US2540164A - High-frequency coaxial cable having a double layer inner conductor - Google Patents

High-frequency coaxial cable having a double layer inner conductor Download PDF

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Publication number
US2540164A
US2540164A US706212A US70621246A US2540164A US 2540164 A US2540164 A US 2540164A US 706212 A US706212 A US 706212A US 70621246 A US70621246 A US 70621246A US 2540164 A US2540164 A US 2540164A
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US
United States
Prior art keywords
tapes
conductor
core
conductive layer
tape
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
US706212A
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English (en)
Inventor
Dean John Norman
Smith Esmond Wassell
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.)
Telegraph Construction and Maintenance Co Ltd
Original Assignee
Telegraph Construction and Maintenance Co Ltd
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 Telegraph Construction and Maintenance Co Ltd filed Critical Telegraph Construction and Maintenance Co Ltd
Application granted granted Critical
Publication of US2540164A publication Critical patent/US2540164A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01B11/1804—Construction of the space inside the hollow inner conductor

Definitions

  • Fig. 1 is a view, partly in section, showing a large size high frequency coaxial cable (with the outer conductor, serving and armouring omitted) embodying a central conductor according to the invention.
  • roller of each pair is preferably carried on a fixed pivot whilst the other is spring-loaded and capable of being moved toward or away from the core to allow adjustment.
  • Means may be provided for driving one or more of the rollers, but usually it will be found sufilcient to rely on the rotating effect of the forwardly moving core.
  • the crimping may be carried out as an entirely separate operation or in the shaping operation during the passage of the tapes towards the point of application to the core.
  • the crimps or indentations may project outwardly instead of inwardly as described above.
  • the tapes may with advantage be annealed prior to being longitudinally folded or shaped to the circular heart.
  • the outer conductor of the cable may be of conventional construction or may be formed of a tape or tapes preferably having a long lay as described with reference to the inner conductor.
  • the outer conductor l0 may likewise be crimped transversely at intervals 8' in one of the manners above described, and may likewise be preformed as described.
  • thermoplastic, flexible, water-resisting insulating material e. g. orientated polystyrene, or mixtures of this substance with polyisobutylene, or mixtures of polythene with polyisobutylene or similar known components.
  • a high frequency coaxial cable the combination of a non-conductive supporting core; a conductor surrounding said core and comprising a first conductive layer formed by conductive metal tapes arranged in edge-to-edge contact and applied to the core with a relatively long lay, and a second conductive layer consisting of a single metal tape applied longitudinally over and enwrapping the tapes of said first conductive layer with the edges of said single metal tape being substantially parallel to the axis of the cable; a binder of dielectric material helically applied over the second conductive layer tape; and an outer insulating envelope composed of dielectric of the same composition as that used for the binder.
  • a non-conductive supporting core which comprises mainly polythene
  • a first conductive layer formed of a plurality of conductive metal tapes enwrapp and extending longitudinally of the core
  • a second conductive layer comprising a metal tape applied longitudinally over and enwrapping said tapes, the edges of said metal tape of said second conductive layer being substantially parallel to the axis of the cable
  • a helically applied binder of dielectric material for holding the tapes to the core
  • an outer conductor and an outer insulating envelope composed of dielectric of the same composition as that used for the binder.
  • a non-conductive supporting core which comprises mainly polythene
  • a first conductive layer formed of a plurality of conductive metal tapes enwrapping and extending longitudinally of the core
  • a second conductive layer comprising a metal tape applied longitudinally over and enwrapping said tapes, the edges of said metal tape of said second conductive layer being substantially parallel to the axis of the cable
  • a binder consisting of a comparatively narrow thread of dielectric material applied as an open helix for holding the tapes to the core, an outer conductor, and an outer insulating envelope composed of dielectric of the same composition as that used for the binder.
  • first conductive layer formed by conductive metal tapes arranged in edge to edge contact and applied to the core with a relatively long lay
  • a second conductive layer consisting of a single metal tape applied longitudinally over and enwrapping said tapes of said first conductive layer with the edges of said single metal tape being substantially parallel to the axis of the cable
  • a binder of dielectric material helically applied over said second conductive layer
  • an outer insulating envelope composed of dielectric of the same composition as that used for the binder, but having a lower melting point than the dielectric used for the binder.
  • a structure including an outer conductor composed of a conductive tape means applied over the dielectric envelope with a long lay, and a pair of superimposed helically applied metallic binder tapes binding said outer conductor tape means in position, the turns of each 7 helix breaking joint and those of the upper helix covering the gaps between the turns of the lower Number henx- 1,944,004 JOHN NORMAN DEAN. 2,153,174 ESMOND WASSELL SMITH. 2,204,737 2,223,116

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  • Communication Cables (AREA)
US706212A 1945-11-01 1946-10-28 High-frequency coaxial cable having a double layer inner conductor Expired - Lifetime US2540164A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2540164X 1945-11-01

Publications (1)

Publication Number Publication Date
US2540164A true US2540164A (en) 1951-02-06

Family

ID=10909555

Family Applications (1)

Application Number Title Priority Date Filing Date
US706212A Expired - Lifetime US2540164A (en) 1945-11-01 1946-10-28 High-frequency coaxial cable having a double layer inner conductor

Country Status (3)

Country Link
US (1) US2540164A (fr)
BE (1) BE469255A (fr)
FR (1) FR937116A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968691A (en) * 1957-04-09 1961-01-17 Earl L Canfield Electrical conductors and connectors therefor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944004A (en) * 1932-03-16 1934-01-16 Habirshaw Cable And Wire Corp Electric cable
GB485400A (en) * 1935-12-13 1938-05-19 Siemens Ag Improvements in and relating to air-space-insulated high frequency electric cables
FR834165A (fr) * 1937-03-08 1938-11-15 Siemens Ag Ligne concentrique à haute fréquence à conducteur intérieur tubulaire
US2153174A (en) * 1936-02-22 1939-04-04 Electric & Musieal Ind Ltd Electric cable
US2204737A (en) * 1937-10-14 1940-06-18 Ici Ltd Manufacture of electric cables
US2223116A (en) * 1937-01-23 1940-11-26 Felten & Guilleaume Cariswerk Tubular conductor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944004A (en) * 1932-03-16 1934-01-16 Habirshaw Cable And Wire Corp Electric cable
GB485400A (en) * 1935-12-13 1938-05-19 Siemens Ag Improvements in and relating to air-space-insulated high frequency electric cables
US2153174A (en) * 1936-02-22 1939-04-04 Electric & Musieal Ind Ltd Electric cable
US2223116A (en) * 1937-01-23 1940-11-26 Felten & Guilleaume Cariswerk Tubular conductor
FR834165A (fr) * 1937-03-08 1938-11-15 Siemens Ag Ligne concentrique à haute fréquence à conducteur intérieur tubulaire
US2204737A (en) * 1937-10-14 1940-06-18 Ici Ltd Manufacture of electric cables

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968691A (en) * 1957-04-09 1961-01-17 Earl L Canfield Electrical conductors and connectors therefor

Also Published As

Publication number Publication date
FR937116A (fr) 1948-08-09
BE469255A (fr)

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