US5349989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid transportation multiconduit umbilical
Assignee: TechnipFMC Umbilicals Ltd
•
Filing: 1992-12-29
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Granted: 1994-09-27
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Expires: 2012-12-29
Abstract
Abstract For the transportation of a fluid such as a methanol or glycol there is provided a multi-conduit umbilical (20) having a conduit which comprises a hose (10,21,22) having a lining layer (11) of polyethylene, for example cross-linked polyethylene, arranged to restrain permeation of fluid from the bore of the hose (10,21,22).
Inventors
- 👤 Lucien Legallais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:53
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/12; F16L11/08; F16L11/081; F16L11/082; F16L11/22; F16L2011/047
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
A multi-conduit umbilical for the transportation of methanol or glycol over a distance of at least 3 kilometers and comprising a plurality of conduits at least one of which is comprised of a flexible hose comprising a hose reinforcement structure which extends along the length of the hose and a liner layer of cross-linked polyethylene which extends along at least a substantial part of the length of the hose at least at a position radially inwards of the hose reinforcement structure, the plurality of conduits forming the umbilical being maintained in a bundled configuration by a surrounding umbilical reinforcement structure.
Claim 2
Dependent Claim
100 words
A multi-conduit umbilical for the transportation of methanol or glycol over a distance of at least 3 kilometers and comprising a plurality of conduits at least one of which is comprised of a flexible hose comprising a hose reinforcement structure which extends along the length of the hose and a liner layer of cross-linked polyethylene which extends along at least a substantial part of the length of the hose at least at a position radially inwards of the hose reinforcement structure, the plurality of conduits forming the umbilical being maintained in a bundled configuration by a surrounding umbilical reinforcement structure.
Claim 3
Dependent Claim
19 words
A multi-conduit umbilical according to claim 1 wherein the hose reinforcement structure is embedded in the hose liner layer.
Claim 4
Dependent Claim
21 words
A multi-conduit umbilical according to claim 1 wherein the hose liner layer and hose reinforcement structure are surrounded by a sheath.
Claim 5
Dependent Claim
28 words
A multi-conduit unbiblical according to claim 3 wherein said sheath is of a material other than polyethylene and is more permeable to glycol and methanol than said liner.
Claim 6
Dependent Claim
29 words
A multi-conduit umbilical according to claim 3 wherein said sheath has a permeation rate which is at least 5 times that of the hose liner layer to methanol liquid.
Claim 7
Dependent Claim
23 words
A multi-conduit umbilical according to claim 5 wherein said sheath has a permeability rate at least 10 times that of the hose liner.
Claim 8
Dependent Claim
23 words
A multi-conduit umbilical according claim 1 wherein said hose liner layer has a thickness which lies in the range 0.8 to 4.0 mm.
Claim 9
Dependent Claim
24 words
A multi-conduit umbilical according to claim 7 wherein the thickness of the hose liner layer lies in the range 1 mm to 2.0 mm.
Claim 10
Dependent Claim
37 words
A multi-conduit umbilical according to claim 1 wherein the assembly of conduits is surrounded by an umbilical reinforcement structure having a permeability to methanol or glycol less than that of the polyethylene liner of said hose conduit.
Claim 11
Dependent Claim
26 words
A multi-conduit umbilical according to claim 1 wherein the permeability of the umbilical reinforcement structure is at least 5 times that of said hose liner layer.
Claim 12
Dependent Claim
45 words
A method for the transportation of methanol or glycol between two stations wherein an umbilical according to claim 1 is arranged to extend between said stations and is secured relative to said stations by means of end fittings associated with respective ends of the umbilical.
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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) | 1997-09-26 | 1998-03-28 | 1998-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-26 | 2002-03-28 | 2002-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-26 | 2006-03-28 | 2006-09-27 | $7700.00 | Window Closed / Lapsed |