EP0003104B1 - Electric coaxial cable - Google Patents
Electric coaxial cable Download PDFInfo
- Publication number
- EP0003104B1 EP0003104B1 EP79100012A EP79100012A EP0003104B1 EP 0003104 B1 EP0003104 B1 EP 0003104B1 EP 79100012 A EP79100012 A EP 79100012A EP 79100012 A EP79100012 A EP 79100012A EP 0003104 B1 EP0003104 B1 EP 0003104B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cords
- central conductor
- diameter
- fact
- polyethylene
- 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
Links
- 239000004020 conductor Substances 0.000 claims description 28
- -1 polyethylene Polymers 0.000 claims description 15
- 239000004698 Polyethylene Substances 0.000 claims description 14
- 229920000573 polyethylene Polymers 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 8
- 239000004760 aramid Substances 0.000 claims description 5
- 229920003235 aromatic polyamide Polymers 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 229920002367 Polyisobutene Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000003566 sealing material Substances 0.000 claims 1
- 229920000271 Kevlar® Polymers 0.000 description 7
- 239000004761 kevlar Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 239000012212 insulator Substances 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920001038 ethylene copolymer Polymers 0.000 description 2
- 239000004953 Aliphatic polyamide Substances 0.000 description 1
- 241000251556 Chordata Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920003231 aliphatic polyamide Polymers 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- ALEXXDVDDISNDU-JZYPGELDSA-N cortisol 21-acetate Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)COC(=O)C)(O)[C@@]1(C)C[C@@H]2O ALEXXDVDDISNDU-JZYPGELDSA-N 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
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
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1834—Construction of the insulation between the conductors
-
- 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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
Definitions
- the present invention relates to a coaxial electric cable, comprising at least one central conductor, surrounded by an electrical insulator, an external conductor and an insulating sheath, and further comprising longitudinal cords made of aromatic polyamide fibers agglomerated by a resin.
- the electric cables currently used include load-bearing elements making it possible to suspend them between posts, or vertically. These load-bearing elements consist of steel wires responsible for supporting the mechanical forces. These wires are sometimes introduced into the core of cables (submarine coaxial cables) or between conductors. Most often, they are wrapped around cables, of which they constitute an external armor.
- the metallic load-bearing elements have the drawback of modifying the dielectric characteristics of the insulator. In addition, they increase the volume of the cable when they constitute the external armor, and in any event significantly increase its weight.
- Publication DE-A-25 22 849 describes a coaxial cable successively comprising, from its axis, a central conductor, an insulator, an external conductor, a layer of an ethylene copolymer, strings resistant to tensile fibers of glass or aromatic polyamide, and an external polyethylene sheath.
- the outer sheath is welded to the layer of ethylene copolymer at the time of its application, for example by spraying, so that the tensile-resistant cords adhere to it.
- Such a structure is somewhat complex, requires a relatively large cable diameter and does not ensure perfect connection of the strings with the rest of the cable.
- the present invention aims to provide a coaxial cable in longitudinal carriers strings, which has a simple structure and is very compact, which is relatively small in diameter and more light per unit length, despite the excellent resistance tensile, and does not disturb the dielectric characteristics of the insulation.
- the electric cable according to the invention is characterized in that the longitudinal cords are arranged between the central conductor and the external conductor and embedded in the electrical insulation.
- the electric cable according to the invention also preferably includes at least one of the characteristics defined by the subclaims.
- FIG. 1 shows in cross section a coaxial cable with six carrying cords, in aromatic polyamide of the brand "Kevlar” from the company Du Pont de Nemours, marketed by the Company Cordes Europe France.
- FIG. 2 also shows in cross section a coaxial cable with four analogous carrying cords.
- FIG. 3 represents a coaxial cable with six carrying cords, each formed by seven stranded cords.
- FIG. 4 represents a coaxial cable with two layers of carrying cords, an inner layer with nine cords and an outer layer with sixteen cords.
