GB1576038A - Coupling branch pipes to main pipes - Google Patents

Coupling branch pipes to main pipes Download PDF

Info

Publication number
GB1576038A
GB1576038A GB2139477A GB2139477A GB1576038A GB 1576038 A GB1576038 A GB 1576038A GB 2139477 A GB2139477 A GB 2139477A GB 2139477 A GB2139477 A GB 2139477A GB 1576038 A GB1576038 A GB 1576038A
Authority
GB
United Kingdom
Prior art keywords
sleeve
coupling
collar
opening
tubular member
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.)
Expired
Application number
GB2139477A
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.)
Wavin BV
Original Assignee
Wavin BV
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 Wavin BV filed Critical Wavin BV
Publication of GB1576038A publication Critical patent/GB1576038A/en
Expired 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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/14—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe by screwing an intermediate part against the inside or outside of the wall
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/26—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics for branching pipes; for joining pipes to walls; Adaptors therefor
    • F16L47/28—Joining pipes to walls or to other pipes, the axis of the joined pipe being perpendicular to the wall or to the axis of the other pipe

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Description

(54) IMPROVEMENTS IN OR RELATING TO COUPLING BRANCH PIPES TO MAIN PIPES (71) We, WAVIN B.V., a Dutch Corporate body, of Handellaan 251, Zwolle, Holland, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to coupling a branch pipe to a main pipe.
The invention provides a coupling for coupling a branch pipe to a main pipe, said coupling comprising a tubular member, one end portion of which is provided with an external thread and is adapted to receive a branch pipe, and the other end portion of which has a radially outwardly extending collar and is adapted to be inserted through an opening made therefor in the side of a main pipe; a packing sleeve of an elastically deformable material positionable between the rim of the opening and the tubular member, one end portion of the sleeve being engageable with said collar and the other end portion of the sleeve having a circumferential lip engageable with the exterior of the main pipe adjacent the rim of the opening; a ring member adapted to engage the sleeve adjacent the rim of the opening; and a nut engageable with said external thread and adapted to abut the ring member such that, in use, tightening of the nut causes the collar to move towards the rim of the opening and thus the material of the sleeve to be deformed to provide a seal between the rim of the opening and the tubular member.
The invention also includes a branch pipe and a main pipe coupled together with a coupling as defined in the preceding paragraph.
In order that the invention may be well understood, an embodiment thereof, which is given by way of example only, will now be described, reference being had to the accompanying drawing which is an axial, part cross-sectional view of a coupling shown coupling a branch pipe to a main pipe.
In the drawing, there is shown part of a main pipe 1. The main pipe 1 is provided with an opening 2. The diameter of the pipe 1 is considerably larger than that of the opening 2.
A branch pipe 19 is coupled to the main pipe 1 by means of a coupling, which includes a tubular member 3 which has an end portion 3a formed as a socket and provided with a sealing member 20 forming a seal between the socket and the branch pipe 19. The other end portion of the tubular member 3 has a radially outwardly extending collar 5 and is inserted through the opening 2 which is sized so as to allow the collar 5 to pass therethrough.
A packing sleeve 6 of an elastically deformable material is positioned between the rim 17 of the opening 2 and the tubular member 3.
One end portion of the sleeve 6 engages the collar 5 and the other end portion of the sleeve has a circumferential lip 7 which is configured so as to engage the exterior of the pipe 1 adjacent the rim 17.
A ring member 21 is provided with radially outer and inner walls 12 and 13 which are provided with oppositely facing frusto-conical end faces which respectively engage the exterior of the pipe 1 adjacent the rim 17 of the opening and the sleeve 6. Radial walls 11 interconnect the annular walls 12 and 13. The lower edges of the walls 11 (as viewed in the drawing) are shaped to match the curvature of the pipe 1 and are provided with recesses 23 accommodating the lip 7 of the sleeve 6.
A nut 15 engages an external screw thread 16 on the portion 3a of the tubular member and abuts the ring member 21, a projection 14 of the ring member engaging the nut 15 in a recess 22 thereof. A radial face of the ring member engages a shoulder 24 on the tubular member.
When the nut 15 is tightened, the collar 5 of the tubular member 3 is caused to move towards the rim 17 of the opening 2. Since the ring member 21 remains in engagement with the pipe 1 and the sleeve 6, the material of the sleeve 6 between the end face 9 of wall 13 of the ring member and the collar 5 is deformed to provide a seal between the rim 17 and the tubular member 3.
It will be noted that the frusto-conical end face 9 of wall 13 of the ring surface engages a corresponding face 8 on a neck portion 10 of the sleeve 6 between the lip 7 and the remainder of the sleeve. Accordingly, the end face 9 serves to retain the lip of the sleeve in position as well as acting with the collar to deform the material of the seal between the collar and the end face as described above.
In order to accommodate frequently occurring small variations in the wall thickness of the main pipe I and to prevent the sleeve being pushed away from the tubular member between the interior of the pipe 1 and the collar 5 when the nut 15 is tightened, the surface 4 of the collar 5 which engages the end portion of the sleeve is curved and connects smoothly with the external surface of the tubular member 3 adjacent the collar, and the sleeve 6 is provided with a corresponding curved surface. The provision of these curved surfaces enables the sleeve to slide over the surface 4 during tightening of the nut rather than become separated from the tubular member.
It will be appreciated that the provision of the circumferential lip 7, greatly assists fitting of the sleeve within the opening and retention of the sleeve in position during tightening of the nut 15.
