GB2011153A - Telecommunication cables - Google Patents

Telecommunication cables

Info

Publication number
GB2011153A
GB2011153A GB7843100A GB7843100A GB2011153A GB 2011153 A GB2011153 A GB 2011153A GB 7843100 A GB7843100 A GB 7843100A GB 7843100 A GB7843100 A GB 7843100A GB 2011153 A GB2011153 A GB 2011153A
Authority
GB
United Kingdom
Prior art keywords
polyethylene
sheath
buffer material
core
flexible sleeve
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.)
Granted
Application number
GB7843100A
Other versions
GB2011153B (en
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.)
Balfour Beatty PLC
Original Assignee
BICC 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 BICC PLC filed Critical BICC PLC
Priority to GB7843100A priority Critical patent/GB2011153B/en
Publication of GB2011153A publication Critical patent/GB2011153A/en
Application granted granted Critical
Publication of GB2011153B publication Critical patent/GB2011153B/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
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • H01B7/288—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid

Landscapes

  • Insulated Conductors (AREA)

Abstract

In a telecommunication cable of the kind comprising a core 1 including a multiplicity of polyethylene insulated conductors 2 with the interstices filled with petroleum jelly 3, and a polyethylene sheath 7, the core is enclosed in a loose fitting flexible sleeve of polyethylene or polyethylene terephthalate 4, possibly of polyethylene tape 8 which contains a buffer material 5. Preferably the buffer material fills any space between the core and sheath. The buffer material flows or is deformed within the flexible sleeve when the sheath is applied or it expands after the sheath is applied or, being hygroscopic e.g. polyacrylamide, when water penetrates the flexible sleeve. 6 is an optional conductive moisture barrier. The buffer material may be petroleum jelly or foam. <IMAGE>
GB7843100A 1977-11-03 1978-11-03 Telecommunication cables Expired GB2011153B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7843100A GB2011153B (en) 1977-11-03 1978-11-03 Telecommunication cables

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4574177 1977-11-03
GB7843100A GB2011153B (en) 1977-11-03 1978-11-03 Telecommunication cables

Publications (2)

Publication Number Publication Date
GB2011153A true GB2011153A (en) 1979-07-04
GB2011153B GB2011153B (en) 1982-05-26

Family

ID=26265654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7843100A Expired GB2011153B (en) 1977-11-03 1978-11-03 Telecommunication cables

Country Status (1)

Country Link
GB (1) GB2011153B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164198A (en) * 1984-09-05 1986-03-12 Telephone Cables Ltd Cables
EP0314371A2 (en) * 1987-10-30 1989-05-03 AT&T Corp. Water resistant communications cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164198A (en) * 1984-09-05 1986-03-12 Telephone Cables Ltd Cables
EP0314371A2 (en) * 1987-10-30 1989-05-03 AT&T Corp. Water resistant communications cable
EP0314371A3 (en) * 1987-10-30 1990-12-12 American Telephone And Telegraph Company Water resistant communications cable

Also Published As

Publication number Publication date
GB2011153B (en) 1982-05-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee