Patent US1216494A successfully refreshed from Google Patents.
US4310183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite pipe coupling
Assignee: Aerofit Products Inc
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Filing: 1979-11-28
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Granted: 1982-01-12
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Expires: 1999-11-28
Abstract
Abstract The invention is a composite pipe coupling having a corrosion resistant liner which seals pipes to be coupled by the utilization of heat recoverable metallic material and having a complementary external support structure which allows high tensile loading of the coupling.
Inventors
- 👤 Laszlo Szalvay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:24
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/14; F16L13/141; F16L13/004
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
140 words
A composite pipe coupling comprising: (a) a liner means having an opening therethrough capable of receiving the ends of the pipes to be connected; (b) driver means of heat-recoverable metallic material having an opening therethrough mounted concentrically around said liner means, said driver means constricting radially inwardly upon heat recovery to grip and radially contain said liner means into a sealing condition with pipes to be connected; and (c) external support means having an opening therethrough mounted concentrically around said driver means and contacting each end of said liner means at the periphery of the opening through said liner means to axially support and contain said liner means, said liner means acting as a compression member to transmit tensile loading created by the pipes to be connected through the radially and axially contained liner means to said external support means.
Claim 2
Dependent Claim
140 words
A composite pipe coupling comprising: (a) a liner means having an opening therethrough capable of receiving the ends of the pipes to be connected; (b) driver means of heat-recoverable metallic material having an opening therethrough mounted concentrically around said liner means, said driver means constricting radially inwardly upon heat recovery to grip and radially contain said liner means into a sealing condition with pipes to be connected; and (c) external support means having an opening therethrough mounted concentrically around said driver means and contacting each end of said liner means at the periphery of the opening through said liner means to axially support and contain said liner means, said liner means acting as a compression member to transmit tensile loading created by the pipes to be connected through the radially and axially contained liner means to said external support means.
Claim 3
Dependent Claim
24 words
A device as 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
43 words
A device as in claim 1 wherein said external support housing comprises a cylindrical canister having an axial opening through the ends of said cylinder wherein one end of said canister is detachable from the remainder of the canister for purpose of assembly.
Claim 5
Dependent Claim
28 words
A device as in claim 1 wherein the driver means has a varying degree of heat recovery whereby the gripping forces of said driver means are thereby variable.
Claim 6
Dependent Claim
43 words
A device as in claim 2 wherein said external support housing comprises a cylindrical canister having an axial opening through the ends of said cylinder wherein one end of said canister is detachable from the remainder of the canister for purpose of assembly.
Claim 7
Dependent Claim
28 words
A device as in claim 5 wherein the driver means has a varying degree of heat recovery whereby the gripping forces of said driver means are thereby variable.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |