GB1592192A - Electric cables - Google Patents
Electric cables Download PDFInfo
- Publication number
- GB1592192A GB1592192A GB3047477A GB3047477A GB1592192A GB 1592192 A GB1592192 A GB 1592192A GB 3047477 A GB3047477 A GB 3047477A GB 3047477 A GB3047477 A GB 3047477A GB 1592192 A GB1592192 A GB 1592192A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coaxial cable
- optical
- inner conductor
- tape
- bore
- 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
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4403—Optical cables with ribbon structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/441—Optical cables built up from sub-bundles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Communication Cables (AREA)
Description
(54) IMPROVEMENTS IN OR RELATING TO ELECTRIC CABLES
(71) We, BICC Limited, a British Company, of 21 Bloomsbury Street, London
WC1B 3QN, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:
This invention relates to an electric cable suitable for use in the transmission both of electric energy and of light as hereinafter defined. More particularly, the invention is concerned with a coaxial cable which incorporates one or more than one optical guide for the transmission of light.
By the generic term "light" as used in this specification is meant the ultraviolet, visible and infra-red regions of the electromagnetic spectrum.
The optical guide or guides incorporated in the coaxial cable are especially, but not exclusively, for use in the communication field adapted for transmission of light having a wavelength within the range 0.8 to 1.3 micrometres.
According to the invention we provide a coaxial cable comprising inner and outer electric conductors radially spaced apart and electrically insulated from one another, wherein the inner conductor has extending throughout its length at least one bore in which at least one separate optical fibre and/or at least one optical bundle is hereinafter defined is or are loosely housed.
By the expression "optical bundle" as used in this specification is meant a group of optical fibres or a group of fibres including at least one optical fibre and at least one non-optical reinforcing fibre or other reinforcing elongate member. Each optical fibre of the optical bundle may be used independently as a separate light guide, each with its own modulated light source and detector, or a plurality of optical fibres of a bundle may be used together as a single light guide, with a single light source.
By virtue of being housed loosely in the or a bore in the inner conductor, limited relative movement between the or each separate optical fibre and/or between the or each optical bundle and the inner conductor can take place when the cable is flexed.
The or each separate optical fibre and/or optical bundle may be of a length substantially greater than that of the bore of the inner conductor but preferably the or each separate optical fibre and/or optical bundle and the bore in which it is loosely housed are of equal or approximately equal lengths.
The interstices between the separate optical fibre or fibres and/or the optical bundle or bundles and the wall of the bore may be filled throughout the length of the inner conductor with a greasy water-impermeable medium. A preferred water-impermeable medium consists of, or comprises as a major constituent, petroleum jelly.
In an alternative embodiment, an elongate body of rubber or plastics material having a bore extending along its length may be loosely housed in the bore of the inner conductor, the or each separate optical fibre and/or bundle being loosely housed in the bore of the elongate body.
Where the coaxial cable incorporates two or more separate optical fibres and/or optical bundles, the separate optical fibres and/or optical bundles may be secured side by side on or within at least one substantially flat flexible support member which is housed loosely in the bore or in at least one of the bores in the inner conductor.
Since the substantially flat flexible support member on or within which the or each separate optical fibre and/or optical bundle is secured is loosely housed in the or a bore of the inner conductor, limited relative movement between the flexible support member and the inner conductor - and hence between the or each separate optical fibre and/or the or each optical bundle and the inner conductor - can take place when the cable is flexed.
By virtue of the fact that the position of each separate optical fibre and/or each optical bundle secured on or within the flexible support member with respect to the other separate optical fibre or fibres and/or other optical bundle or bundles is constant throughout the length of the cable, any separate optical fibre and/or optical bundle can be readily identified at any transverse cross-section of the cable. Furthermore, since each separate optical fibre and/or optical bundle is secured on or within a flexible support member, feeding of the optical fibres and/or optical bundles into the bore or bores of the inner conductor during manufacture of the cable, and especially when initially introducing the optical fibres and/or optical bundles into the bore or bores, is facilitated.
Preferably the substantially flat flexible support member is in the form of at least one tape, for instance of paper or plastics material, of glass or of metal or metal alloy in some circumstances, it is preferred that the or each tape is of a material having a coefficient of thermal expansion approximating to that of the material or materials of the optical fibres. For example, where the optical fibres are of a silica-based material, the or each tape may be of steel.
Where the flexible support member consists of a single tape, the separate optical fibres and/or optical bundles may be secured by adhesive to one surface of the tape; viewed in transverse cross-section the tape may be corrugated so that it has a plurality of troughs extending along its length, in each of some or all of which a separate optical fibre or optical bundle may be secured. Where the flexible support member consists of two tapes, one overlying the other, the separate optical fibres and/or optical bundles may be sandwiched between the two tapes and secured by adhesive to the adjacent surfaces of the tapes; one or each of these two tapes may be transversely corrugated as described above. Where one or each of two tapes is transversely corrugated, the two tapes may be so bonded together that the optical bundles and/or separate optical fibres are secured within the flexible support member so formed but are capable of limited movement within the troughs in which they lie. Where the separate optical fibres and/or optical bundles are secured within a flexible support member, the member may comprise a single tape of plastics material with the separate optical fibres and/or optical bundles wholly or partially embedded in it.
As a means of initially identifying any separate optical fibre and/or optical bundle secured side-by-side on or within at least one substantially flat flexible support member, the support member may carry a longitudinally extending datum mark on its surface and/or at least one of the optical fibres and/or optical bundles may be assymmetrically positioned with respect to the.or each other optical fibre and/or optical bundle so that it constitutes a longitudinally extending datum.
Although the invention does not exclude a coaxial cable designed for use as a power cable, the invention is especially, but exclusively, directed to coaxial cables for use in the communication field. The inner conductor may take any convenient form appropriate to the use to which the coaxial cable is to be applied. For example, it may be an extruded elongate body of metal or metal alloy having one or more than one longitudinally extending bore or it may comprise a plurality of elongate elements of metal or metal alloy, each having a transverse crosssection approximating to a sector of an annulus, laid up helically together to form a hollow conductor but, preferably, the inner conductor comprises a longitudinally extending tape of metal or metal alloy which has been transversely folded so that its longitudinally extending edges abut or overlap and are secured together to form a tube.
The outer conductor may also take any convenient form depending upon whether the coaxial cable is to be used for the transmission of electrical power or for communication purposes. Preferably, the outer conductor comprises a longitudinally extending tape of metal or metal alloy which has been transversely folded with its longitudinally extending edges secured together. In this case, that surface of the tape which is outermost preferably carries a layer of plastics material to which an outer protective sheath may be bonded and which, when as is preferred the longitudinally extending edges of the tape overlap, serves to secure these edges together thereby to form a fluid-tight barrier. Alternatively, the outer conductor may be formed of a wire braid.
When the coaxial cable is to be employed in a communication system as a stationary elongate element for transmitting high frequency signals to, or receiving high frequency signals from, a receiving or transmitting device carried by a mobile body, for instance a vehicle or person, the outer conductor may surround a major part, but not the whole, of the periphery of the inner conductor to leave a longitudinally extending gap in the outer conductor throughout its length through which signals can be received by or transmitted from the cable, or the outer conductor may have extending longitudinally throughout substantially the whole of its length at least one row of apertures, each aperture being of a shape and size and the mutual spacing between adjacent apertures being such that high frequency signals can be received by or transmitted from the cable.
The inner and outer conductors may be radially spaced and electrically insulated from one another in any convenient manner. For example, the outer conductor may be spaced from the inner conductor by an extruded body of cellular or non-cellular plastics material which surrounds the inner conductor, or by longitudinally spaced discs or other separately formed separating devices, or by at least one elongate spacing member which extends helically around or substantially parallel to the inner conductor.
