US3665095A - High-strength non-extensible conductive wire - Google Patents

High-strength non-extensible conductive wire Download PDF

Info

Publication number
US3665095A
US3665095A US78392A US3665095DA US3665095A US 3665095 A US3665095 A US 3665095A US 78392 A US78392 A US 78392A US 3665095D A US3665095D A US 3665095DA US 3665095 A US3665095 A US 3665095A
Authority
US
United States
Prior art keywords
conductive wire
wire
wires
strength
core
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
Application number
US78392A
Other languages
English (en)
Inventor
Pierre Seguin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Moulinage et Retorderie de Chavanoz SA
Original Assignee
Moulinage et Retorderie de Chavanoz SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Moulinage et Retorderie de Chavanoz SA filed Critical Moulinage et Retorderie de Chavanoz SA
Application granted granted Critical
Publication of US3665095A publication Critical patent/US3665095A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/043—Flexible cables, conductors, or cords, e.g. trailing cables attached to flying objects, e.g. aircraft towline, cables connecting an aerodyne to the ground
    • 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
    • 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
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H01B7/226—Helicoidally wound metal wires or tapes

Definitions

  • ..H0lb 7/ 18 al being electrically insulated; a sheath comprising a bundle of 53 i ld f S h H 174/103 107 108 109 1 10 R metallic wires that are either conductive or may be made con- 174 121 R ductive, this sheath having high strength; and a protective envelope comprising at least one coating layer.
  • This high- [56] Reierences Cited strength, low-weight, non-extensible conductive wire is particularly well adapted for use in the remote control of rockets UNITED STATES PATENTS or in other applications where resistance to high temperature and high stress is necessary.
  • This invention relates to a sealed, flexible, non-inflammable, light, non-extensible conductive wire. More particularly, this invention relates to a non-extensible conductive wire having high tensile and bending strength and also good resistance to friction. This invention is particularly well adapted for use in controlling rockets or for other similar applications where a light, strong and flame resistant wire is necessary.
  • the non-extensible conductive wire of the present invention comprises an electrically insulated core, said core comprising a material which is an excellent electrical conductor and an insulating layer, said insulating layer surrounding the conductor material; a sheath comprising a bundle of conductive metallic wires, said metallic wires being inherently conductive or capable of being made conductive, said wires also having a high strength and capable of serving as a mechanical support; and a protective envelope comprising at least one coating layer.
  • FIG. 1 is a schematic view of the wire of the present invention with successive layers removed to show the individual components
  • FIG. 2 shows a cross-sectional view taken along line 2-2, showing the relative location of the various components of the wire of the present invention.
  • the flexible wire produced in accordance with the present invention comprises a core wire 1 and an insulating layer 2.
  • the core wire 1 should be constructed of an excellent electrical conductor such as copper or other similar metallic wires having the same or similar conductance.
  • Insulating layer 2, which surrounds core wire 1, should be a material having a high insulating value, i.e., a low conductance, while at the same time is relatively light and flexible. Suitable materials for the insulating layer 2 comprise various insulating enamels, resinous polymeric films, etc.
  • the core wire should be as thin as possible with a diameter in the range of from 0.05 to 0.15 mm being preferable.
  • the insulating layer also should be as thin as possible, with a layer thickness in the range of from 0.01 to 0.05 mm being preferable.
  • This core wire structure is then sheathed by means of wires 3.
  • FIG. 1 shows six wires 3 used to sheath the core wire, the flexible wire of the present invention is not to be limited to any specific number of sheathing wires.
  • Each of these sheathing wires 3 comprises a core wire 4 which may or may not bewrapped with an insulating material 5.
  • the wire of the present invention may be prepared with uninsulated wires 3, it is preferred to use an insulating yarn such as the various linear polyamides, e.g., nylons, i.e., nylon 6, nylon 66, nylon 610, nylon 11, nylon 12, etc.
  • the core 4 of the sheathing wires comprises a high-strength wire such as any of the various high-strength steels. These wires should either be conductive or capable of being made conductive, and should be approximately from 0.05 to 0.15 mm in diameter.
  • the nylon yarn should be wrapped around the high-strength sheathing wire with a Z-twist having approximately 2000 turns per meter.
  • the twist of the sheathing wires about the core wire should have an S-twist having 250 turns per meter, the twist of the assembly of the wrapped sheathing wire upon the core wires having a compensation twist of about 10 per cent, i.e., a Z-twist of about 25 turns per meter given at the time of the cabling operation.
  • This compensation twist avoids the tendency on the part of the composite wire to kink.
  • the twist around the sheath wires 3 was illustrated as a Z-twist while the wrapping of the sheathing wires around the core wire was illustrated as an S-twist, these twisting directions are not critical with respect to the conductive wire of this invention.
  • it is advantageous to reverse the twist of the wrapping wires around the core wire with respect to the wrapping on the sheathing wires this wrapping scheme is not necessary for the production of the non-extensible conductive wire of the present invention.
  • the yarn useful for wrapping the sheathing wires may be any known insulating material capable of forming a filament or yarn.
  • the cabling operation for producing the composite wire of the present invention may be performed using any known apparatus.
  • the textile yarns may be wrapped around the steel wires using any conventional twisting machine, and similarly the wrapping of the core wires with the steel wires may be done on any known type of strand-laying machine.
  • FIG. 1 illustrates a two-layer coating, i.e., layers 6 and 7, the composite wire of the present invention may have 1, 2, or more successive coatings.
  • the composite wire is coated with a thin layer 6, having a thickness on the order of from 0.005 to 0.015 mm, of an insulating polymer.
  • any insulating polymer such as the various linear polyamides and copolyamides may be used, although an amide copolymer obtained by copolymerizing caprolactam and hexamethylene diamine adipatc, which is deposited from an aqueous alcohol solution, is preferred.
  • this inner coating 6 fills in the spaces between sheathing wires 3.
  • a second coating layer 7 of any heat-sealing polymer such as vinyl polymers and vinyl copolymers, etc.
  • this second coating may be any heat-scalable polymer
  • a thin layer, i.e., on the order of from 0.005 to 0.015 mm, of a copolymer of a vinyl chloride and vinyl propionate dissolved in ethyl acetate is the preferred coating.
  • This copolymer is applied to the composite structure and then baked to form the completed structure.
  • Wires constructed in the above manner have a tensile strength on the order of 14 kg for a diameter in the range of about 0.4 mm. These wires also weigh about 400 g/km and have a coefficient of rupture of about 35,000 (the coefficient of rupture being defined as the ratio of the resistance to rupture in kilograms to the weight of the wire in kilograms per meter). Also, the wires produced in accordance with this invention have an ohmic resistance of about 8,000 ohms per kilometer and a capacitance of 370 pF/m (between straight conductors).
  • the wire of the present invention is very strong, sufficiently thin to allow several kilometers of winding, flexible, and also has desirable electrical properties. Also, even if one of the steel wires is partially damaged because of flames or heat generated during take-off, the control signals will continue to be transmitted since the copper wire inside the sheathed steel or high-strength wires will not be damaged.
  • a high-strength, non-extensible conductive wire comprising a core, said core comprising a good conductor of electricity and an insulating layer surrounding said good conductor; a helically wound sheath surrounding said core comprising a bundle of high-strength conductive metallic wires each of said wires having a textile yarn helically wound thereon; and a protective covering comprising at least one coating layer surrounding the sheath.
  • the conductive wire of claim 1 wherein said protective covering comprises at least two thin coatings with the outermost coating comprising a heat-sealing composition selected from the group consisting of vinyl polymers and vinyl copolymers.
  • the conductive wire of claim 4 wherein said protective covering comprises at least two thin coatings with the outermost coating comprising a heat-sealing composition selected from the group consisting of vinyl polymers and vinyl copolymers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Insulated Conductors (AREA)
  • Ropes Or Cables (AREA)
US78392A 1969-10-09 1970-10-06 High-strength non-extensible conductive wire Expired - Lifetime US3665095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6934885A FR2064673A5 (enrdf_load_stackoverflow) 1969-10-09 1969-10-09

Publications (1)

Publication Number Publication Date
US3665095A true US3665095A (en) 1972-05-23

Family

ID=9041407

Family Applications (1)

Application Number Title Priority Date Filing Date
US78392A Expired - Lifetime US3665095A (en) 1969-10-09 1970-10-06 High-strength non-extensible conductive wire

Country Status (9)

