WO1981003535A1 - A sealing ring of an elastic material - Google Patents

A sealing ring of an elastic material Download PDF

Info

Publication number
WO1981003535A1
WO1981003535A1 PCT/DK1981/000056 DK8100056W WO8103535A1 WO 1981003535 A1 WO1981003535 A1 WO 1981003535A1 DK 8100056 W DK8100056 W DK 8100056W WO 8103535 A1 WO8103535 A1 WO 8103535A1
Authority
WO
WIPO (PCT)
Prior art keywords
main member
spigot end
sealing
sealing ring
outer portion
Prior art date
Application number
PCT/DK1981/000056
Other languages
French (fr)
Inventor
J Christensen
Original Assignee
Schionning & Arve As
J Christensen
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 Schionning & Arve As, J Christensen filed Critical Schionning & Arve As
Publication of WO1981003535A1 publication Critical patent/WO1981003535A1/en
Priority to FI814010A priority Critical patent/FI814010L/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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/035—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed around the spigot end before connection
    • 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/025—Rolling sealing rings

Definitions

  • the invention relates to a sealing ring of an elastic material, consisting of a solid main member to be applied under expansion thereof to the spigot end of a pipe and a solid sealing member substantially of circular cross-section connected to said main member through a thin connecting flap, said sealing member, when the main member is applied, being disposed completely or partly outside the outer portion of the main member facing in the direction of the spigot end, said main member having a ring-shaped depression to receive, at least partly, the sealing member after insertion. of the spigot end into a pipe socket on an adjoining pipe.
  • the known sealing rings of the present type also involve a risk of the main member and/or the sealing member proper being twisted during the application or during the assembling of the pipe ends.
  • the object of the invention present is to avoid these drawbacks while providing favourable load conditions with due regard to the elastic materials used, the loading of which must not exceed given values, so that there is no risk of the material being permanently deformed, which would reduce the efficiency of the seal.
  • This is achieved according to the invention in that the connecting flap in cross-section is of such length that after application of the sealing ring to the spigot end said connecting flap extends from the sealing member over the upwardly domed outer portion of the main member and to a junction between the connecting flap and the main member positioned adjacent said depression.
  • the advantage of such an embodiment is that after insertion of the spigot end into a pipe socket of an adjoining pipe the relatively long flap will be disposed on the exterior of the upwardly domed outer portion of the main member, as, during assembling of the two pipes, the sealing member of circular cross-section will roll right up to the said depression and be placed in position there while being flattened to some extent, to thereby provide the desired sealing pressure and secure locking.
  • the outer portion of the main member will be closely spaced from the inner side of the pipe socket as long as the two pipes are fitted quite correctly with respect to each other, but in case of lateral loads or obliqueness in the mutual positions of the pipes, this outer portion will engage the inner side of the pipe socket and thus serve to limit the undesirable lateral mutual movements of the pipes.
  • said depression of the main member has a bottom which is substantially rectilinear in cross-section and extends in parallel with the engagement face of the main member against the spigot end.
  • an engagement member is provided at the edge of the said outer portion of the main member, said engagement member being displaced radially inwardly to engage a shoulder on the spigot end and adapted to restrict the radially inward movement of the sealing member during application of the sealing ring to the spigot end.
  • the edge portion opposite said outer portion of the main member has substantially the same radial thickness outside the said depression as said outer portion; the advantage of this is that both the said edge portion and the domed outer portion contribute to restricting lateral displacements, and at the same time the said edge portion confines the depression and thus contributes to the efficient locking of the sealing member.
  • fig. 1 shows a cross-section of a sealing ring according to the invention in an unaffected state
  • fig. 2 shows the same sealing ring applied to the spigot end of a pipe
  • fig. 3 shows the sealing ring after the spigot end has been completely inserted into a pipe socket.
  • Fig. 1 shows the cross-section of a sealing ring consisting of a main member 1 which, at the edge which is to face an adjoining pipe, has an upwardly domed outer portion 2 with an engagement member 3 displaced radially inwardly.
  • the main member 1 has a depression 4 serving to receive a sealing member 5 which is connected to the domed outer portion 2 close to the depression 4 through a flap 6 which is long in cross-section.
  • the sealing member 5 proper has a substantially circular cross-section and may, as shown, be provided with small serrations or another fine profiling to provide efficient friction against a socket member to be slid over the sealing ring during the assembling of two pipes.
  • the main member 1 has an edge portion 7 which is disposed opposite said outer portion 2 and is of substantially the same height as the domed outer portion 2.
  • the main member 1 of the sealing ring has a slightly smaller diameter than the spigot end to which it is to be applied, and in fig. 2 the sealing ring is shown mounted on a spigot end 8. In this position, owing to the expansion of the main member 1, the sealing member 5 will assume the shown position where it engages the engagement member 3, where it is in a correct position for insertion into a pipe socket.
  • the sealing ring is shown after the spigot end 8 has been inserted into a pipe socket 9, the sealing member 5 having been rolled into the depression 4 whose bottom is substantially parallel with the inner surface of the sealing ring, so that the sealing member will be evenly loaded.
  • the engagement member 3 can contribute to preventing axial displacement of the sealing ring during insertion into the pipe socket 9.
  • the domed outer portion 2 as well as the edge portion 7 is of such height that their outer surfaces are quite closely spaced from the inner surface of the pipe socket 9, and one or both of them can then engage the pipe socket in case of a relative, lateral displacement of the two pipe members.
  • the flap 6 engages the inner side of the pipe socket 9 and forms together with the sealing member 5 the seal proper, and with the standard dimensions the lateral displacement which is possible in relation to the outer portion 2 and the edge portion 7 is determined so that the material in the sealing member 5 and in the flap 6 cannot be overloaded.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Sleeves (AREA)
  • Gasket Seals (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

