US4239336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical communication cable
Assignee: Alcatel Submarine Systems BV
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Filing: 1978-12-01
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Granted: 1980-12-16
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Expires: 1998-12-01
Abstract
Abstract An optical fiber cable, particularly for submarine cable use, has its fibers enclosed within a tubular electrical conductor which is itself overlayed by a dielectric layer. This layer is itself overlayed by a strength member formed of closely adjacent wires.
Inventors
- 👤 Colin S. Parfree
- 👤 Peter Worthington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:51
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4427; G02B6/4416; G02B6/4429; G02B6/443
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
59 words
An optical fiber cable, comprising: at least one optical fiber; a tubular electrical conductor disposed about said optical fiber and having a wall that is thick compared with the diameter of said optical fiber; an external sheath including a layer of dielectric material disposed about said tubular conductor; and a tubular strength member overlying said layer of dielectric material.
Claim 2
Dependent Claim
59 words
An optical fiber cable, comprising: at least one optical fiber; a tubular electrical conductor disposed about said optical fiber and having a wall that is thick compared with the diameter of said optical fiber; an external sheath including a layer of dielectric material disposed about said tubular conductor; and a tubular strength member overlying said layer of dielectric material.
Claim 3
Dependent Claim
27 words
An optical fiber cable as described in claim 1, additionally comprising a layer of highly conductive material disposed about the outer surface of said tubular electrical conductor.
Claim 4
Dependent Claim
38 words
An optical fiber cable as described in claim 2, wherein the tubular electrical conductor is a longitudinally split tube of aluminum and the layer of highly conductive material comprises a layer of copper tape overlying said aluminum tube.
Claim 5
Dependent Claim
70 words
An optical fiber cable, comprising: a plurality of optical fibers, each having its own sheath; a hollow cylindrical electrical conductor disposed about said optical fibers, said conductor having a wall which is thick compared with the diameter of the plurality of optical fibers including their sheaths; a dielectric layer overlying said tubular conductor; a stranded cylindrical strength member overlying said dielectric layer; and an outer sheath overlying said strength member.
Claim 6
Dependent Claim
70 words
An optical fiber cable, comprising: a plurality of optical fibers, each having its own sheath; a hollow cylindrical electrical conductor disposed about said optical fibers, said conductor having a wall which is thick compared with the diameter of the plurality of optical fibers including their sheaths; a dielectric layer overlying said tubular conductor; a stranded cylindrical strength member overlying said dielectric layer; and an outer sheath overlying said strength member.
Claim 7
Dependent Claim
24 words
An optical fiber cable as described in claim 4, additionally comprising a layer of copper tape disposed over the surface of said electrical conductor.
Claim 8
Dependent Claim
98 words
An optical fiber cable, comprising: a plurality of optical fibers, each having its own cladding layer; a tubular electrical conductor formed by a longitudinally split aluminum tube disposed about said optical fibers; a cylindrical layer of copper tape disposed about the tubular electrical conductor for hermetically sealing said conductor; a layer of polyethylene overlying said tubular conductor; a cylindrical strength member formed by closely adjacent steel wires overlying said polyethylene layer; and a sheath overlying said strength member, the wall of said aluminum tube being thick compared with the total diameter of the optical fibers including the cladding.
Claim 9
Dependent Claim
98 words
An optical fiber cable, comprising: a plurality of optical fibers, each having its own cladding layer; a tubular electrical conductor formed by a longitudinally split aluminum tube disposed about said optical fibers; a cylindrical layer of copper tape disposed about the tubular electrical conductor for hermetically sealing said conductor; a layer of polyethylene overlying said tubular conductor; a cylindrical strength member formed by closely adjacent steel wires overlying said polyethylene layer; and a sheath overlying said strength member, the wall of said aluminum tube being thick compared with the total diameter of the optical fibers including the cladding.
Claim 10
Dependent Claim
68 words
An optical fiber cable, comprising: a plurality of optical fibers; a tubular electrical conductor formed by a longitudinally split tube of highly conductive metal disposed about said optical fibers; a cylindrical strength member formed by at least one layer of steel wire overlying said tubular conductor; a layer of tape of highly conductive material overlying the cylindrical strength member; and a dielectric layer enclosing said layer of tape.
Claim 11
Dependent Claim
68 words
An optical fiber cable, comprising: a plurality of optical fibers; a tubular electrical conductor formed by a longitudinally split tube of highly conductive metal disposed about said optical fibers; a cylindrical strength member formed by at least one layer of steel wire overlying said tubular conductor; a layer of tape of highly conductive material overlying the cylindrical strength member; and a dielectric layer enclosing said layer of tape.
References Cited (Backward Citations)
GB1172272A
Cited
GB1438074A
Cited
FR2265108A1
Cited
DE2507649A1
Cited
US4160872A
Cited
US4156104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |