WO2002014729A1 - A hose and pipe coupling arrangement - Google Patents

A hose and pipe coupling arrangement Download PDF

Info

Publication number
WO2002014729A1
WO2002014729A1 PCT/GB2001/003593 GB0103593W WO0214729A1 WO 2002014729 A1 WO2002014729 A1 WO 2002014729A1 GB 0103593 W GB0103593 W GB 0103593W WO 0214729 A1 WO0214729 A1 WO 0214729A1
Authority
WO
WIPO (PCT)
Prior art keywords
socket
hose
pipe
arrangement according
recess
Prior art date
Application number
PCT/GB2001/003593
Other languages
French (fr)
Other versions
WO2002014729A9 (en
Inventor
James Peter Whatley
David Charles Smythe
Michael David Gunner
Original Assignee
Thermopol 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 Thermopol Limited filed Critical Thermopol Limited
Priority to AU2001276561A priority Critical patent/AU2001276561A1/en
Publication of WO2002014729A1 publication Critical patent/WO2002014729A1/en
Publication of WO2002014729A9 publication Critical patent/WO2002014729A9/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
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/0036—Joints for corrugated pipes
    • F16L25/0045—Joints for corrugated pipes of the quick-acting type
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/32—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses comprising parts outside the hoses only

Definitions

  • This invention relates to an arrangement for coupling a hose and a pipe.
  • the end of a hose is provided with a tightenable clamp encircling it, coupling being achieved by pulling the end of the hose over the end of a pipe and clamping it thereto via the tightenable clamp.
  • the end of the hose must normally be capable of expanding to fit over the end of the pipe, and as the clamp is preferably secured to the hose even in the hose's unexpanded state so as to withstand the rigours of pre-assembly handling, such an arrangement presents difficulties in use.
  • a hose and pipe coupling arrangement including a socket at one end of the pipe, wherein the socket is dimensioned and shaped to receive an end portion of the hose as a close fit therein and wherein the inner surface of the socket couples with the outer surface of the hose by means of arecess in one surface accommodating a protuberance of the other surface and the arrangement is such that, in use, pressure of fluid flowing through the hose and socket urges the protuberance into the recess so as to resist uncoupling of the hose from the socket.
  • the recess and protuberance may be provided circumferentially around the hose and inner surface of the socket.
  • the recess could be located in the inner surface of the socket and the protuberance formed by or on the outer surface of the end of the hose.
  • the recess could be located in an outer surface of the hose, the protuberance being formed by or on the inner surface of the socket.
  • the recess and protuberance could be arcuate in shape in the longitudinal direction of the pipe and hose. If desired, the coupling between the inner surface of the socket and the outer surface of the end of the hose may be enhanced by the presence of an adhesive.
  • the socket may be formed as an integral part of the end of the pipe.
  • the socket may be fast with the end of the pipe, for example being fixed to the end portion of the pipe by a clip portion of the socket or by a taper lock.
  • the socket could be formed of metal or of plastics material.
  • Fig. 1 is a partial longitudinal section through a hose, socket and pipe assembly
  • Fig. 2 is a partial longitudinal section through an alternative hose, socket and pipe assembly
  • Fig. 3 is a longitudinal section through a socket for the example of Fig. 2;
  • Figs. 4 - 7 are partial longitudinal sections through further alternative hose, socket and pipe assemblies.
  • Figs. 8a - 8j are detailed views of various ways of fixing a hose convolution to a socket.
  • reference numeral 1 designates a hose made, for example, of a thermoplastic material, having a series of convolutions 2 along its length providing protuberances.
  • Reference numeral 3 designates a pipe made, for example, of metal such as aluminium, formed with an extension of metal such as aluminium or a thermoplastic material, for example, providing an annular socket 4 (which could be integral with the pipe 3 or a separate item fast with the pipe 3).
  • An end portion of the socket 4 is formed with an internal annular recess 5 which receives the endmost convolution 2 of the hose 1 after the end portion of the hose 1 has been inserted into the socket 4, so that the socket 4 grips on to the convolution.
  • internal fluid pressure for example air pressure
  • socket 4 is a separate item of metal such as aluminium or a thermoplastic material, for example, formed with a portion 7 which provides internal annular recess 5, which receives the endmost convolution 2 of the hose
  • the socket 4 is also formed with an annular clip portion 8 having an annular recess which receives the end of pipe 3, the portion 8 being fast with the pipe 3 by direct material to material fixation - that is direct metal to metal fixation if the socket 4 and pipe 3 are each of metal, such as aluminium.
  • internal fluid pressure forces the hose 1 into a tight contact with socket 4, creating friction to prevent displacement and increase the fluid seal.
  • Fig. 3 shows in more detail an example of socket 4 of Fig. 2, for example being made out of aluminium for use with a pipe of about 90mm internal diameter, reference numeral 9 designating the recess of the clip portion 8.
  • additional retention of the hose 1 to the socket 4 may be achieved by the use of an adhesive between them.
  • the hose 1 does not have convolutions, but has a groove 10 in which a protuberance 11 on the extension providing the socket 4 is received.
  • an internal crimp may be provided via a grip ring deformed into the recess by mechanical means during the production process - see Fig.6 in which reference numeral 12 designates such a crimp ring.
  • Another form of fixing could be provided by making the hose 1 captive within the socket 4 by adding an end block to the socket 4 after the insertion of a convolution 2 into recess 5, the hose containing an internal rigid ring - see Fig. 7 in which reference numeral 13 designates such an end block and reference numeral 14 such an internal ring.
  • Figs. 8a - 8j show details of particular ways of providing such an end block.
  • Figs. 8a and 8h it is provided by a circular clip; in Figs. 8b and 8e it is held by a spring member 15; in Fig. 8c it is provided by a bayonet fitting; in Fig. 8d it has been heat shrunk in place; in Fig. 8f it is held in place by a tapered portion inside the recess of socket 4, forming a taper lock; in Fig. 8g it is provided by a radial pin; in Fig. 8i, it is held in place by adhesive between one of its arms and the outer surface of the socket 4; and in Fig. 8j it is screwed to an inside threaded surface of the socket 4.
  • the spring member 15 is a finger spring which contains reverse facing spring teeth that flatten to allow assembly, but dig into the socket 4 to resist removal if pulled back against the direction of the teeth. This has the advantage that no special form or preparation is needed on the socket 4.
  • the socket may be attached to the pipe by a taper lock.

Abstract

A hose pipe coupling arrangement includes a socket (4) at one end of the pipe (3), wherein the socket (4) is dimensioned and shaped to receive an end portion of the hose (1) as a close fit therein and wherein the inner surface of the socket couples with the outer surface of the hose by means of a recess (5) in one surface accommodating a protuberance (2) of the other surface. The arrangement is such that, in use, pressure of fluid flowing through the hose (1) and socket (4) urges the protuberance (2) into the recess (5) so as to resist uncoupling of the hose (1) from the socket (4).

Description

A HOSE AND PIPE COUPLING ARRANGEMENT
This invention relates to an arrangement for coupling a hose and a pipe.
In many coupling arrangements the end of a hose is provided with a tightenable clamp encircling it, coupling being achieved by pulling the end of the hose over the end of a pipe and clamping it thereto via the tightenable clamp. However, as the end of the hose must normally be capable of expanding to fit over the end of the pipe, and as the clamp is preferably secured to the hose even in the hose's unexpanded state so as to withstand the rigours of pre-assembly handling, such an arrangement presents difficulties in use.
According to the present invention, there is provided a hose and pipe coupling arrangement including a socket at one end of the pipe, wherein the socket is dimensioned and shaped to receive an end portion of the hose as a close fit therein and wherein the inner surface of the socket couples with the outer surface of the hose by means of arecess in one surface accommodating a protuberance of the other surface and the arrangement is such that, in use, pressure of fluid flowing through the hose and socket urges the protuberance into the recess so as to resist uncoupling of the hose from the socket.
The recess and protuberance may be provided circumferentially around the hose and inner surface of the socket.
The recess could be located in the inner surface of the socket and the protuberance formed by or on the outer surface of the end of the hose. Alternatively, the recess could be located in an outer surface of the hose, the protuberance being formed by or on the inner surface of the socket.
The recess and protuberance could be arcuate in shape in the longitudinal direction of the pipe and hose. If desired, the coupling between the inner surface of the socket and the outer surface of the end of the hose may be enhanced by the presence of an adhesive.
The socket may be formed as an integral part of the end of the pipe.
Alternatively, the socket may be fast with the end of the pipe, for example being fixed to the end portion of the pipe by a clip portion of the socket or by a taper lock.
The socket could be formed of metal or of plastics material.
The present invention will now be described, by way of example, with reference to the accompanying drawings, in which:-
Fig. 1 is a partial longitudinal section through a hose, socket and pipe assembly;
Fig. 2 is a partial longitudinal section through an alternative hose, socket and pipe assembly;
Fig. 3 is a longitudinal section through a socket for the example of Fig. 2;
Figs. 4 - 7 are partial longitudinal sections through further alternative hose, socket and pipe assemblies; and
Figs. 8a - 8j are detailed views of various ways of fixing a hose convolution to a socket.
Referring first to Fig. 1, reference numeral 1 designates a hose made, for example, of a thermoplastic material, having a series of convolutions 2 along its length providing protuberances. Reference numeral 3 designates a pipe made, for example, of metal such as aluminium, formed with an extension of metal such as aluminium or a thermoplastic material, for example, providing an annular socket 4 (which could be integral with the pipe 3 or a separate item fast with the pipe 3). An end portion of the socket 4 is formed with an internal annular recess 5 which receives the endmost convolution 2 of the hose 1 after the end portion of the hose 1 has been inserted into the socket 4, so that the socket 4 grips on to the convolution. In use, internal fluid pressure (for example air pressure) forces the hose 1 into a tight contact with the socket 4, creating friction to prevent displacement and increase the fluid seal.
Referring now to Fig.2 (in which reference numeral 6 designates one of a series of reinforcing rings between convolutions 2), socket 4 is a separate item of metal such as aluminium or a thermoplastic material, for example, formed with a portion 7 which provides internal annular recess 5, which receives the endmost convolution 2 of the hose
1 in the same manner as the recess 5 in the Fig.1 example. The socket 4 is also formed with an annular clip portion 8 having an annular recess which receives the end of pipe 3, the portion 8 being fast with the pipe 3 by direct material to material fixation - that is direct metal to metal fixation if the socket 4 and pipe 3 are each of metal, such as aluminium.
Again, as in the Fig. 1 example (and in the following further examples), internal fluid pressure (for example air pressure) forces the hose 1 into a tight contact with socket 4, creating friction to prevent displacement and increase the fluid seal.
Fig. 3 shows in more detail an example of socket 4 of Fig. 2, for example being made out of aluminium for use with a pipe of about 90mm internal diameter, reference numeral 9 designating the recess of the clip portion 8.
In each of the above examples (and in the following further examples), additional retention of the hose 1 to the socket 4 may be achieved by the use of an adhesive between them.
Referring to Fig. 4, the hose 1 does not have convolutions, but has a groove 10 in which a protuberance 11 on the extension providing the socket 4 is received. Referring to Fig. 5, this shows a modification of the Fig. 1 example, the socket 4 being fast with the inside of the pipe 3 by virtue of its being tapered to form a taper lock.
For holding a hose convolution 2 in an internal annular recess 5 in the socket 4, an internal crimp may be provided via a grip ring deformed into the recess by mechanical means during the production process - see Fig.6 in which reference numeral 12 designates such a crimp ring.
Another form of fixing could be provided by making the hose 1 captive within the socket 4 by adding an end block to the socket 4 after the insertion of a convolution 2 into recess 5, the hose containing an internal rigid ring - see Fig. 7 in which reference numeral 13 designates such an end block and reference numeral 14 such an internal ring.
Figs. 8a - 8j show details of particular ways of providing such an end block. In
Figs. 8a and 8h, it is provided by a circular clip; in Figs. 8b and 8e it is held by a spring member 15; in Fig. 8c it is provided by a bayonet fitting; in Fig. 8d it has been heat shrunk in place; in Fig. 8f it is held in place by a tapered portion inside the recess of socket 4, forming a taper lock; in Fig. 8g it is provided by a radial pin; in Fig. 8i, it is held in place by adhesive between one of its arms and the outer surface of the socket 4; and in Fig. 8j it is screwed to an inside threaded surface of the socket 4.
In Figs. 8b and 8e, the spring member 15 is a finger spring which contains reverse facing spring teeth that flatten to allow assembly, but dig into the socket 4 to resist removal if pulled back against the direction of the teeth. This has the advantage that no special form or preparation is needed on the socket 4.
In the Figs. 8a - 8j examples, the socket may be attached to the pipe by a taper lock.

Claims

1. A hose and pipe coupling arrangement including a socket at one end of the pipe, wherein the socket is dimensioned and shaped to receive an end portion of the hose as a close fit therein and wherein the inner surface of the socket couples with the outer surface of the hose by means of a recess in one surface accommodating a protuberance of the other surface and the arrangement is such that, in use, the pressure of fluid flowing through the hose and socket urges the protuberance into the recess so as to resist uncoupling of the hose from the socket.
2. An arrangement according to Claim 1 , wherein the recess and the protuberance are provided circumferentially around the hose and inner surface of the socket.
3. An arrangement according to Claim 1 or 2, wherein the recess is located in the inner surface of the socket and the protuberance is formed by or on the outer surface of the hose.
■ 4. . An arrangement according to Claim 1 or 2, wherein the recess is located in an outer surface of the hose and the protuberance is formed by or on an inner surface of the socket.
5. An arrangement according to any preceding Claim, wherein the recess and protuberance are arcuate in shape in the longitudinal direction of the pipe and hose.
6. An arrangement according to any preceding Claim, wherein the coupling between the inner surface of the socket and outer surface of the hose is enhanced by the presence of an adhesive.
7. An arrangement according to any preceding Claim, wherein the socket is formed as an integral part of the end of the pipe.
8. An arrangement according to any one of Claims 1 to 6, wherein the socket is fast with the end of the pipe.
9. An arrangement according to Claim 8, wherein the socket is fixed to the end portion of the pipe by a clip portion of the socket.
10. An arrangement according to Claim 8, wherein the socket is fixed to the end portion of the pipe by a taper lock.
11. An arrangement according to Claim 10, wherein the socket has a tapered end portion received inside the end portion of the pipe.
12. An arrangement according to any preceding Claim, wherein the socket is formed of metal.
13. An arrangement according to any preceding Claim, wherein the socket is formed of a plastics material.
PCT/GB2001/003593 2000-08-11 2001-08-08 A hose and pipe coupling arrangement WO2002014729A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001276561A AU2001276561A1 (en) 2000-08-11 2001-08-08 A hose and pipe coupling arrangement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0019882A GB0019882D0 (en) 2000-08-11 2000-08-11 A hose and pipe coupling arrangement
GB0019882.0 2000-08-11

Publications (2)

Publication Number Publication Date
WO2002014729A1 true WO2002014729A1 (en) 2002-02-21
WO2002014729A9 WO2002014729A9 (en) 2005-09-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/003593 WO2002014729A1 (en) 2000-08-11 2001-08-08 A hose and pipe coupling arrangement