The outer conductor will usually be surrounded by an outer protective sheath, for instance an extruded sheath of rubber or plastics material, and/or other protective covering layer, for instance a layer of armouring wires or tapes. If desired elongate reinforcing members may be embedded in the sheath at circumferentially spaced positions and may extend substantially lengthwise of the sheath. Some or all of the reinforcing members may each have, in the member, undulations, preferably radially extending undulations, that serve to improve the mechanical bonding of the reinforcing member within the sheath and the flexibility of the cable.
The coaxial cable is hereinbefore described may itself constitute a component element of a multi-element cable.
The invention is further illustrated by a description, by way of example, of a preferred coaxial cable incorporating a plurality of separate optical fibres and of six forms of optical fibre element for use in a coaxial cable according to the present invention with reference to the accompanying drawings, in which:
Figure 1 is a transverse cross-sectional view of the preferred coaxial cable, and
Figures 2 to 7 are transverse crosssectional views of the six forms of optical fibre element, drawn on a greatly enlarged scale.
Referring to Figure 1, the coaxial cable comprises an inner conductor 3 and an outer conductor 5 radially spaced apart and electrically insulated from one another by a plurality of discs 4 of plastics insulating material mutually spaced along the length of the cable. The inner conductor 3 comprises a longitudinally extending, transversely folded tape of copper whose longitudinal edges abut and are welded together to define a bore 2 in which are loosely housed two separate optical fibres 1. The outer conductor 5 comprises a longitudinally extending, transversely folded tape of copper having on its outwardly facing surface a coating 6 of polyethylene to which an extruded sheath 7 of polyethylene is bonded.
The inner conductor 3 has an external diameter of 2.6 mm and its bore 2 has a diameter of 2.1 mm; each optical fibre 1 has a diameter of 130 llm. The outer conductor 5 has an external diameter of 10.0 mm. The coaxial cable has an overall diameter of 14.0mm.
The optical fibres 1 of the coaxial cable shown in Figure 1 may be replaced by any of the optical fibre elements shown in Figures 2 to 7, the optical fibre elements being drawn on a greatly enlarged scale to clarify their structure. The optical fibre element shown in Figure 2 comprises a flexible tape 12 of plastics material which has secured by adhesive to one of its major surfaces four optical fibres 11 which are spaced apart and extend substantially parallel to the axis of the tape.
In the optical fibre element shown in Figure 3, four optical fibres 21 are sandwiched between and secured by adhesive to the adjacent surfaces of two flexible tapes 22, 23 of plastics material. The tape 23 has a longitudinally extending rib 27 to provide for ready identification of any optical fibre 21. The optical fibre element shown in
Figure 4 comprises a flexible plastics tape 32 which, viewed in transverse cross-section, is so corrougated that it has a plurality of troughs 34 extending along its length in each of which an optical fibre 31 is secured by adhesive. The optical fibre element shown in Figure 5 comprises a corrugated flexible plastics tape 42 which has a plurality of troughs 44 extending along its length, the troughs being closed by a flat plastics tape 43 which is bonded to the peaks 45. Optical fibres 41 are secured by adhesive in the troughs 44. In the optical fibre element shown in Figure 6, optical fibres 51 are sandwiched between, and secured by adhesive in the troughs 54, 58 of, two flexible corrugated plastics tapes 52, 53 whose peaks 55, 59 are secured together by adhesive. To provide for ready identification of any optical fibre 51, the tape 53 has a longitudinally extending rib 57. The optical fibre element shown in Figure 7 comprises a plastics tape 62 in which four optical fibres 61 extending side-by-side are wholly embedded. The tape 62 has a longitudinally extending rib 67 to provide for ready identification of any optical fibre 61.
In the Complete Specification of our co-pending Patent Application No 23107/77 (Serial No 1592191) there is described and claimed an optical cable comprising a bare flexible elongate member of metal or metal alloy having at least one bore extending throughout its length and, loosely housed in the bore or in at least one of the bores of and unsupported with respect to the elongate member, at least one separate optical fibre and/or at least one optical bundle.