Country Link
US (1) US3665095A (enrdf_load_stackoverflow)
JP (1) JPS5036024B1 (enrdf_load_stackoverflow)
BE (1) BE755467A (enrdf_load_stackoverflow)
CH (1) CH531241A (enrdf_load_stackoverflow)
DE (1) DE2049232A1 (enrdf_load_stackoverflow)
FR (1) FR2064673A5 (enrdf_load_stackoverflow)
GB (1) GB1301689A (enrdf_load_stackoverflow)
NL (1) NL7014249A (enrdf_load_stackoverflow)
SE (1) SE376678B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320969A1 (fr) * 1975-08-13 1977-03-11 Exxon Research Engineering Co Composition thermoplastique elastomere amelioree
US5558794A (en) * 1991-08-02 1996-09-24 Jansens; Peter J. Coaxial heating cable with ground shield
US20060204752A1 (en) * 2005-03-04 2006-09-14 Corocord Raumnetz Gmbh Multi-strand steel cable

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3317262A1 (de) * 1983-05-11 1984-11-15 Heermann GmbH, 5800 Hagen Biegsames elektrisches kabel fuer die signaluebertragung auf sich bewegende koerper, verfahren zu seiner herstellung und vorrichtung zur durchfuehrung des verfahrens
JPS61108620U (enrdf_load_stackoverflow) * 1984-12-21 1986-07-10
CN113488225A (zh) * 2021-06-16 2021-10-08 上海申茂电磁线有限公司 一种绕包漆包线

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183301A (en) * 1961-04-05 1965-05-11 Telefiex Inc Flexible push-pull cable

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320969A1 (fr) * 1975-08-13 1977-03-11 Exxon Research Engineering Co Composition thermoplastique elastomere amelioree
US5558794A (en) * 1991-08-02 1996-09-24 Jansens; Peter J. Coaxial heating cable with ground shield
US20060204752A1 (en) * 2005-03-04 2006-09-14 Corocord Raumnetz Gmbh Multi-strand steel cable
US7230180B2 (en) * 2005-03-04 2007-06-12 Concord Raumnetz Gmbh Multi-strand steel cable

Also Published As

Publication number Publication date
GB1301689A (enrdf_load_stackoverflow) 1973-01-04
DE2049232A1 (de) 1971-04-22
NL7014249A (enrdf_load_stackoverflow) 1971-04-14
JPS5036024B1 (enrdf_load_stackoverflow) 1975-11-20
FR2064673A5 (enrdf_load_stackoverflow) 1971-07-23
BE755467A (fr) 1971-02-01
CH531241A (fr) 1972-11-30
SE376678B (enrdf_load_stackoverflow) 1975-06-02

Similar Documents

Publication Publication Date Title
US3676576A (en) Multiconductor stranded remote-control cable
US4440974A (en) Electromechanical cable for withstanding high temperatures and pressures, and method of manufacture
US4606604A (en) Optical fiber submarine cable and method of making
US4259544A (en) Electric cable with a longitudinal strength member
US3644866A (en) Tightly bound bundle of filaments and method of producing same
CN206849519U (zh) 包覆电线以及车辆用的多芯线缆
US3115542A (en) Submarine electric cables
US4081602A (en) Self-supporting cable
US5230033A (en) Subminiature fiber optic submarine cable and method of making
US20190228874A1 (en) Coated wire and multicore cable
US20020046871A1 (en) Insulated electrical conductor with preserved functionality in case of fire
US5397860A (en) Multiple-core electrical ignition system cable
US3665095A (en) High-strength non-extensible conductive wire
US4243445A (en) Method for making a remote control cable
US4443658A (en) Remote control cable for transmitting electrical signals and process and apparatus for production thereof
GB2069746A (en) Communications cables
JPH08180741A (ja) 車輪速センサ用信号ケーブル
US3607490A (en) Method of making a flexible signal transmission cable for an aerodynamic body
WO2006005426A1 (en) Fire resistant wire and cable constructions
US2787653A (en) Electric cables
CN218069390U (zh) 抗拉伸型4芯低压耐火电缆
CN112489855B (zh) 一种新型超柔阻燃的编织纱线及其制作方法
CN110349704B (zh) 一种高强度系留电缆及其制备方法
US3472947A (en) Nonextensible multiconductor cable
CN208284255U (zh) 一种适用于动态环境的柔性复合线缆结构