A sealing ring of an elastic material is adapted to be applied under expansion thereof to the spigot end of a pipe and consists of a solid main member (1), which is connected to a sealing member (5) through a thin flap (6). The main member (1) has an anchoring member (4) to receive the sealing member (5). To obtain good sealing and convenient insertion of the spigot end (8) provided with the sealing ring into a pipe socket (9) without any risk of the elastic material being overloaded, the sealing member (5) has a circular cross-section, and its connecting flap (6) to the main member (1) is so long that after mounting of the sealing ring on the spigot end (8) it extends over the outer portion (2) of the main member (1) which is disposed at the extremity of the spigot end (8).

Description

A sealing ring of an elastic material
The invention relates to a sealing ring of an elastic material, consisting of a solid main member to be applied under expansion thereof to the spigot end of a pipe and a solid sealing member substantially of circular cross-section connected to said main member through a thin connecting flap, said sealing member, when the main member is applied, being disposed completely or partly outside the outer portion of the main member facing in the direction of the spigot end, said main member having a ring-shaped depression to receive, at least partly, the sealing member after insertion. of the spigot end into a pipe socket on an adjoining pipe.
With the ever increasing demands on the reliability of seals in the joining of pipes it has been found that such sealing rings cannot always fully meet the requirements, which chiefly concern, long-term durability and certainty of efficient sealing even under adverse conditions, such as oblique loads on the pipes.
The known sealing rings of the present type also involve a risk of the main member and/or the sealing member proper being twisted during the application or during the assembling of the pipe ends.
The object of the invention present is to avoid these drawbacks while providing favourable load conditions with due regard to the elastic materials used, the loading of which must not exceed given values, so that there is no risk of the material being permanently deformed, which would reduce the efficiency of the seal. This is achieved according to the invention in that the connecting flap in cross-section is of such length that after application of the sealing ring to the spigot end said connecting flap extends from the sealing member over the upwardly domed outer portion of the main member and to a junction between the connecting flap and the main member positioned adjacent said depression. The advantage of such an embodiment is that after insertion of the spigot end into a pipe socket of an adjoining pipe the relatively long flap will be disposed on the exterior of the upwardly domed outer portion of the main member, as, during assembling of the two pipes, the sealing member of circular cross-section will roll right up to the said depression and be placed in position there while being flattened to some extent, to thereby provide the desired sealing pressure and secure locking. At the same time, the outer portion of the main member will be closely spaced from the inner side of the pipe socket as long as the two pipes are fitted quite correctly with respect to each other, but in case of lateral loads or obliqueness in the mutual positions of the pipes, this outer portion will engage the inner side of the pipe socket and thus serve to limit the undesirable lateral mutual movements of the pipes.
No lubrication is needed in the use of such a sealing ring because the friction between the parts is turned into account.
To obtain a particularly efficient locking of the sealing member after the assembling of the pipes, it is expedient according to the invention that said depression of the main member has a bottom which is substantially rectilinear in cross-section and extends in parallel with the engagement face of the main member against the spigot end.
As it is important that the sealing ring is fitted quite accurately on the spigot end and is secured against displacement in an axial direction during the assembling of the pipes, it is advantageous according to the invention that an engagement member is provided at the edge of the said outer portion of the main member, said engagement member being displaced radially inwardly to engage a shoulder on the spigot end and adapted to restrict the radially inward movement of the sealing member during application of the sealing ring to the spigot end. This also makes it quite certain that the sealing member itself will be disposed at the correct point before the insertion into the pipe socket so that said rolling of the sealing member will take place exactly in the desired manner.
To additionally improve the safeguard against undesirable large mutual movements of the pipes, it is expedient according to the invention that the edge portion opposite said outer portion of the main member has substantially the same radial thickness outside the said depression as said outer portion; the advantage of this is that both the said edge portion and the domed outer portion contribute to restricting lateral displacements, and at the same time the said edge portion confines the depression and thus contributes to the efficient locking of the sealing member.
The invention will be described more fully below with reference to the drawing, in which
fig. 1 shows a cross-section of a sealing ring according to the invention in an unaffected state,
fig. 2 shows the same sealing ring applied to the spigot end of a pipe, and
fig. 3 shows the sealing ring after the spigot end has been completely inserted into a pipe socket. Fig. 1 shows the cross-section of a sealing ring consisting of a main member 1 which, at the edge which is to face an adjoining pipe, has an upwardly domed outer portion 2 with an engagement member 3 displaced radially inwardly. The main member 1 has a depression 4 serving to receive a sealing member 5 which is connected to the domed outer portion 2 close to the depression 4 through a flap 6 which is long in cross-section. The sealing member 5 proper has a substantially circular cross-section and may, as shown, be provided with small serrations or another fine profiling to provide efficient friction against a socket member to be slid over the sealing ring during the assembling of two pipes. The main member 1 has an edge portion 7 which is disposed opposite said outer portion 2 and is of substantially the same height as the domed outer portion 2.
The main member 1 of the sealing ring has a slightly smaller diameter than the spigot end to which it is to be applied, and in fig. 2 the sealing ring is shown mounted on a spigot end 8. In this position, owing to the expansion of the main member 1, the sealing member 5 will assume the shown position where it engages the engagement member 3, where it is in a correct position for insertion into a pipe socket.
In fig. 3 the sealing ring is shown after the spigot end 8 has been inserted into a pipe socket 9, the sealing member 5 having been rolled into the depression 4 whose bottom is substantially parallel with the inner surface of the sealing ring, so that the sealing member will be evenly loaded. It is readily apparent from the figure that when the spigot end is formed with a shoulder 8 the engagement member 3 can contribute to preventing axial displacement of the sealing ring during insertion into the pipe socket 9. It also appears from the figure that the domed outer portion 2 as well as the edge portion 7 is of such height that their outer surfaces are quite closely spaced from the inner surface of the pipe socket 9, and one or both of them can then engage the pipe socket in case of a relative, lateral displacement of the two pipe members. The flap 6 engages the inner side of the pipe socket 9 and forms together with the sealing member 5 the seal proper, and with the standard dimensions the lateral displacement which is possible in relation to the outer portion 2 and the edge portion 7 is determined so that the material in the sealing member 5 and in the flap 6 cannot be overloaded.

Claims

Patent_Claims:
1. A sealing ring of an elastic material, consisting of a solid main member to be applied under expansion thereof to the spigot end of a pipe and a solid sealing member substantially of circular cross-section connected to said main member through a thin connecting flap, said sealing member, when the main member is applied, being disposed completely or partly outside the outer portion of the main member facing in the direction of the spigot end, said main member having a ring-shaped depression to receive, at least partly, the sealing member after insertion of the spigot end into a pipe socket on an adjoining pipe, c h a r a c t e r i z e d in that the connecting flap in cross-section is of such length that after application of the sealing ring to the spigot end said connecting flap extends from the sealing member over the upwardly domed outer portion of the main member and to a junction between the connecting flap and the main member positioned adjacent said depression.
2. A sealing ring according to claim 1, c h a r a ct e r i z e d in that said depression of the main member has a bottom which is substantially rectilinear in cross-section and extends in parallel with the engagement face of the main member against the spigot end.
3. A sealing ring according to claim 1, c h a r a ct e ri z e d by the provision of an engagement member at the edge of the said, outer portion of the main member, said engagement member being displaced radially inwardly to engage a shoulder on the spigot end and adapted to restrict the radially inward movement of the sealing member during application of the sealing ring to the spigot end.
4. A sealing ring according to claim 1, c h a r a ct e r i z e d in that the edge portion opposite said outer portion of the main member has substantially the same radial thickness outside the said depression as said outer portion.
PCT/DK1981/000056 1980-05-28 1981-05-27 A sealing ring of an elastic material WO1981003535A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI814010A FI814010L (en) 1980-05-28 1981-12-14 TAETNINGSRING AV ELASTISKT MATERIAL