WHAT WE CLAIM IS:
1. A coaxial cable comprising inner and outer electric conductors radially spaced apart and electrically insulated from one another, wherein the inner conductor has extending throughout its length at least one bore in which at least one separate optical fibre and/or at least one optical bundle is or are loosely housed.
2. A coaxial cable comprising inner and outer electric conductors radially spaced apart and electrically insulated from one another, wherein the inner conductor has extending throughout its length at least one bore in which is loosely housed at least one substantially flat flexible support member on or within which two or more separate optical fibres and/or optical bundles are secured side by side.
3. A coaxial cable as claimed in Claim 2, wherein the substantially flat flexible support member is a flexible tape to one surface of which said optical bundles and/or separate optical fibres are secured by adhesive.
4. A coaxial cable as claimed in Claim 3, wherein, viewed in transverse cross-section, the tape is corrugated so that it has a plurality of troughs extending along its length and an optical fibre or optical bundle is secured in each of some or all of said troughs.
5. A coaxial cable as claimed in Claim 2, wherein the substantially flat flexible support member is a pair of flexible tapes between which said separate optical fibres and/or optical bundles are sandwiched and to the adjacent surfaces of which the optical fibres and/or optical bundles are secured by adhesive.
6. A coaxial cable as claimed in Claim 5 wherein, viewed in transverse cross-section, one or each of said two tapes is corrugated so that it has a plurality of troughs extending along its length and an optical fibre or optical bundle is secured in each of some or all of said troughs.
7. A coaxial cable as claimed in Claim 2, wherein the substantially flat flexible support member comprises two overlying flexible tapes which are bonded together, one or each of which tapes, viewed in transverse cross-section, being so corrugated that it has a plurality of troughs extending along its length in each of some or all of which a separate optical fibre and/or optical bundle is housed and wherein the optical fibres and/or optical bundles are secured within the flexible support member but are capable of limited movement within the troughs in which they lie.
8. A coaxial cable as claimed in any one of Claims 3 to 7, wherein the or each tape is of a metal or metal alloy.
9. A coaxial cable as claimed in any one of Claims 3 to 7, wherein the or each tape is of paper or plastics material.
10. A coaxial cable as claimed in any one of Claims 3 to 7, wherein the or each tape is of a matrial having a coefficient of thermal expansion approximating to that of the material or materials of the optical fibres secured to the tape.
11. A coaxial cable as claimed in Claim 10, wherein the optical fibres are of a silica-based material and the or each tape is of steel.
12. A coaxial cable as claimed in Claim 2, wherein the substantially flat flexible support member is a flexible tape of plastics material in which said separate optical fibres and/or optical bundles are wholly or partially embedded.
13. A coaxial cable as claimed in any one of Claims 2 to 12, wherein the flexible support member carries a longitudinally extending datum mark and/or at least one of the optical fibres and/or optical bundles is assymmetrically positioned with respect to the or each other optical fibre and/or optical bundle so that it constitutes a longitudinally extending datum.
14. A coaxial cable as claimed in Claim 1, wherein an elongate body of rubber or plastics material having a bore extending along its length is loosely housed in the bore of the inner conductor, the or each separate optical fibre and/or optical bundle being loosely housed in the bore of the elongate body.
15. A coaxial cable as claimed in any one of the preceding Claims, wherein the or each separate optical fibre and/or optical bundle and the bore of the inner conductor in which it is loosely housed are of equal or approximately equal lengths.
16. A coaxial cable as claimed in any one of the preceding Claims, wherein the interstices between the separate optical fibre or fibres and/or the optical bundle or bundles and the wall of the bore are filled throughout the length of the inner conductor with a greasy water-impermeable medium.
17. A coaxial cable as claimed in Claim 16, wherein the water-impermeable medium consists of, or comprises as a major constituent, petroleum jelly.
