Combined electrical power and optical fiber cable
First Claim
1. A cable for conveying electric power and for transmitting optical signals which comprises at least an electric conductor, insulation surrounding the conductor, a metal sheath around said insulation and a protective layer around said metal sheath, the improvement comprising at least one duct within said protective layer and extending longitudinally of said cable and at least one optical fiber within said duct.
9 Assignments
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Accused Products
Abstract
A cable for conveying both electrical power and optical signals, the cable having an electric conductor with insulation therearound, a sheath around the insulation, a one or two part protective layer around the insulation, a tube within the protective layer and at least one optical fiber loosely received in the tube. The protective layer can have armoring therearound and in this case, the radial thickness of the protective layer is from two to four times the diameter of the tube.
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Citations
20 Claims
- 1. A cable for conveying electric power and for transmitting optical signals which comprises at least an electric conductor, insulation surrounding the conductor, a metal sheath around said insulation and a protective layer around said metal sheath, the improvement comprising at least one duct within said protective layer and extending longitudinally of said cable and at least one optical fiber within said duct.
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7. A cable for conveying electric power and for transmitting optical signals which comprises at least an electric conductor, insulation surrounding the conductor, a sheath around said insulation, a protective layer around said sheath, said protective layer comprising a radially innermost winding of plastic tape and a radially outermost layer of extruded polymeric material, at least one duct within said winding of plastic tape and extending longitudinally of said cable and at least one optical fiber within said duct.
- 8. A cable for conveying electric power and for transmitting optical signals which comprises at least one electrical conductor, insulation surrounding the conductor, a sheath around said insulation, a protective layer around said sheath, said protective layer comprising a radially inner layer of extruded polymeric material and a radially outer winding of protective material, at least one duct extending longitudinally of said cable and disposed in said radially inner layer, at least one optical fiber within said duct, and an external armour around said protective layer.
- 12. A cable for conveying electric power and for transmitting optical signals which comprises at least one electrical conductor, insulation surrounding the conductor, a sheath around said insulation, a protective layer around said sheath, said protective layer comprising a radially inner layer of extruded polymeric material and a radially outer layer of a winding of a protective material, at least one duct extending longitudinally of said cable and disposed in said radially outer layer, at least one optical fiber within said duct, and an external armour around said protective layer.
Specification