 connected to it via pipe connector 20. As can be seen the pipe connector 20 fits into an orifice 34 of the fitting 30 between it and the pipe 32. The internal surface of the orifice 34 of the pipe fitting 30 is equipped with a parallel or tapered screw thread to cooperate with the thread 21 on the connector 20. As can be seen, as the pipe connector 20 has been screwed into the fitting 30, it is thereby deformed inwardly and thus tightly grips the smooth outside surface of the pipe 32, by projections or gripper portion 24. A fluid-tight seal is thus created. Figure 4 shows a modified version of the pipe connector 20 in which, at the head end 23, it is equipped with an annular 0 ring 37 which fits in an annular groove 36 on the internal surface of the head 23. This enables better sealing between the connector 20 and an inserted pipe.
Also, the pipe connector 20 is provided with one or more longitudinal slots 38 in the sleeve 22, at the end having the projections 24. The slots 38 assist in the inward deformation of the pipe connector 20 when it is screwed into a fitting. Preferably, four slots 38 are provided, spaced equally around the sleeve 22, but a greater or lesser number of slots is also efficacious.
A further embodiment of the pipe connector 20 comprises a layer of semi-hardening sealant applied to the thread 21 of the connector 20. This assists in providing a leak-tight seal between the connector 20 and the fitting 30, and, by being pre-applied during manufacture, offers the advantage that the installer does not need to apply any sealant during the installation process .

Claims

Claims
1. A pipe connector means comprising an annular sleeve made of a deformable plastics material or metal in which the sleeve is equipped with a stopper part at one end and on its inside with a gripper portion, such that when pushed or screwed into the connection part of a pipe fitting or valve the sleeve is deformed inwards such that the gripper portion holds a pipe to be connected thereto thus creating a fluid tight seal.
2. A pipe connector means according to claim 1, in which the stopper part is a flange.
3. A pipe connector means according to claim 2, which the flange has the form of a nut.
4. A pipe connector means according to any preceding claim, and further equipped with an O-rmg on its side.
5. A pipe connector means according to any preceding claim, and further equipped with an inner end stop.
6. A pipe connector means according to claim 5, in whicn the end stop is a lip.
7. A pipe connector means according to any preceding claim, in which one or more longitudinal slots are provided in the sleeve, at the end opposite to the stopper part.
8. A pipe connector means according to any preceding claim, in which the outer surface of the sleeve is proved with a coating of semi-hardening sealant.
PCT/GB2001/001007 2000-03-16 2001-03-08 A pipe connector means WO2001069119A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU37598/01A AU3759801A (en) 2000-03-16 2001-03-08 A pipe connector means
GB0124437A GB2365503A (en) 2000-03-16 2001-03-08 A pipe connector means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0006419A GB0006419D0 (en) 2000-03-16 2000-03-16 A pipe connector means
GB0006419.6 2000-03-16

Publications (2)

Publication Number Publication Date
WO2001069119A1 true WO2001069119A1 (en) 2001-09-20
WO2001069119A9 WO2001069119A9 (en) 2002-08-08

Family

ID=9887792

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/001007 WO2001069119A1 (en) 2000-03-16 2001-03-08 A pipe connector means

Country Status (3)

Country Link
AU (1) AU3759801A (en)
GB (2) GB0006419D0 (en)
WO (1) WO2001069119A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2356868A1 (en) * 1976-07-01 1978-01-27 Pont A Mousson Connector sleeve between two pipe ends - has collar threaded between sleeve and pipe for points on split end of collar to be pushed into pipe by taper on sleeve
GB2060801A (en) * 1979-09-12 1981-05-07 Giacomini Rubinetterie A nipple for a valve, faucet, coupling element, union or the like
GB2197410A (en) * 1986-10-11 1988-05-18 Samuel Booth & Company Limited Pipe coupling
EP0657669A1 (en) * 1993-12-13 1995-06-14 John Derek Guest Seal arrangement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2356868A1 (en) * 1976-07-01 1978-01-27 Pont A Mousson Connector sleeve between two pipe ends - has collar threaded between sleeve and pipe for points on split end of collar to be pushed into pipe by taper on sleeve
GB2060801A (en) * 1979-09-12 1981-05-07 Giacomini Rubinetterie A nipple for a valve, faucet, coupling element, union or the like
GB2197410A (en) * 1986-10-11 1988-05-18 Samuel Booth & Company Limited Pipe coupling
EP0657669A1 (en) * 1993-12-13 1995-06-14 John Derek Guest Seal arrangement

Also Published As

Publication number Publication date
GB0124437D0 (en) 2001-12-05
GB0006419D0 (en) 2000-05-03
WO2001069119A9 (en) 2002-08-08
AU3759801A (en) 2001-09-24
GB2365503A (en) 2002-02-20

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