US4408828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical fibre submarine cable
Assignee: Individual
•
Filing: 1980-11-20
•
Granted: 1983-10-11
•
Expires: 2000-11-20
Abstract
Abstract The cable consists of a central core including helical grooves at its periphery and a composite sheath. Each groove receives at least one optical fibre. To obviate any distortion near the optical fibres as a result of cable laying and of high isostatic pressures in operation of the order of 8 daN/mm 2 , the center of the core is constituted by a strand of metal wires and by a metal grooved jacket therearound. The sheath comprises a metal inner jacket which closes the grooves but does not press on the fibres, an insulting jacket, a second metal jacket and an outer insulating jacket.
Inventors
- 👤 Georges E. Le Noane
- 👤 Bernard G. Nonclercq
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:18
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4407; G02B6/4415; G02B6/4427
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
86 words
An optical fibre cable comprising: a central member including a central strand of metal wires and a tubular grooved jacket, said grooved jacket including juxtapositioned cylindrical cross-section segments surrounding said metal wire strand, each of said cylindrical segments having an outer periphery including one or more helicoidal grooves, each receiving at least one optical fibre; and a tubular sheath having a jacket surrounding said central member and closing said grooves of said grooved jacket, said grooved jacket and said jacket surrounding said central member being metallic.
Claim 2
Dependent Claim
86 words
An optical fibre cable comprising: a central member including a central strand of metal wires and a tubular grooved jacket, said grooved jacket including juxtapositioned cylindrical cross-section segments surrounding said metal wire strand, each of said cylindrical segments having an outer periphery including one or more helicoidal grooves, each receiving at least one optical fibre; and a tubular sheath having a jacket surrounding said central member and closing said grooves of said grooved jacket, said grooved jacket and said jacket surrounding said central member being metallic.
Claim 3
Dependent Claim
14 words
An optical fibre cable according to claim 1 wherein said cylindrical segments are extruded.
Claim 4
Dependent Claim
32 words
An optical fibre cable according to claim 1 or 2 wherein said cylindrical segments are secured to each other by an assembly of tongues and grooves in radial edges of the segments.
Claim 5
Dependent Claim
14 words
An optical fibre cable according to claim 1 wherein said cylindrical segments are rolled.
Claim 6
Dependent Claim
19 words
An optical fibre cable according to claim 1 or 2 wherein said cylindrical segments are stuck to each other.
Claim 7
Dependent Claim
129 words
An optical fibre cable adapted to be used underwater comprising: a central member including a central strand of metal wires and a tubular grooved jacket surrounding said strand, said jacket including peripheral helical grooves each receiving at least one optical fibre; a tubular sheath having a jacket surrounding said central member and closing said grooves of said grooved jacket; said grooved jacket and said jacket surrounding said central member being metallic; and an agent for substantially preventing the transmission of isostatic pressure to the optical fibres, the agent filling the bottom of said grooves so the agent does not contact said first inner jacket of said sheath while retaining said optical fibres on said bottom of said grooves, said first inner jacket applying no pressure to said optical fibres.
Claim 8
Dependent Claim
129 words
An optical fibre cable adapted to be used underwater comprising: a central member including a central strand of metal wires and a tubular grooved jacket surrounding said strand, said jacket including peripheral helical grooves each receiving at least one optical fibre; a tubular sheath having a jacket surrounding said central member and closing said grooves of said grooved jacket; said grooved jacket and said jacket surrounding said central member being metallic; and an agent for substantially preventing the transmission of isostatic pressure to the optical fibres, the agent filling the bottom of said grooves so the agent does not contact said first inner jacket of said sheath while retaining said optical fibres on said bottom of said grooves, said first inner jacket applying no pressure to said optical fibres.
Claim 9
Dependent Claim
97 words
An optical fibre cable comprising: a central member including a central strand of metal wires and a tubular grooved jacket surrounding said strand, said jacket including peripheral helical grooves each receiving at least one optical fibre; a composite tubular sheath including: a first inner jacket surrounding said central member and closing said grooves of said grooved jacket, a first tubular insulating jacket surrounding said first inner jacket, a second tubular metal jacket surrounding said first insulating jacket, and a second tubular insulating jacket surrounding said second metal jacket, each of said jackets being coaxial with each other.
Claim 10
Dependent Claim
97 words
An optical fibre cable comprising: a central member including a central strand of metal wires and a tubular grooved jacket surrounding said strand, said jacket including peripheral helical grooves each receiving at least one optical fibre; a composite tubular sheath including: a first inner jacket surrounding said central member and closing said grooves of said grooved jacket, a first tubular insulating jacket surrounding said first inner jacket, a second tubular metal jacket surrounding said first insulating jacket, and a second tubular insulating jacket surrounding said second metal jacket, each of said jackets being coaxial with each other.