Country Status (3)

Country Link
AU (1) AU2001276561A1 (en)
GB (1) GB0019882D0 (en)
WO (1) WO2002014729A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005061939A1 (en) * 2003-12-17 2005-07-07 Volvo Lastvagnar Ab Hose coupling for connection to a rigid tube connection, and method for making such a connecting
WO2007133094A1 (en) 2006-05-12 2007-11-22 Filtercorp International Limited Cuffed connection system for ducts and tubular members
DE102014102038A1 (en) * 2014-02-18 2015-08-20 Benteler Automobiltechnik Gmbh Exhaust system component and method for connecting a first pipe component and a second pipe component of an exhaust system component

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817562A (en) * 1972-07-14 1974-06-18 Numatics Inc Connector for plastic tube
US4578855A (en) * 1982-07-21 1986-04-01 Eagle-Picher Industries, Inc. Article and method for connecting a remote air cleaner to a carburetor or an engine fuel metering device or system
US5626580A (en) * 1994-07-15 1997-05-06 Brosnahan; Robert Multi-section intramedullary nail
DE19642580A1 (en) * 1996-10-15 1998-06-04 Muhr & Bender Connector-hose connection
US6053675A (en) * 1998-06-26 2000-04-25 Black & Decker Inc. Quick-acting tool bit holder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817562A (en) * 1972-07-14 1974-06-18 Numatics Inc Connector for plastic tube
US4578855A (en) * 1982-07-21 1986-04-01 Eagle-Picher Industries, Inc. Article and method for connecting a remote air cleaner to a carburetor or an engine fuel metering device or system
US5626580A (en) * 1994-07-15 1997-05-06 Brosnahan; Robert Multi-section intramedullary nail
DE19642580A1 (en) * 1996-10-15 1998-06-04 Muhr & Bender Connector-hose connection
US6053675A (en) * 1998-06-26 2000-04-25 Black & Decker Inc. Quick-acting tool bit holder

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005061939A1 (en) * 2003-12-17 2005-07-07 Volvo Lastvagnar Ab Hose coupling for connection to a rigid tube connection, and method for making such a connecting
US7452009B2 (en) 2003-12-17 2008-11-18 Volvo Lastvagnan Ab Hose coupling for connection to a rigid tube connection, and method for making such a connection
WO2007133094A1 (en) 2006-05-12 2007-11-22 Filtercorp International Limited Cuffed connection system for ducts and tubular members
EP2021674A1 (en) * 2006-05-12 2009-02-11 Filtercorp International Limited Cuffed connection system for ducts and tubular members
JP2009537002A (en) * 2006-05-12 2009-10-22 フィルターコープ インターナショナル リミティド Cuffed connection system for ducts and tubular members
EP2021674A4 (en) * 2006-05-12 2011-10-19 Bfm Technology Ltd Cuffed connection system for ducts and tubular members
JP2013224744A (en) * 2006-05-12 2013-10-31 Bfm Technology Ltd Cuffed connection system for duct and tubular member
US8590943B2 (en) 2006-05-12 2013-11-26 BFM Technology Limited Cuffed connection system
EP2811213A1 (en) * 2006-05-12 2014-12-10 BFM Technology Limited Cuffed connection system
DE102014102038A1 (en) * 2014-02-18 2015-08-20 Benteler Automobiltechnik Gmbh Exhaust system component and method for connecting a first pipe component and a second pipe component of an exhaust system component
DE102014102038B4 (en) * 2014-02-18 2016-11-24 Benteler Automobiltechnik Gmbh Exhaust system component and method for connecting a first pipe component and a second pipe component of an exhaust system component

Also Published As

Publication number Publication date
GB0019882D0 (en) 2000-09-27
AU2001276561A1 (en) 2002-02-25
WO2002014729A9 (en) 2005-09-09

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