- the cable of FIG. 1 comprises a central conductor 1 formed of seven stranded wires of red copper, not restricted. This conductor is surrounded by six cords 2 of the brand "Cef", formed by fine fibers of the aromatic polyamide of the brand “Kevlar” marketed by Du Pont de Nemours, impregnated with a hardenable resin and braided. These cords are embedded in an insulator 3 made of polyethylene. Such strings have a density of 1 to 1, 2, a breaking strength of 1500 to 1800 N / mm 2 , and an elongation at break of 2 to 3%.
- the assembly is obtained by extruding the insulation in an extruder comprising an axial punch through which the central conductor and the cords pass.
- the external conductor consists of a braid 4 of red copper wires.
- the assembly is surrounded by a sheath 5 made of polyvinyl chloride or polyethylene.
- the cable of FIG. 2 is similar to that of FIG. 1, but only has four "Kevlar" cords 2, with a diameter slightly greater than that of the strings of FIG. 1.
- the cable of FIG. 3 comprises a central conductor 1, of seven stranded wires of red copper, not shrunk. The latter is surrounded by polyethylene insulation 3, in which six "Cef" cords are embedded, each composed of seven strands stranded in "Kevlar” fibers agglomerated by a resin. In three of these strings 11, 13, 15, the direction of winding of the cords is to the right, while it is to the left in the other three strings 12, 14, 16, alternated with the first.
- the cable furthermore comprises, like the previous ones, an outer conductor 4 made of copper braid, and a sheath 5 made of polyvinyl chloride or polyethylene.
- the cable of Figure 4 has the same central conductor 1 of seven stranded copper wires, not constricted. This conductor is surrounded by two concentric layers of "Cef" cords.
- the inner layer consists of six cords 21 of "Kevlar” fibers, alternated with three cords 22 of "Kevlar” fibers of smaller diameter, sheathed in polyethylene to a diameter equal to that of the other cords. These strings are rolled helically around the central conductor.
- the outer layer is formed by four cords 23, alternated with twelve cords 24 of smaller diameter, sheathed in polyethylene until the same outside diameter is obtained.
- the strings of the two layers are wound helically around the central conductor, the pitch of the outer layer being greater than that of the inner layer.
- the assembly of the central conductor and of the two layers of cords is embedded in an insulator 3 made of polyethylene, surrounded by a braid 4 of red copper wires and an outer sheath 5 made of polyvinyl chloride or polyethylene.
- the proportion of polyamide "Kevlar” wires or ribbons incorporated in the dielectric is chosen according to the qualities to be respected (mechanical resistance, impedance, weakening).
Landscapes
- Insulated Conductors (AREA)
- Communication Cables (AREA)
- Ropes Or Cables (AREA)
Description
La présente invention concerne un câble électrique coaxial, comprenant au moins un conducteur central, entouré d'un isolant électrique, d'un conducteur externe et d'une gaine isolante, et comportant en outre des cordes longitudinales en fibres de polyamide aromatique agglomérées par une résine.The present invention relates to a coaxial electric cable, comprising at least one central conductor, surrounded by an electrical insulator, an external conductor and an insulating sheath, and further comprising longitudinal cords made of aromatic polyamide fibers agglomerated by a resin.
Les câbles électriques actuellement utilisés comportent des éléments porteurs permettant de les suspendre entre poteaux, ou verticalement. Ces éléments porteurs sont constitués par des fils d'acier chargés de supporter les efforts mécaniques. Ces fils sont quelquefois introduits dans l'âme des câbles (câbles coaxiaux sous-marins) ou entre des conducteurs. Le plus souvent, ils sont enroulés autour des câbles, dont ils constituent une armure externe.The electric cables currently used include load-bearing elements making it possible to suspend them between posts, or vertically. These load-bearing elements consist of steel wires responsible for supporting the mechanical forces. These wires are sometimes introduced into the core of cables (submarine coaxial cables) or between conductors. Most often, they are wrapped around cables, of which they constitute an external armor.
