GB2011153A - Telecommunication cables - Google Patents
Telecommunication cablesInfo
- 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
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>
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)
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 |
-
1978
- 1978-11-03 GB GB7843100A patent/GB2011153B/en not_active Expired
Cited By (3)
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 |