WHAT WE CLAIM IS: 1. A coupling for coupling a branch pipe to a main pipe, said coupling comprising a tubular member, one end portion of which is provided with an external thread and is adapted to receive a branch pipe, and the other end portion of which has a radially outwardly extending collar and is adapted to be inserted through an opening made therefor in the side of a main pipe; a packing sleeve of an elastically deformable material positionable between the rim of the opening and the tubular member, one end portion of the sleeve being engageable with said collar and the other end portion of the sleeve having a circumferential lip engageable with the exterior of the main pipe adjacent the rim of the opening; a ring member adapted to engage the sleeve adjacent the rim of the opening; and a nut engageable with said external thread and adapted to abut the ring member such that, in use, tightening of the nut causes the collar to move towards the rim of the opening and thus the material of the sleeve to be deformed to provide a seal between the rim of the opening and the tubular member.
2. A coupling as claimed in claim 1, wherein the lip of the sleeve is connected to the remainder thereof by a neck portion.
3. A coupling as claimed in claim 1 or 2, wherein said ring member has a substantially frusto-conical face adapted to engage the exterior of the main pipe adjacent the rim of the opening and an oppositely facing substantially frusto-conical face adapted to engage a corresponding face on the sleeve.
4. A coupling as claimed in claim 1,2 or 3, wherein said ring member comprises radially inner and outer annular walls interconnected by radial walls, the radial walls being recessed for accommodating the lip of the sleeve.
5. A coupling as claimed in any one of claims 1 to 4, wherein the surface of the collar which is engageable with said one end portion of the sleeve is curved and connects smoothly with the external surface of the tubular member adjacent the collar.
6. A coupling as claimed in claim 5, wherein said one end portion of the sleeve is provided with a corresponding curved surface.
7. A branch pipe and a main pipe coupled together with a coupling as claimed in any one of the preceding claims.
8. A coupling for coupling a branch pipe to a main pipe, substantially as herein described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    13 of the ring member and the collar 5 is deformed to provide a seal between the rim 17 and the tubular member 3.
    It will be noted that the frusto-conical end face 9 of wall 13 of the ring surface engages a corresponding face 8 on a neck portion 10 of the sleeve 6 between the lip 7 and the remainder of the sleeve. Accordingly, the end face 9 serves to retain the lip of the sleeve in position as well as acting with the collar to deform the material of the seal between the collar and the end face as described above.
    In order to accommodate frequently occurring small variations in the wall thickness of the main pipe I and to prevent the sleeve being pushed away from the tubular member between the interior of the pipe 1 and the collar 5 when the nut 15 is tightened, the surface 4 of the collar 5 which engages the end portion of the sleeve is curved and connects smoothly with the external surface of the tubular member 3 adjacent the collar, and the sleeve 6 is provided with a corresponding curved surface. The provision of these curved surfaces enables the sleeve to slide over the surface 4 during tightening of the nut rather than become separated from the tubular member.
    It will be appreciated that the provision of the circumferential lip 7, greatly assists fitting of the sleeve within the opening and retention of the sleeve in position during tightening of the nut 15.
    WHAT WE CLAIM IS: 1. A coupling for coupling a branch pipe to a main pipe, said coupling comprising a tubular member, one end portion of which is provided with an external thread and is adapted to receive a branch pipe, and the other end portion of which has a radially outwardly extending collar and is adapted to be inserted through an opening made therefor in the side of a main pipe; a packing sleeve of an elastically deformable material positionable between the rim of the opening and the tubular member, one end portion of the sleeve being engageable with said collar and the other end portion of the sleeve having a circumferential lip engageable with the exterior of the main pipe adjacent the rim of the opening; a ring member adapted to engage the sleeve adjacent the rim of the opening; and a nut engageable with said external thread and adapted to abut the ring member such that, in use, tightening of the nut causes the collar to move towards the rim of the opening and thus the material of the sleeve to be deformed to provide a seal between the rim of the opening and the tubular member.
  2. 2. A coupling as claimed in claim 1, wherein the lip of the sleeve is connected to the remainder thereof by a neck portion.
  3. 3. A coupling as claimed in claim 1 or 2, wherein said ring member has a substantially frusto-conical face adapted to engage the exterior of the main pipe adjacent the rim of the opening and an oppositely facing substantially frusto-conical face adapted to engage a corresponding face on the sleeve.
  4. 4. A coupling as claimed in claim 1,2 or 3, wherein said ring member comprises radially inner and outer annular walls interconnected by radial walls, the radial walls being recessed for accommodating the lip of the sleeve.
  5. 5. A coupling as claimed in any one of claims 1 to 4, wherein the surface of the collar which is engageable with said one end portion of the sleeve is curved and connects smoothly with the external surface of the tubular member adjacent the collar.
  6. 6. A coupling as claimed in claim 5, wherein said one end portion of the sleeve is provided with a corresponding curved surface.
  7. 7. A branch pipe and a main pipe coupled together with a coupling as claimed in any one of the preceding claims.
  8. 8. A coupling for coupling a branch pipe to a main pipe, substantially as herein described with reference to the accompanying drawing.
GB2139477A 1976-05-20 1977-05-20 Coupling branch pipes to main pipes Expired GB1576038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7605427A NL7605427A (en) 1976-05-20 1976-05-20 CONNECTION SLEEVE.