Les éléments porteurs métalliques présentent l'inconvénient de modifier les caractéristiques diélectriques de l'isolant. Par ailleurs, ils accroissent le volume du câble quand ils en constituent l'armure externe, et en tout état de cause augmentent de façon très notable son poids.The metallic load-bearing elements have the drawback of modifying the dielectric characteristics of the insulator. In addition, they increase the volume of the cable when they constitute the external armor, and in any event significantly increase its weight.
Il a déjà été proposé de munir un câble électrique d'un élément porteur longitudinal en résine synthétique, par exemple en polyamide aliphatique telle que celle connue sous la marque "Nylon", en polytéréphtalate d'éthylène-glycol, en polyesters, polyoléfines, polycarbonates, etc. (publications FR-A-2 039 355, US-A-3 265 809 et 3 980 808). De tels éléments présentent l'inconvénient de permettre un allongement notable du câble et de mal résister à l'humidité, de sorte que l'on a continué à utiliser des éléments porteurs métalliques, en dépit de leurs inconvénients.It has already been proposed to provide an electrical cable with a longitudinal support element made of synthetic resin, for example of aliphatic polyamide such as that known under the brand "Nylon", of polyethylene terephthalate, of polyesters, polyolefins, polycarbonates , etc. (publications FR-A-2 039 355, US-A-3 265 809 and 3 980 808). Such elements have the disadvantage of allowing a significant elongation of the cable and poor resistance to humidity, so that we continued to use metallic load-bearing elements, despite their drawbacks.
La publication DE-A-25 22 849 décrit un câble coaxial comprenant successivement à partir de son axe, un conducteur central, un isolant, un conducteur extérieur, une couche d'un copolymère d'éthylène, des cordes résistantes à la traction en fibres de verre ou de polyamide aromatique, et une gaine externe en polyéthylène. La gaine externe se soude à la couche de copolymère d'éthylène au moment de son application, par exemple par pulvérisation, afin que les cordes résistantes à la traction lui adhèrent. Une telle structure est quelque peu complexe, nécessite un diamètre de câble relativement important et n'assure pas une solidarisation parfaite des cordes avec le reste du câble.Publication DE-A-25 22 849 describes a coaxial cable successively comprising, from its axis, a central conductor, an insulator, an external conductor, a layer of an ethylene copolymer, strings resistant to tensile fibers of glass or aromatic polyamide, and an external polyethylene sheath. The outer sheath is welded to the layer of ethylene copolymer at the time of its application, for example by spraying, so that the tensile-resistant cords adhere to it. Such a structure is somewhat complex, requires a relatively large cable diameter and does not ensure perfect connection of the strings with the rest of the cable.
La présente invention a pour but de procurer un câble coaxial à cordes porteuses longitudinales, qui soit de structure simple et présente une grande compacité, qui soit de diamètre relativement faible et par suite léger par unité de longueur,len dépit d'une excellente résistance à la traction, et ne perturbe pas les caractéristiques diélectriques de l'isolant.The present invention aims to provide a coaxial cable in longitudinal carriers strings, which has a simple structure and is very compact, which is relatively small in diameter and more light per unit length, despite the excellent resistance tensile, and does not disturb the dielectric characteristics of the insulation.
Le câble électrique selon l'invention est caractérisé en ce que les cordes longitudinales sont disposées entre le conducteur central et le conducteur externe et noyées dans l'isolant électrique.The electric cable according to the invention is characterized in that the longitudinal cords are arranged between the central conductor and the external conductor and embedded in the electrical insulation.
Le câble électrique selon l'invention comporte en outre de préférence au moins l'une des caractéristiques définies par les sous- revendications.The electric cable according to the invention also preferably includes at least one of the characteristics defined by the subclaims.
Il est décrit ci-après, à titre d'exemples et en référence aux figures du dessin, des câbles coaxiaux selon l'invention.Coaxial cables according to the invention are described below, by way of examples and with reference to the figures in the drawing.
