Patent US4460419A successfully refreshed from Google Patents.
US4460419A
Expired / Lapsed
US
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Method of making optical fiber cables
Assignee: Alcatel Submarine Systems BV
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Filing: 1983-08-11
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Granted: 1984-07-17
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Expires: 2003-08-11
Abstract
Abstract An optical fiber submarine cable is made by extruding a metallic pressure tube by a friction extrusion technique, compressing the tube, applying tensile strength members, applying a conductive tape over the strength members and extruding plastic dielectric material over the tape. Armoring can subsequently be applied for shallow water application.
Inventors
- 👤 Colin S. Parfree
- 👤 Peter Worthington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:07
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4479; G02B6/4486; G02B6/4488; G02B6/4401; G02B6/4415; G02B6/4416; G02B6/4427; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
57 words
A method of making an optical fibre cable comprising: providing a C-section metallic conductor extruded by a friction extrusion technique and having edge sections, placing an optical fibre into said C-section conductor, sizing said conductor to close said conductor and reduce the external diameter to a predetermined value, and applying a tensile strength member around said conductor.
Claim 2
Independent Claim
57 words
A method of making an optical fibre cable comprising: providing a C-section metallic conductor extruded by a friction extrusion technique and having edge sections, placing an optical fibre into said C-section conductor, sizing said conductor to close said conductor and reduce the external diameter to a predetermined value, and applying a tensile strength member around said conductor.
Claim 3
Dependent Claim
28 words
The method according to claim 1 wherein sizing is accomplished by passing said conductor through a train of dies to bring together said edge sections of said conductor.
Claim 4
Dependent Claim
28 words
The method according to claim 1 wherein the tensile strength member is applied by stranding high tensile strength wires in at least a first layer around said conductor.
Claim 5
Dependent Claim
16 words
The method according to claim 1 further comprising extruding a dielectric layer over the strength member.
Claim 6
Dependent Claim
26 words
The method according to claim 1 wherein the external diameter of the closed C-section conductor is reduced by 5% to 10% of the initially closed diameter.
Claim 7
Dependent Claim
27 words
The method according to claim 3 wherein the predetermined value is determined so that said wires of said first layer contact each other and said C-section conductor.
Claim 8
Dependent Claim
24 words
The method according to claim 5 wherein said conductor is made of a metal selected from the group consisting of aluminum and aluminum alloy.
References Cited (Backward Citations)
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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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |