US3914533A - Electric telecommunication cable having an axial carrier core - Google Patents
Electric telecommunication cable having an axial carrier core Download PDFInfo
- Publication number
- US3914533A US3914533A US445761A US44576174A US3914533A US 3914533 A US3914533 A US 3914533A US 445761 A US445761 A US 445761A US 44576174 A US44576174 A US 44576174A US 3914533 A US3914533 A US 3914533A
- Authority
- US
- United States
- Prior art keywords
- carrier core
- telecommunication cable
- metal strip
- cable
- electric telecommunication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/14—Submarine cables
Definitions
- the carrier cable may also be coated with a film of thermostatic material and the internal face of the tape [56] References Cit d is coated with a similar film, the two films then being UNITED STATES PATENTS cemented 10 each other.
- central conductor consists of a metallic strip which is bent to form a cylinder, the edges of said strip which are situated opposite to each other being welded longitudinally, the tube thus formed being then crimped onto the carrier core.
- Such a method has a certain number of disadvantages, to which the cable according to the invention is not subjected.
- the cable according to the invention is characterised in that the strip forming the central conductor is a composite metal strip composed, for example, of a lamination of two different metals and is cemented to the carrier core.
- the accompanying drawing shows diagrammatically an end of such a cable.
- 1 designates the carrier core
- 2 the layer of cement
- 3 the internal composite conductor
- 4 the insulation
- 5 the external conductor
- 6 the external sheath.
- Such a cable may be produced by various methods.
- a compound or compound strip whose external face is made of a good conducting metal, and whose internal face is made of a metal which adheres easily to steel.
- a strip is typically made by laminating the two metals without the use of an adhesive.
- the external face may be made of copper and the internal face may be made of aluminium, which can be welded more easily to steel than copper.
- a copper-iron or aluminium-iron strip could also be used.
- the composite strip is bent to fonn a cylinder and its edges are welded longitudinally.
- Another method consists in covering the carrier core either as a whole, or each of its wires individually, with a film of thermoplastic material such as polyethylene, and in using as the conductor a metal strip at least whose internal surface is previously coated with a layer of similar material, said layer being welded or cemented to the thermoplastic film of the carrier core.
- a film of thermoplastic material such as polyethylene
- the cement may be applied to the carrier core by any method; for example, by immersion or impregnation, or even in the form of a compound applied by extrusion.
- Another method consists in coating the carrier core with a cement, and applying over said core the metallic conductor, composite or otherwise but preferably composite, said conductor being or not coated with a dielectric or non-dielectric film, specially treated or not, on its internal face, with a view to increasing the efficiency of the cementing.
- the cementing method according to the invention makes it possible to use, as the conductor, a folded back strip whose longitudinal edges are simply contiguous without overlapping. But a band folded and overlapping may also be used.
- the cement may be, for example, polyisocyanate or an epoxy resin.
- An electric telecommunication cable comprising an axial carrier core made of steel wires on which is welded a central conductor consisting of a composite metal strip having an external face made of copper and an internal face made of a metal which readily adheres to steel, said metal strip being bent to form a cylinder and its edges which are situated opposite to each other being welded longitudinally, the metals of said external and internal faces of said composite metal strip being mechanically and electrically connected.
Landscapes
- Insulated Conductors (AREA)
- Communication Cables (AREA)
Abstract
Electric telecommunication cable having an axial carrier core, characterized in that the central conductor is bonded to the carrier core. The tape constituting the said conductor may be bimetallic, its internal face being made of a metal which is easy to welded to steel. The carrier cable may also be coated with a film of thermostatic material and the internal face of the tape is coated with a similar film, the two films then being cemented to each other.
Description
United States Patent 11 1 1111 3,914,533 Bendayan 1 Oct. 21, 1975 [54] ELECTRIC TELECOMMUNICATION 3,239,916 3/1966 Love 174/117 A CABLE HAVING AN AXIAL CARRIER 3,309,455 3/1967 Mildner 1 174/131 A CORE 3,681,515 9/1972 Mildner 1 174/110 PM 3,717,719 2/1973 Smith 174/126 CP [75] Inventor: Jacques Bendayan, Lyon, France FOREIGN PATENTS OR APPLICATIONS 1 1 Assigneei Les Cables de Lyon, Lyon, France 198,739 6/1923 United Kingdom 174/117 A [22] Filed: Feb. 25, 1974 Primary Examiner-E. A. Goldberg 1 1 PP N05 1 Attorney, Agent, or FirmSughrue, Rothwell, Mion,
I Zinn & Macpeak [30] Foreign Application Priority Data Feb. 23, 1973 France 73.06595 [57] ABSTRACT Electric telecommunication cable having an axial car- [52] US. Cl 174/126 CP; 174/102 R; 174/107; rier core, characterized in that the central conductor 174/13] R is bonded to the carrier core. The tape constituting [51] Int. Cl. H01B 5/00; H01B 11/00 the a conductor m y be bi-metallic, ts internal face [58] Field of Search... 174/131 A, 126 CP, 1 10 PM, being made ofa metal which is easy to welded to steel. 174/113 C, 117 A, 107, 130, 131 R, 102 R The carrier cable may also be coated with a film of thermostatic material and the internal face of the tape [56] References Cit d is coated with a similar film, the two films then being UNITED STATES PATENTS cemented 10 each other.
2,450,429 10/1948 Henning 174/113 C 2 Claims, 1 Drawing Figure ELECTRIC TELECOMMUNICAT ION CABLE HAVING AN AXIAL CARRIER CORE The invention applies to telecommunication cables and more especially to submarine cables, comprising an axial carrier core made of steel wires on which is applied a good conducting metal tube which constitutes the central conductor of the cable.