La figure 1 représente en coupe transversale un câble coaxial à six cordes porteuses, en polyamide aromatique de la marque "Kevlar" de la société Du Pont de Nemours, commercialisées par la Société Cordes Europe France.FIG. 1 shows in cross section a coaxial cable with six carrying cords, in aromatic polyamide of the brand "Kevlar" from the company Du Pont de Nemours, marketed by the Company Cordes Europe France.
La figure 2 représente également en coupe transversale un câble coaxial à quatre cordes porteuses analogues.FIG. 2 also shows in cross section a coaxial cable with four analogous carrying cords.
La figure 3 représente un câble coaxial à six cordes porteuses, formées chacune de sept cordons toronnés.FIG. 3 represents a coaxial cable with six carrying cords, each formed by seven stranded cords.
La figure 4 représente un câble coaxial à deux couches de cordes porteuses, une couche interne à neuf cordes et une couche externe à seize cordes.FIG. 4 represents a coaxial cable with two layers of carrying cords, an inner layer with nine cords and an outer layer with sixteen cords.
Le câble de la figure 1 comprend un conducteur central 1 formé de sept fils toronnés de cuivre rouge, non rétreint. Ce conducteur est entouré de six cordes 2 de la marque "Cef", formées par des fibres fines de la polyamide aromatique de la marque "Kevlar" commercialisée par Du Pont de Nemours, imprégnées d'une résine durcissable et tressées. Ces cordes sont noyées dans un isolant 3 en polyéthylène. De telles cordes présentent une densité de 1 à 1, 2, une résistance à la rupture de 1500 à 1800 N/mm2, et un allongement à la rupture de 2 à 3%. L'ensemble est obtenu par extrusion de l'isolant dans une extrudeuse comportant un poinçon axial dans lequel passent la conducteur central et les cordes.The cable of FIG. 1 comprises a central conductor 1 formed of seven stranded wires of red copper, not restricted. This conductor is surrounded by six
Le conducteur externe est constitué par une tresse 4 de fils de cuivre rouge. L'ensemble est entouré d'une gaine 5 en polychlorure de vinyle ou en polyéthylène.The external conductor consists of a braid 4 of red copper wires. The assembly is surrounded by a
Le câble de la figure 2 est analogue à celui de la figure 1, mais ne comporte que quatre cordes en "Kevlar" 2, de diamètre un peu supérieur à celui des cordes de la figure 1.The cable of FIG. 2 is similar to that of FIG. 1, but only has four "Kevlar"
Le câble de la figure 3 comprend un conducteur central 1, de sept fils toronnés de cuivre rouge, non rétreint. Celui-ci est entouré d'un isolant 3 en polyéthylène, dans lequel sont noyées six cordes "Cef" composées chacune de sept cordons toronnés en fibres de "Kevlar" agglomérées par une résine. Dans trois de ces cordes 11, 13, 15, le sens d'enroulement des cordons est vers la droite, cependant qu'il est vers la gauche dans les trois autres cordes 12, 14, 16, alternées avec les premières. Le câble comprend en outre comme les précédents un conducteur extérieur 4 en tresse de fils de cuivre, et une gaine 5 en polychlorure de vinyle ou en polyéthylène.The cable of FIG. 3 comprises a central conductor 1, of seven stranded wires of red copper, not shrunk. The latter is surrounded by