18. A coaxial cable as claimed in any one of the preceding Claims, wherein the inner conductor comprises a longitudinally extending tape of metal or metal alloy which has been transversely folded so that its longitudinally extending edges, which abut or overlap, are secured together to form a tube.
19. A coaxial cable as claimed in any one of Claims 1 to 17, wherein the inner conductor is an extruded elongate body of metal or metal alloy having one or more
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (34)
1. A coaxial cable comprising inner and outer electric conductors radially spaced apart and electrically insulated from one another, wherein the inner conductor has extending throughout its length at least one bore in which at least one separate optical fibre and/or at least one optical bundle is or are loosely housed.
2. A coaxial cable comprising inner and outer electric conductors radially spaced apart and electrically insulated from one another, wherein the inner conductor has extending throughout its length at least one bore in which is loosely housed at least one substantially flat flexible support member on or within which two or more separate optical fibres and/or optical bundles are secured side by side.
3. A coaxial cable as claimed in Claim 2, wherein the substantially flat flexible support member is a flexible tape to one surface of which said optical bundles and/or separate optical fibres are secured by adhesive.
4. A coaxial cable as claimed in Claim 3, wherein, viewed in transverse cross-section, the tape is corrugated so that it has a plurality of troughs extending along its length and an optical fibre or optical bundle is secured in each of some or all of said troughs.
5. A coaxial cable as claimed in Claim 2, wherein the substantially flat flexible support member is a pair of flexible tapes between which said separate optical fibres and/or optical bundles are sandwiched and to the adjacent surfaces of which the optical fibres and/or optical bundles are secured by adhesive.
6. A coaxial cable as claimed in Claim 5 wherein, viewed in transverse cross-section, one or each of said two tapes is corrugated so that it has a plurality of troughs extending along its length and an optical fibre or optical bundle is secured in each of some or all of said troughs.
7. A coaxial cable as claimed in Claim 2, wherein the substantially flat flexible support member comprises two overlying flexible tapes which are bonded together, one or each of which tapes, viewed in transverse cross-section, being so corrugated that it has a plurality of troughs extending along its length in each of some or all of which a separate optical fibre and/or optical bundle is housed and wherein the optical fibres and/or optical bundles are secured within the flexible support member but are capable of limited movement within the troughs in which they lie.
8. A coaxial cable as claimed in any one of Claims 3 to 7, wherein the or each tape is of a metal or metal alloy.
9. A coaxial cable as claimed in any one of Claims 3 to 7, wherein the or each tape is of paper or plastics material.
10. A coaxial cable as claimed in any one of Claims 3 to 7, wherein the or each tape is of a matrial having a coefficient of thermal expansion approximating to that of the material or materials of the optical fibres secured to the tape.
11. A coaxial cable as claimed in Claim 10, wherein the optical fibres are of a silica-based material and the or each tape is of steel.
12. A coaxial cable as claimed in Claim 2, wherein the substantially flat flexible support member is a flexible tape of plastics material in which said separate optical fibres and/or optical bundles are wholly or partially embedded.
13. A coaxial cable as claimed in any one of Claims 2 to 12, wherein the flexible support member carries a longitudinally extending datum mark and/or at least one of the optical fibres and/or optical bundles is assymmetrically positioned with respect to the or each other optical fibre and/or optical bundle so that it constitutes a longitudinally extending datum.
14. A coaxial cable as claimed in Claim 1, wherein an elongate body of rubber or plastics material having a bore extending along its length is loosely housed in the bore of the inner conductor, the or each separate optical fibre and/or optical bundle being loosely housed in the bore of the elongate body.
15. A coaxial cable as claimed in any one of the preceding Claims, wherein the or each separate optical fibre and/or optical bundle and the bore of the inner conductor in which it is loosely housed are of equal or approximately equal lengths.
16. A coaxial cable as claimed in any one of the preceding Claims, wherein the interstices between the separate optical fibre or fibres and/or the optical bundle or bundles and the wall of the bore are filled throughout the length of the inner conductor with a greasy water-impermeable medium.