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK230180A DK230180A (en) 1980-05-28 1980-05-28 SEALING RING OF ELASTIC MATERIAL
DK2301/80 1980-05-28

Publications (1)

Publication Number Publication Date
WO1981003535A1 true WO1981003535A1 (en) 1981-12-10

Family

ID=8111451

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1981/000056 WO1981003535A1 (en) 1980-05-28 1981-05-27 A sealing ring of an elastic material

Country Status (5)

Country Link
EP (1) EP0052638A1 (en)
DK (1) DK230180A (en)
NO (1) NO814300L (en)
SE (1) SE8200429L (en)
WO (1) WO1981003535A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809994A (en) * 1986-10-16 1989-03-07 Press-Seal Gasket Corporation Pipe joint seal with bistable elastomeric sealing projection
US4916799A (en) * 1986-10-16 1990-04-17 Press-Seal Gasket Corporation Method of making a pipe joint seal with bistable elastomeric sealing projection
US5624123A (en) * 1994-05-11 1997-04-29 Tuf-Tite, Inc. Pipe seal assembly for poured concrete on-site waste disposal system components
US5653452A (en) * 1995-05-16 1997-08-05 Uponor B.V. Socket joint for plastic pipes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE314259B (en) * 1966-06-03 1969-09-01 Rheinstahl Huettenwerke Ag
DE1944832A1 (en) * 1969-09-04 1971-03-11 Muecher Hermann Elastic sealing ring for pipe connection points
DE2519540A1 (en) * 1975-05-02 1976-11-18 Clouth Gummiwerke Ag Elastic seal for pipe joint - has sleeve with thickened ridges constraining "O"-ring

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE314259B (en) * 1966-06-03 1969-09-01 Rheinstahl Huettenwerke Ag
DE1944832A1 (en) * 1969-09-04 1971-03-11 Muecher Hermann Elastic sealing ring for pipe connection points
DE2519540A1 (en) * 1975-05-02 1976-11-18 Clouth Gummiwerke Ag Elastic seal for pipe joint - has sleeve with thickened ridges constraining "O"-ring

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809994A (en) * 1986-10-16 1989-03-07 Press-Seal Gasket Corporation Pipe joint seal with bistable elastomeric sealing projection
US4916799A (en) * 1986-10-16 1990-04-17 Press-Seal Gasket Corporation Method of making a pipe joint seal with bistable elastomeric sealing projection
US5624123A (en) * 1994-05-11 1997-04-29 Tuf-Tite, Inc. Pipe seal assembly for poured concrete on-site waste disposal system components
US5653452A (en) * 1995-05-16 1997-08-05 Uponor B.V. Socket joint for plastic pipes

Also Published As

Publication number Publication date
DK230180A (en) 1981-11-29
NO814300L (en) 1981-12-16
SE8200429L (en) 1982-01-27
EP0052638A1 (en) 1982-06-02

Similar Documents

Publication Publication Date Title
EP0945661B1 (en) Device for connecting a pipe joint
US5121949A (en) Compression coupling
US5603530A (en) Grab rings
US4626001A (en) Fluid fitting with high temperature capabilities
US4664421A (en) Forgiving profile pipe gasket
US4629221A (en) Pipe connectors
US5188398A (en) Redundantly locked fluid coupling
US4191389A (en) Sealing washer
US4097074A (en) Pipe joint construction
US2761707A (en) Tube coupling with impressionable metallic seal
US3850461A (en) Threaded tube joint structure for a casing
US20080029971A1 (en) Seal ring and method
US4428604A (en) Restrained pipe joint and associated snap-ring
GB2119044A (en) Screw coupling joint
US4524505A (en) Method of assembling a pipe joint
GB2120342A (en) A high integrity flange connection
JP2597071Y2 (en) gasket
GB2172365A (en) Coded fluid coupling
US4371179A (en) T-Shaped sealing ring with elongated lip
US4040651A (en) Self-locking pipe coupling
US3186739A (en) Flexible coupling
US6032958A (en) Bi-directional pressure-energized metal seal
WO1981003535A1 (en) A sealing ring of an elastic material
US7243954B2 (en) Pipe joint with earthquake-proof function
US4268072A (en) Pipe coupling for interconnecting pipes experiencing length changes

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): DE FI GB NO SE US

AL Designated countries for regional patents

Designated state(s): AT CH DE FR GB LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 814010

Country of ref document: FI

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642