Le câble de la figure 4 comporte le même conducteur central 1 de sept fils toronnés de cuivre, non rétreint. Ce conducteur est entouré de deux couches concentriques de cordes "Cef". La couche interne se compose de six cordes 21 de fibres de "Kevlar", alternées avec trois cordes 22 de fibres de "Kevlar" de diamètre moindre, gainées de polyéthylène jusqu'à un diamètre égal à celui des autres cordes. Ces cordes sont en roulées hélicoidale- ment autour du conducteur central. La couche externe est formée de quatre cordes 23, alternées avec douze cordes 24 de diamètre moindre, gainées de polyéthylène jusqu'à obtenir le même diamètre extérieur. Les cordes des deux couches sont enroulées hélicoïdale- ment autour du conducteur central, le pas de la couche externe étant supérieur à celui de la couche interne. L'ensemble du conducteur central et des deux couches de cordes est noyé dans un isolant 3 en polyéthylène, entouré d'une tresse 4 de fils de cuivre rouge et d'une gaine externe 5 en polychlorure de vinyle ou polyéthylène.The cable of Figure 4 has the same central conductor 1 of seven stranded copper wires, not constricted. This conductor is surrounded by two concentric layers of "Cef" cords. The inner layer consists of six
On peut en outre assurer une meilleure étanchéité de l'assemblage de la première couche de cordes sur le conducteur central, et la seconde couche sur la première, en introduisant sur les pourtours du conducteur central et de la première couche de cordes un matériau de remplissage et d'étanchéité, tel que du poly- isobutylène de faible masse moléculaire chargé de poudre de silice.We can also ensure a better seal of the assembly of the first layer of cords on the central conductor, and the second layer on the first, by introducing around the edges of the central conductor and the first layer of cords a filling material. and sealing, such as low molecular weight polyisobutylene loaded with silica powder.
La proportion de fils ou rubans de polyamide "Kevlar" incorporés dans le diélectrique est choisie en fonction des qualités à respecter (résistance mécanique, impédance, affaiblissement).The proportion of polyamide "Kevlar" wires or ribbons incorporated in the dielectric is chosen according to the qualities to be respected (mechanical resistance, impedance, weakening).
L'allongement sous effort d'un tel câble est très faible (1 à 2% environ), et son encombrement extrêmement réduit. Il en résulte un gain de volume, une réduction de poids, une diminution des rayons d'enroulement, une réduction de la prise au vent et au givre, qui conduisent à une réduction de l'infrastructure.The elongation under stress of such a cable is very low (1 to 2% approximately), and its size extremely reduced. This results in a gain in volume, a reduction in weight, a reduction in the winding radii, a reduction in the absorption of wind and frost, which lead to a reduction of the infrastructure.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7800506 | 1978-01-10 | ||
| FR7800506A FR2414243A1 (en) | 1978-01-10 | 1978-01-10 | ELECTRIC CABLE WITH LONGITUDINAL CARRIER ELEMENT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0003104A1 EP0003104A1 (en) | 1979-07-25 |
| EP0003104B1 true EP0003104B1 (en) | 1981-10-14 |
Family
ID=9203244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79100012A Expired EP0003104B1 (en) | 1978-01-10 | 1979-01-03 | Electric coaxial cable |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4259544A (en) |
| EP (1) | EP0003104B1 (en) |
| JP (2) | JPS5497792A (en) |
| CA (1) | CA1112733A (en) |
| DE (1) | DE2960935D1 (en) |
| FR (1) | FR2414243A1 (en) |
Cited By (3)
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|---|---|---|---|---|
| US9027657B2 (en) | 2009-09-22 | 2015-05-12 | Schlumberger Technology Corporation | Wireline cable for use with downhole tractor assemblies |
| US9412492B2 (en) | 2009-04-17 | 2016-08-09 | Schlumberger Technology Corporation | Torque-balanced, gas-sealed wireline cables |
| US11387014B2 (en) | 2009-04-17 | 2022-07-12 | Schlumberger Technology Corporation | Torque-balanced, gas-sealed wireline cables |
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| US4518830A (en) * | 1982-06-25 | 1985-05-21 | At&T Bell Laboratories | Armored telephone cord with a longitudinal strength member |
| GB2374721B (en) * | 1986-05-17 | 2003-02-26 | Stc Plc | Coaxial cable |
| US4837815A (en) * | 1986-06-26 | 1989-06-06 | Nynex Corporation | Armored cord handset |
| USRE33647E (en) * | 1986-10-06 | 1991-07-23 | Apparatus for anchoring a telephone handset to a telephone housing | |
| US4845774A (en) * | 1986-10-06 | 1989-07-04 | Raymond Arzounian | Apparatus for anchoring a telephone handset to a telephone housing |
| CA2003279A1 (en) * | 1988-11-18 | 1990-05-18 | Anthony Peter Harvey | Construction of towed streamers |
| JP3028488B2 (en) * | 1989-11-20 | 2000-04-04 | トヨクニ電線株式会社 | Emergency communication installation method and emergency communication cable |
| US5180890A (en) * | 1991-03-03 | 1993-01-19 | Independent Cable, Inc. | Communications transmission cable |
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| GB0425584D0 (en) * | 2004-11-20 | 2004-12-22 | Expro North Sea Ltd | Improved cable |
| US8413723B2 (en) | 2006-01-12 | 2013-04-09 | Schlumberger Technology Corporation | Methods of using enhanced wellbore electrical cables |
| US7326854B2 (en) | 2005-06-30 | 2008-02-05 | Schlumberger Technology Corporation | Cables with stranded wire strength members |
| US7462781B2 (en) * | 2005-06-30 | 2008-12-09 | Schlumberger Technology Corporation | Electrical cables with stranded wire strength members |
| NO20073832L (en) * | 2007-07-20 | 2009-01-21 | Fmc Kongsberg Subsea As | composite Cable |
| US8697992B2 (en) | 2008-02-01 | 2014-04-15 | Schlumberger Technology Corporation | Extended length cable assembly for a hydrocarbon well application |
| GB2479725B (en) * | 2010-04-19 | 2012-08-22 | Technip France | Umbilical |
| US10522270B2 (en) | 2015-12-30 | 2019-12-31 | Polygroup Macau Limited (Bvi) | Reinforced electric wire and methods of making the same |
| CN114520075B (en) * | 2022-02-25 | 2024-05-14 | 武汉市钢电电线制造有限公司 | Cable for pipeline robot and manufacturing process |
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| NL300943A (en) * | 1963-01-29 | |||
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-
1978
- 1978-01-10 FR FR7800506A patent/FR2414243A1/en active Granted
-
1979
- 1979-01-03 EP EP79100012A patent/EP0003104B1/en not_active Expired
- 1979-01-03 DE DE7979100012T patent/DE2960935D1/en not_active Expired
- 1979-01-04 US US06/000,944 patent/US4259544A/en not_active Expired - Lifetime
- 1979-01-09 CA CA319,329A patent/CA1112733A/en not_active Expired
- 1979-01-10 JP JP76979A patent/JPS5497792A/en active Pending
-
1988
- 1988-01-13 JP JP1988002105U patent/JPS63133024U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9412492B2 (en) | 2009-04-17 | 2016-08-09 | Schlumberger Technology Corporation | Torque-balanced, gas-sealed wireline cables |
| US11387014B2 (en) | 2009-04-17 | 2022-07-12 | Schlumberger Technology Corporation | Torque-balanced, gas-sealed wireline cables |
| US9027657B2 (en) | 2009-09-22 | 2015-05-12 | Schlumberger Technology Corporation | Wireline cable for use with downhole tractor assemblies |
| US9677359B2 (en) | 2009-09-22 | 2017-06-13 | Schlumberger Technology Corporation | Wireline cable for use with downhole tractor assemblies |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63133024U (en) | 1988-08-31 |
| FR2414243A1 (en) | 1979-08-03 |
| EP0003104A1 (en) | 1979-07-25 |
| US4259544A (en) | 1981-03-31 |
| CA1112733A (en) | 1981-11-17 |
| FR2414243B1 (en) | 1980-08-22 |
| JPS5497792A (en) | 1979-08-02 |
| DE2960935D1 (en) | 1981-12-24 |
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