Claim 11
Dependent Claim
16 words
An optical fibre cable according to claim 6 or 7 wherein said grooved jacket is extruded.
Claim 12
Dependent Claim
27 words
An optical fibre cable according to claim 6 or 7 wherein said grooved jacket is rolled and welded around said metal wire strand of said central member.
Claim 13
Dependent Claim
23 words
An optical fibre cable according to claim 6 or 7 wherein said grooves in said grooved jacket of the central member are machined.
Claim 14
Dependent Claim
38 words
An optical fibre cable according to claim 6 or 7 wherein said grooved jacket is made of an alloy selected from the group consisting of a high aluminium and copper content, a high aluminium content, steel or Duralinox.
Claim 15
Dependent Claim
25 words
An optical fibre cable according to claim 6 or 7 wherein the average width of grooves in said grooved jacket is less than 2 mm.
Claim 16
Dependent Claim
41 words
An optical fibre cable according to claim 12 wherein said grooved jacket is made of an alloy selected from the group consisting of a high aluminium and copper content, a high aluminium content, a high aluminium and copper content, or Duralinox.
Claim 17
Dependent Claim
26 words
The cable of claim 6 or 7 wherein the distance between proximal walls of two adjacent grooves in said grooved jacket is more than 2 mm.
Claim 18
Dependent Claim
24 words
The cable of claim 11 wherein the distance between proximal walls of two adjacent grooves in said grooved jacket is more than 2 mm.
Claim 19
Dependent Claim
22 words
An optical fibre cable according to claim 6 or 7 wherein the thickness of said grooved jacket is more than 4 mm.
Claim 20
Dependent Claim
20 words
An optical fibre cable according to claim 11 wherein the thickness of said grooved jacket is more than 4 mm.
Claim 21
Dependent Claim
27 words
An optical fibre cable according to claim 7 wherein the critical pressure of said first inner jacket of said sheath is greater than 8 daN/mm 2 .
Claim 22
Dependent Claim
27 words
An optical fibre cable according to claim 11 wherein the critical pressure of said first inner jacket of said sheath is greater than 8 daN/mm 2 .
Claim 23
Dependent Claim
41 words
An optical fibre cable according to claim 7 wherein said first inner jacket of said composite sheath is made of an alloy selected from the group consisting of a high aluminium and copper content, a high aluminium content, steel or Duralinox.
Claim 24
Dependent Claim
26 words
An optical fibre cable according to claim 7 wherein the thickness of said first inner jacket of said sheath is at least equal to 0.5 mm.
Claim 25
Dependent Claim
26 words
An optical fibre cable according to claim 20 wherein the thickness of said first inner jacket of said sheath is at least equal to 0.5 mm.
Claim 26
Dependent Claim
14 words
An optical fibre cable according to claim 7 wherein said insulating jackets are plastic.
Claim 27
Dependent Claim
14 words
An optical fibre cable according to claim 7 wherein said insulating jacket are polyethylene.
Claim 28
Dependent Claim
55 words
An optical fibre cable according to claim 6 or 7 wherein each of said grooves comprises in seriatim a helical portion with a right-hand pitch, a transition portion and a helical portion with a left-hand pitch and so on, each of said fibres extending substantially through the length of a groove associated with the fibre.
Claim 29
Dependent Claim
34 words
An optical fibre cable according to claim 6 or 7 wherein a part of the optical fibres is received in said grooves so it follows a sinous path and is longer than said grooves.
Claim 30
Dependent Claim
110 words
An optical fibre cable comprising: a central member including a central strand of metal wires and a tubular grooved jacket surrounding said strand, said jacket including peripheral helical grooves each receiving at least one optical fibre, each of said grooves comprising in seriatim a helical portion with a right-hand pitch, a transition portion and a helical portion with a left-hand pitch and so on, each of said fibres extending substantially through the length of a groove associated with the fibre; a tubular sheath having a jacket surrounding said central member and closing said grooves of said grooved jacket; said grooved jacket and said jacket surrounding said central member being metallic.
Claim 31
Dependent Claim
110 words
An optical fibre cable comprising: a central member including a central strand of metal wires and a tubular grooved jacket surrounding said strand, said jacket including peripheral helical grooves each receiving at least one optical fibre, each of said grooves comprising in seriatim a helical portion with a right-hand pitch, a transition portion and a helical portion with a left-hand pitch and so on, each of said fibres extending substantially through the length of a groove associated with the fibre; a tubular sheath having a jacket surrounding said central member and closing said grooves of said grooved jacket; said grooved jacket and said jacket surrounding said central member being metallic.
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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) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |