EP0030119A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Device and method for coupling pipes
Assignee: Raychem Corp
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Filing: 1980-11-26
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Granted: —
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Expires: 2000-11-26
Abstract
Abstract A composite pipe coupling has a liner (16), which seals pipes (10,12) to be coupled by the utilization of heat recoverable metallic drivers (18 to 26), and a complementary external support structure (28) that allows high tensile loading of the coupling. A pair of complementary heat recoverable metallic tensile rings (118,130) may further supplement the tensile strength of the liner (16;132).
Inventors
- 👤 Laszlo Szalvay
- 👤 Harry Clifton Broyles
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 06:24
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/14; F16L13/141; F16L13/004
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
78 words
A composite pipe coupling comprising: liner means capable of receiving therein the ends of pipes to be connected; driver means of heat-recoverable metallic material mounted around said liner means, said driver means being arranged to constrict inwardly upon heat recovery to grip said liner means and to deform said liner means to effect sealing with the pipes to be connected; and support means mounted around said driver means and said liner means to support said liner means axially.
Claim 2
Dependent Claim
78 words
A composite pipe coupling comprising: liner means capable of receiving therein the ends of pipes to be connected; driver means of heat-recoverable metallic material mounted around said liner means, said driver means being arranged to constrict inwardly upon heat recovery to grip said liner means and to deform said liner means to effect sealing with the pipes to be connected; and support means mounted around said driver means and said liner means to support said liner means axially.
Claim 3
Dependent Claim
27 words
A composite pipe coupling as claimed in Claim 1, wherein said driver means comprises a plurality of ring-like segments distributed axially along and over said liner means.
Claim 4
Dependent Claim
36 words
A composite pipe coupling as claimed in Claim 1 or 2, wherein the driver means has a varying degree of heat recovery axially of the coupling, whereby the gripping forces of said driver means are variable.
Claim 5
Dependent Claim
25 words
A composite pipe coupling as claimed in any preceding claim, comprising heating means disposed within said support means for effecting recovery of the driver means.
Claim 6
Dependent Claim
46 words
A composite pipe coupling as claimed in any preceding claim, wherein said support means comprises a closed, generally cylindrical canister having an axial opening through the ends thereof, one end of said canister being detachable from the remainder of the canister for assembly of the coupling.
Claim 7
Dependent Claim
40 words
A composite pipe coupling as claimed in any preceding claim, wherein said support means is mounted concentrically around said driver means and acts longitudinally inwardly of, preferably in direct contact with, the coupling on each end of said liner means.
Claim 8
Dependent Claim
50 words
A composite pipe coupling as claimed in any of Claims 1 to 4, comprising two tensile rings of heat-recoverable metallic material, said tensile rings being axially mounted adjacent respective ends of said liner means and being arranged to constrict inwardly upon heat recovery to grip respective ones of said pipes.
Claim 9
Dependent Claim
34 words
A composite pipe coupling as claimed in Claim 7, wherein said support means is mounted around said liner means,, said driver means and said tensile rings to contain and support said tensile rings axially.
Claim 10
Dependent Claim
33 words
A composite pipe coupling as claimed in Claim 7 or 8, wherein said support means acts longitudinally of the coupling on, and preferably in direct contact with, respective ends of said tensile rings.
Claim 11
Dependent Claim
73 words
A composite pipe coupling as claimed in any of Claims 7 to 9, wherein said support means has a sealing lip at each end thereof, said lips respectively extending axially inwardly toward said tensile rings and having a portion thereof extending under the tensile rings, said tensile rings being arranged to constrict radially upon recovery to grip said sealing lips and pipes to seal said support means to the pipes to be connected.
Claim 12
Independent Claim
66 words
A method of coupling two pipes together, wherein liner means is positioned over the ends of the pipes and heat-recoverable metallic driver means is recovered inwardly to grip said liner means and to deform said liner means into sealing engagement with the pipes, and wherein a support arrangement is mounted around said driver means and said liner means to provide axial support for the liner means.
Claim 13
Independent Claim
66 words
A method of coupling two pipes together, wherein liner means is positioned over the ends of the pipes and heat-recoverable metallic driver means is recovered inwardly to grip said liner means and to deform said liner means into sealing engagement with the pipes, and wherein a support arrangement is mounted around said driver means and said liner means to provide axial support for the liner means.
Claim 14
Independent Claim
71 words
A method of coupling two pipes together, wherein liner means is positioned over the ends of the pipes and heat-recoverable metallic driver means is recovered radially inwadly to grip said liner means and to deform said liner means into sealing engagement with the pipes, and wherein a support arrangement, at least a portion of which is heat-recoverable, is positioned to enclose said liner means and driver means for strengthening the coupling.
Claim 15
Independent Claim
71 words
A method of coupling two pipes together, wherein liner means is positioned over the ends of the pipes and heat-recoverable metallic driver means is recovered radially inwadly to grip said liner means and to deform said liner means into sealing engagement with the pipes, and wherein a support arrangement, at least a portion of which is heat-recoverable, is positioned to enclose said liner means and driver means for strengthening the coupling.
Claim 16
Independent Claim
20 words
A method of coupling two pipes together employing a composite pipe coupling according to any of Claims 1 to 10.
References Cited (Backward Citations)
No citation records indexed.
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