GB559245A - Shielding for communication cables - Google Patents

Shielding for communication cables

Info

Publication number
GB559245A
GB559245A GB11056/42A GB1105642A GB559245A GB 559245 A GB559245 A GB 559245A GB 11056/42 A GB11056/42 A GB 11056/42A GB 1105642 A GB1105642 A GB 1105642A GB 559245 A GB559245 A GB 559245A
Authority
GB
United Kingdom
Prior art keywords
conductor
tapes
cable
copper
iron
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
Application number
GB11056/42A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB559245A publication Critical patent/GB559245A/en
Expired legal-status Critical Current

Links

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
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Communication Cables (AREA)
  • Insulated Conductors (AREA)

Abstract

559,245. Electric cables. STANDARD TELEPHONES & CABLES, Ltd. Aug. 7, 1942, No. 11056. Convention date, Oct. 30, 1941. [Class 36] A high-frequency multicircuit communication cable has a highly conductive copper screen positioned lengthwise of the cable and a magnetic layer of iron tape transverse to the cable, the magnetic flux due to currents in the copper screen being nearly at right-angles to the axis of the cable. The screen consists of one or two copper tapes Cu, Fig. 1, parallel with the axis of the conductor A with overlapping edges. The tapes may be transversely corrugated before application and are enclosed by iron or iron alloy tapes Fe wound with a small pitch and a small spacing in the same or opposite directions. When an outer tubular conductor B is provided, the iron layer is enclosed by a second copper layer Cu and the conductor B may have a similar shield to the conductor A. The lead sheath S may have metallic or fibrous armouring, and paper layers may be provided adjacent each conductor. In a modification, Fig. 3, the copper layer consists of a pair of oppositely wound overlapping tapes of equal or unequal pitch. Specification 351,491 and U.S.A. Specification 1,933,261 are referred to.
GB11056/42A 1941-10-30 1942-08-07 Shielding for communication cables Expired GB559245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US417183A US2319744A (en) 1941-10-30 1941-10-30 Shielding for communication circuits

Publications (1)

Publication Number Publication Date
GB559245A true GB559245A (en) 1944-02-10

Family

ID=23652914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11056/42A Expired GB559245A (en) 1941-10-30 1942-08-07 Shielding for communication cables

Country Status (5)

Country Link
US (1) US2319744A (en)
BE (1) BE477721A (en)
CH (1) CH266210A (en)
FR (1) FR956024A (en)
GB (1) GB559245A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623093A (en) * 1948-05-07 1952-12-23 Canada Wire & Cable Co Ltd Electrical communication cable
GB2128802A (en) * 1982-10-14 1984-05-02 Atomic Energy Authority Uk Cables for use in a hostile environment

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479924A (en) * 1944-04-25 1949-08-23 Western Electric Co Method of making electrical conductor cables
BE472664A (en) * 1945-05-10
US2515333A (en) * 1946-04-02 1950-07-18 Philco Corp Coil shielding means
US2526942A (en) * 1946-04-15 1950-10-24 Telecommunications Sa Process for reducing the far-end crosstalk between concentric pairs due to tertiary circuits
US2711439A (en) * 1948-04-13 1955-06-21 Canada Wire & Cable Company Lt Electric cables
DE1037539B (en) * 1954-09-15 1958-08-28 Siemens Ag Telecommunication cable with coaxial and unshielded symmetrical lines for carrier frequency transmission
DE1086771B (en) * 1955-07-07 1960-08-11 Siemens Ag High-frequency cables with coaxial lines and unshielded symmetrical carrier frequency lines
GB8601270D0 (en) * 1986-01-20 1986-02-26 Raychem Ltd High frequency attenuation cable
US4757297A (en) * 1986-11-18 1988-07-12 Cooper Industries, Inc. Cable with high frequency suppresion
FR2761514B1 (en) * 1997-03-27 1999-04-30 Alsthom Cge Alcatel CONDUCTOR CABLE PROTECTED BY A TAPE SCREEN
TWI773440B (en) * 2021-07-15 2022-08-01 柯遵毅 Cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623093A (en) * 1948-05-07 1952-12-23 Canada Wire & Cable Co Ltd Electrical communication cable
GB2128802A (en) * 1982-10-14 1984-05-02 Atomic Energy Authority Uk Cables for use in a hostile environment

Also Published As

Publication number Publication date
BE477721A (en)
US2319744A (en) 1943-05-18
FR956024A (en) 1950-01-23
CH266210A (en) 1950-01-15

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