17. A coaxial cable as claimed in Claim 16, wherein the water-impermeable medium consists of, or comprises as a major constituent, petroleum jelly.
18. A coaxial cable as claimed in any one of the preceding Claims, wherein the inner conductor comprises a longitudinally extending tape of metal or metal alloy which has been transversely folded so that its longitudinally extending edges, which abut or overlap, are secured together to form a tube.
19. A coaxial cable as claimed in any one of Claims 1 to 17, wherein the inner conductor is an extruded elongate body of metal or metal alloy having one or more
than one bore.
20. A coaxial cable as claimed in any one of Claims 1 to 17, wherein the inner conductor comprises a plurality of elongate elements of metal or metal alloy, each having a transverse cross-section approximating to a sector of an annulus, laid up helically together to form a hollow conductor.
21. A coaxial cable as claimed in any one of the preceding Claims, wherein the outer conductor comprises a longitudinally extending tape of metal or metal alloy which has been transversely folded with its longitudinally extending edges secured together.
22. A coaxial cable as claimed in any one of the preceding Claims, wherein the outer conductor has extending longitudinally throughout substantially the whole of its length at least one row of apertures, each aperture being of a shape and size and the mutual spacing between adjacent apertures being such that high frequency signals can be received by or transmitted from the cable.
23. A coaxial cable as claimed in any one of Claims 1 to 20, wherein the outer conductor surrounds a major part, but not the whole, of the periphery of the inner conductor to leave a longitudinally extending gap in the outer conductor throughout its length through which signals can be received by or transmitted from the cable.
24. A coaxial cable as claimed in any one of Claims 1 to 20, wherein the outer conductor is formed of a wire braid.
25. A coaxial cable as claimed in any one of the preceding Claims, wherein the outer conductor is radially spaced from the inner conductor by an extruded body of cellular or non-cellular plastics material which surrounds the inner conductor.
26. A coaxial cable as claimed in any one Claims 1 to 24, wherein the outer conductor is radially spaced from the inner conductor by longitudinally spaced discs or other separately formed separating devices.
27. A coaxial cable as claimed in any one Claims 1 to 24, wherein the outer conductor is radially spaced from the inner conductor by at least one elongate spacing member which extends helically around or substantialy parallel to the inner conductor.
28. A coaxial cable as claimed in any one of the preceding Claims, wherein the outer conductor is surrounded by a layer of armouring wires or tapes.
29. A coaxial cable as claimed in any one of the preceding Claims, wherein the outer conductor is surrounded by an extruded sheath of rubber or plastics materials.
30. A coaxial cable as claimed in Claim 29, wherein elongate reinforcing members are embedded in the sheath at circumferentially spaced positions and extend substantially lengthwise of the sheath.
31. A coaxial cable as claimed in Claim 30, wherein some or all of the reinforcing members each has, in the member, undulations that serve to improve the mechanical bonding of the reinforcing member within the sheath and the flexibility of the cable.
32. A coaxial cable as claimed in any one of the preceding Claims, when constituting a component element of a multielement cable.
33. A coaxial cable substantially as hereinbefore described with reference to and as shown in Figure 1 of the accompanying drawings.
34. A coaxial cable having loosely housed in a bore in its inner conductor an optical fibre element substantially as hereinbefore described with reference to and as shown in any one of Figures 2 to 7 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3047477A GB1592192A (en) | 1978-05-30 | 1978-05-30 | Electric cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3047477A GB1592192A (en) | 1978-05-30 | 1978-05-30 | Electric cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1592192A true GB1592192A (en) | 1981-07-01 |
Family
ID=10308249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3047477A Expired GB1592192A (en) | 1978-05-30 | 1978-05-30 | Electric cables |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1592192A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545645A (en) * | 1982-04-09 | 1985-10-08 | Les Cables De Lyon | Connection joining the ends of two under-water optical fiber cables and a method of manufacturing same |
| US4579420A (en) * | 1983-06-16 | 1986-04-01 | Olin Corporation | Two-pole powered ruggedized optical fiber cable and method and apparatus for forming the same |
| US4652323A (en) * | 1984-01-09 | 1987-03-24 | Olin Corporation | Plasma deposition applications for communication cables |
| US4695127A (en) * | 1985-03-27 | 1987-09-22 | Cooper Industries, Inc. | Hybrid coaxial-optical cable and method of use |
| US4696541A (en) * | 1982-12-20 | 1987-09-29 | Aeg Kabel Aktiengesellschaft | Optical cable having a plurality of basic elements arranged in a common sheath |
| US4802730A (en) * | 1986-11-10 | 1989-02-07 | Olin Corporation | Optical fiber cables for motor vehicle engine compartment applications |
| GB2247340A (en) * | 1990-08-24 | 1992-02-26 | Stc Plc | Fire resistant electric or optic cable |
| GB2256499A (en) * | 1991-05-22 | 1992-12-09 | Northern Telecom Europ Ltd | Electical cable having two insulated conductors and optic fibre |
| US5327034A (en) * | 1992-07-14 | 1994-07-05 | Hydro-Quebec | Electrically motorized wheel assembly |
| US5418878A (en) * | 1994-05-09 | 1995-05-23 | Metropolitan Communication Authority, Inc. | Multi-mode communications cable having a coaxial cable with twisted electrical conductors and optical fibers |
-
1978
- 1978-05-30 GB GB3047477A patent/GB1592192A/en not_active Expired
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545645A (en) * | 1982-04-09 | 1985-10-08 | Les Cables De Lyon | Connection joining the ends of two under-water optical fiber cables and a method of manufacturing same |
| US4696541A (en) * | 1982-12-20 | 1987-09-29 | Aeg Kabel Aktiengesellschaft | Optical cable having a plurality of basic elements arranged in a common sheath |
| US4579420A (en) * | 1983-06-16 | 1986-04-01 | Olin Corporation | Two-pole powered ruggedized optical fiber cable and method and apparatus for forming the same |
| US4652323A (en) * | 1984-01-09 | 1987-03-24 | Olin Corporation | Plasma deposition applications for communication cables |
| US4695127A (en) * | 1985-03-27 | 1987-09-22 | Cooper Industries, Inc. | Hybrid coaxial-optical cable and method of use |
| US4802730A (en) * | 1986-11-10 | 1989-02-07 | Olin Corporation | Optical fiber cables for motor vehicle engine compartment applications |
| GB2247340A (en) * | 1990-08-24 | 1992-02-26 | Stc Plc | Fire resistant electric or optic cable |
| GB2247340B (en) * | 1990-08-24 | 1994-06-15 | Stc Plc | Limited fire hazard cable |
| GB2256499A (en) * | 1991-05-22 | 1992-12-09 | Northern Telecom Europ Ltd | Electical cable having two insulated conductors and optic fibre |
| GB2256499B (en) * | 1991-05-22 | 1994-08-03 | Northern Telecom Europ Ltd | Installation for supplying electrical power and optical services to a domestic or office building |
| US5327034A (en) * | 1992-07-14 | 1994-07-05 | Hydro-Quebec | Electrically motorized wheel assembly |
| US5355039A (en) * | 1992-07-14 | 1994-10-11 | Hydro-Quebec | Electrically motorized wheel assembly |
| US5438228A (en) * | 1992-07-14 | 1995-08-01 | Hydro-Quebec | Electrically motorized wheel assembly |
| US5418878A (en) * | 1994-05-09 | 1995-05-23 | Metropolitan Communication Authority, Inc. | Multi-mode communications cable having a coaxial cable with twisted electrical conductors and optical fibers |
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| GB1583276A (en) | Optical cables |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee | ||
| PCNP | Patent ceased through non-payment of renewal fee |