According to the known technique, that central conductor consists of a metallic strip which is bent to form a cylinder, the edges of said strip which are situated opposite to each other being welded longitudinally, the tube thus formed being then crimped onto the carrier core.
Such a method has a certain number of disadvantages, to which the cable according to the invention is not subjected.
The cable according to the invention is characterised in that the strip forming the central conductor is a composite metal strip composed, for example, of a lamination of two different metals and is cemented to the carrier core.
The accompanying drawing shows diagrammatically an end of such a cable. In said drawing, 1 designates the carrier core, 2 the layer of cement, 3 the internal composite conductor, 4 the insulation, 5 the external conductor and 6 the external sheath.
Such a cable may be produced by various methods.
It is possible, more particularly, to treat the internal surface of the strip to make easier the cementing thereof to the steel wires of the carrier core.
It is also possible and preferable to use a compound or compound strip whose external face is made of a good conducting metal, and whose internal face is made of a metal which adheres easily to steel. Such a strip is typically made by laminating the two metals without the use of an adhesive. For example, the external face may be made of copper and the internal face may be made of aluminium, which can be welded more easily to steel than copper. A copper-iron or aluminium-iron strip could also be used. The composite strip is bent to fonn a cylinder and its edges are welded longitudinally.
Another method consists in covering the carrier core either as a whole, or each of its wires individually, with a film of thermoplastic material such as polyethylene, and in using as the conductor a metal strip at least whose internal surface is previously coated with a layer of similar material, said layer being welded or cemented to the thermoplastic film of the carrier core.
The cement may be applied to the carrier core by any method; for example, by immersion or impregnation, or even in the form of a compound applied by extrusion.
Another method consists in coating the carrier core with a cement, and applying over said core the metallic conductor, composite or otherwise but preferably composite, said conductor being or not coated with a dielectric or non-dielectric film, specially treated or not, on its internal face, with a view to increasing the efficiency of the cementing.
The cementing method according to the invention makes it possible to use, as the conductor, a folded back strip whose longitudinal edges are simply contiguous without overlapping. But a band folded and overlapping may also be used.
The cement may be, for example, polyisocyanate or an epoxy resin.
I claim:
1. An electric telecommunication cable comprising an axial carrier core made of steel wires on which is welded a central conductor consisting of a composite metal strip having an external face made of copper and an internal face made of a metal which readily adheres to steel, said metal strip being bent to form a cylinder and its edges which are situated opposite to each other being welded longitudinally, the metals of said external and internal faces of said composite metal strip being mechanically and electrically connected.
2. An electric telecommunication cable as recited in claim 1 wherein said internal face of said composite metal strip constituting the central conductor is made of aluminum.
Claims (2)
1. An electric telecommunication cable comprising an axial carrier core made of steel wires on which is welded a central conductor consisting of a composite metal strip having an external face made of copper and an internal face made of a metal which readily adheres to steel, said metal strip being bent to form a cylinder and its edges which are situated opposite to each other being welded longitudinally, the metals of said external and internal faces of said composite metal strip being mechanically and electrically connected.
2. An electric telecommunication cable as recited in claim 1 wherein said internal face of said composite metal strip constituting the central conductor is made of aluminum.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7306595A FR2219499B1 (en) | 1973-02-23 | 1973-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3914533A true US3914533A (en) | 1975-10-21 |
Family
ID=9115347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US445761A Expired - Lifetime US3914533A (en) | 1973-02-23 | 1974-02-25 | Electric telecommunication cable having an axial carrier core |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3914533A (en) |
| JP (1) | JPS49114790A (en) |
| FR (1) | FR2219499B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118073020A (en) * | 2024-04-23 | 2024-05-24 | 华远高科电缆有限公司 | New energy copper alloy power cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2450429A (en) * | 1944-08-04 | 1948-10-05 | Western Electric Co | Electrical cord |
| US3239916A (en) * | 1962-10-17 | 1966-03-15 | Whitney Blake Co | Ribbon cable |
| US3309455A (en) * | 1964-09-21 | 1967-03-14 | Dow Chemical Co | Coaxial cable with insulating conductor supporting layers bonded to the conductors |
| US3681515A (en) * | 1971-04-29 | 1972-08-01 | Dow Chemical Co | Electric cables and like conductors |
| US3717719A (en) * | 1971-11-17 | 1973-02-20 | Int Standard Electric Corp | Coaxial cable inner conductor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1182997A (en) * | 1956-12-24 | 1959-07-01 | Western Electric Co | Underwater cable without reinforcement |
| FR1599919A (en) * | 1968-12-12 | 1970-07-20 |
-
1973
- 1973-02-23 FR FR7306595A patent/FR2219499B1/fr not_active Expired
-
1974
- 1974-02-15 JP JP49017758A patent/JPS49114790A/ja active Pending
- 1974-02-25 US US445761A patent/US3914533A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2450429A (en) * | 1944-08-04 | 1948-10-05 | Western Electric Co | Electrical cord |
| US3239916A (en) * | 1962-10-17 | 1966-03-15 | Whitney Blake Co | Ribbon cable |
| US3309455A (en) * | 1964-09-21 | 1967-03-14 | Dow Chemical Co | Coaxial cable with insulating conductor supporting layers bonded to the conductors |
| US3681515A (en) * | 1971-04-29 | 1972-08-01 | Dow Chemical Co | Electric cables and like conductors |
| US3717719A (en) * | 1971-11-17 | 1973-02-20 | Int Standard Electric Corp | Coaxial cable inner conductor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118073020A (en) * | 2024-04-23 | 2024-05-24 | 华远高科电缆有限公司 | New energy copper alloy power cable |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2219499A1 (en) | 1974-09-20 |
| JPS49114790A (en) | 1974-11-01 |
| FR2219499B1 (en) | 1976-05-14 |
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