GB693460A - Improvements in protective coverings for electric cables, pipes and the like - Google Patents
Improvements in protective coverings for electric cables, pipes and the likeInfo
- Publication number
- GB693460A GB693460A GB4039/51A GB403951A GB693460A GB 693460 A GB693460 A GB 693460A GB 4039/51 A GB4039/51 A GB 4039/51A GB 403951 A GB403951 A GB 403951A GB 693460 A GB693460 A GB 693460A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rubber
- layer
- tape
- layers
- lappings
- 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
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
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Organic Insulating Materials (AREA)
- Manufacturing Of Electric Cables (AREA)
Abstract
693,460. Cables. BRITISH INSULATED CALLENDER'S CABLES, Ltd. Feb. 18, 1952 [Feb. 19, 1951], No. 4039/51. Drawings to Specification. Class 36. [Also in Groups XVIII and XXVIII] A metal-sheathed cable has a protective cover comprising a continuous layer of rubber sandwiched between two relatively thin helical lappings of moisture-impervious material of which the modulus of elasticity is high as compared with unvulcanized rubber. The covering is applied to the cable sheath in the form of two relatively staggered helical lappings of tapes, each tape comprising a layer of unvulcanized rubber and a carrier layer of moisture-impermeable material such as polyvinyl chloride or polyethylene. The lappings are applied so that the two rubber layers are in contact. The rubber is vulcanized after application of the tapes to the cable, and this may be effected by omitting an essential vulcanizing ingredient, e.g. an ultra-rapid accelerator, from the rubber layer of one tape, and another essential vulcanizing ingredient, e.g. sulphur, from the rubber layer of the other tape. When the two layers of rubber come into contact migration of these essential ingredients takes place, and with it vulcanization of the two layers, as described in Specification 691,618.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4039/51A GB693460A (en) | 1951-02-19 | 1951-02-19 | Improvements in protective coverings for electric cables, pipes and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4039/51A GB693460A (en) | 1951-02-19 | 1951-02-19 | Improvements in protective coverings for electric cables, pipes and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB693460A true GB693460A (en) | 1953-07-01 |
Family
ID=9769581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4039/51A Expired GB693460A (en) | 1951-02-19 | 1951-02-19 | Improvements in protective coverings for electric cables, pipes and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB693460A (en) |
-
1951
- 1951-02-19 GB GB4039/51A patent/GB693460A/en not_active Expired
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