GB1448819A - Screened and other co-axial and high frequency cables - Google Patents
Screened and other co-axial and high frequency cablesInfo
- Publication number
- GB1448819A GB1448819A GB4793972A GB4793972A GB1448819A GB 1448819 A GB1448819 A GB 1448819A GB 4793972 A GB4793972 A GB 4793972A GB 4793972 A GB4793972 A GB 4793972A GB 1448819 A GB1448819 A GB 1448819A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tape
- cable
- die
- screened
- metal
- 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
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
-
- 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
- H01B11/1025—Screens specially adapted for reducing interference from external sources composed of a helicoidally wound tape-conductor
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electric Cables (AREA)
- Insulated Conductors (AREA)
Abstract
1448819 Screened cable UNITED KING- DOM ATOMIC ENERGY AUTHORITY 22 Oct 1973 [18 Oct 1972] 47939/72 Heading H1A A screened high-frequency cable comprises a braided wire shield 3 and a magnetic tape 20 of, for example, Mu-metal (Registered Trade Mark) 0À002 inches in thickness wound in a manner which does not result in an increase in diameter at the overlap 21. When the Mu-metal tape is used it should have previously been annealed to allow it to stretch by more than 10% without fracture. The cable may be completed by a further metal braided shield and an outer jacket, or the further metal braided shield may be followed by a second magnetic tape and a third metal braided shield. A process for applying the magnetic tape comprises advancing the cable through a rotating tubular die 1b while the tape 5 is led from spool 4 over guide rod 9, angularly adjusted for minimum friction to enter a slot (1c, Fig. 2, not shown) in the die, substantially tangential to the die bore, along one side face. The guide rod 9 is carried by arm 8 which is fixed to the die. The rate of advance of the cable is adjusted so that the tape is applied with an overlap 25% for example, and the tension on the tape is adjustable by the device comprising a spring 6 and nut 7 on a screw threaded part of die portion 1a. As the upper lap of tape engages the lower the lower layer is compressed radially inwards to a greater extent than the upper lap is stretched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4793972A GB1448819A (en) | 1972-10-18 | 1972-10-18 | Screened and other co-axial and high frequency cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4793972A GB1448819A (en) | 1972-10-18 | 1972-10-18 | Screened and other co-axial and high frequency cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1448819A true GB1448819A (en) | 1976-09-08 |
Family
ID=10446796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4793972A Expired GB1448819A (en) | 1972-10-18 | 1972-10-18 | Screened and other co-axial and high frequency cables |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1448819A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659871A (en) * | 1982-10-01 | 1987-04-21 | Raychem Limited | Cable with flame retarded cladding |
| DE102017220919A1 (en) * | 2017-11-23 | 2019-05-23 | Leoni Kabel Gmbh | A method of producing a self-closing film coating in a cable assembly, cable assembly having such a film coating and molding tool for producing such a film coating |
-
1972
- 1972-10-18 GB GB4793972A patent/GB1448819A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659871A (en) * | 1982-10-01 | 1987-04-21 | Raychem Limited | Cable with flame retarded cladding |
| DE102017220919A1 (en) * | 2017-11-23 | 2019-05-23 | Leoni Kabel Gmbh | A method of producing a self-closing film coating in a cable assembly, cable assembly having such a film coating and molding tool for producing such a film coating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19931021 |