Publications (1)

Publication Number Publication Date
GB1576038A true GB1576038A (en) 1980-10-01

Family

ID=19826236

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2139477A Expired GB1576038A (en) 1976-05-20 1977-05-20 Coupling branch pipes to main pipes

Country Status (2)

Country Link
GB (1) GB1576038A (en)
NL (1) NL7605427A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557255A1 (en) * 1983-12-23 1985-06-28 Polva Nederland Bv Branch connection for mains pipework
GB2245943A (en) * 1990-06-20 1992-01-15 Wask Rmf Ltd Branch pipe fitting
GB2323904A (en) * 1997-04-02 1998-10-07 Flex Seal Couplings Ltd Lateral pipe adaptor
WO1999031428A1 (en) * 1997-12-17 1999-06-24 Kunststoffröhren Sendenhorst Gmbh Threaded branching for thin-walled channel pipes
US6406067B1 (en) 2001-02-08 2002-06-18 Flex-Seal Couplings Limited Lateral pipe adaptor
DE19816855C2 (en) * 1997-05-14 2002-07-18 Steinzeug Gmbh Connector for connecting a branch pipe to a laid sewer pipe
EP1619437A1 (en) * 2004-07-22 2006-01-25 Wavin B.V. Tapping connection
WO2006064191A3 (en) * 2004-12-16 2006-11-30 Flex Seal Couplings Ltd Lateral pipe adaptor
DE19927591B4 (en) * 1998-12-12 2008-02-28 Funke Kunststoffe Gmbh Device for sealingly connecting a sewer pipe to a connecting pipe
CN101514775B (en) * 2008-02-21 2012-05-30 张欢庆 Connecting mechanism for plastic water pipe joint
DE202012103503U1 (en) * 2012-09-14 2013-12-17 Rehau Ag + Co Connection system for connecting a pipe
CN106195505A (en) * 2016-08-31 2016-12-07 中工武大设计研究有限公司 A kind of bypass for drip irrigation appliance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9301914A (en) * 1993-11-05 1995-06-01 Nyloplast Europ Bv Method and device for fluidly and / or gas-tightly connecting at least two plastic elements.

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446360A1 (en) * 1983-12-23 1985-07-11 Polva-Nederland B.V., Enkhuizen Method for producing a coupling element for ensuring the connection between a main line and a branch line
FR2557255A1 (en) * 1983-12-23 1985-06-28 Polva Nederland Bv Branch connection for mains pipework
GB2245943A (en) * 1990-06-20 1992-01-15 Wask Rmf Ltd Branch pipe fitting
GB2323904A (en) * 1997-04-02 1998-10-07 Flex Seal Couplings Ltd Lateral pipe adaptor
GB2323904B (en) * 1997-04-02 2001-04-18 Flex Seal Couplings Ltd Lateral pipe adaptor
DE19816855C2 (en) * 1997-05-14 2002-07-18 Steinzeug Gmbh Connector for connecting a branch pipe to a laid sewer pipe
WO1999031428A1 (en) * 1997-12-17 1999-06-24 Kunststoffröhren Sendenhorst Gmbh Threaded branching for thin-walled channel pipes
DE19927591B4 (en) * 1998-12-12 2008-02-28 Funke Kunststoffe Gmbh Device for sealingly connecting a sewer pipe to a connecting pipe
US6406067B1 (en) 2001-02-08 2002-06-18 Flex-Seal Couplings Limited Lateral pipe adaptor
FR2873426A1 (en) * 2004-07-22 2006-01-27 Wavin Bv Soc De Droit Neerland CONNECTING FITTING
EP1619437A1 (en) * 2004-07-22 2006-01-25 Wavin B.V. Tapping connection
WO2006064191A3 (en) * 2004-12-16 2006-11-30 Flex Seal Couplings Ltd Lateral pipe adaptor
CN101514775B (en) * 2008-02-21 2012-05-30 张欢庆 Connecting mechanism for plastic water pipe joint
DE202012103503U1 (en) * 2012-09-14 2013-12-17 Rehau Ag + Co Connection system for connecting a pipe
CN106195505A (en) * 2016-08-31 2016-12-07 中工武大设计研究有限公司 A kind of bypass for drip irrigation appliance

Also Published As

Publication number Publication date
NL7605427A (en) 1977-11-22

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PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee