Composite cable including portions having controlled flexural rigidities
First Claim
1. A composite communications cable, which comprises:
- a core which includes at least one communication transmission medium, each said transmission medium in said core being enclosed in an enclosing covering material; and
a sheath system which encloses said core and which has a longitudinal axis, said core having a cross section transverse to the longitudinal axis;
wherein said cross section of the core is divided into two portions with the flexural rigidity of each portion in compression being equal to the flexural rigidity of the other portion in tension and the flexural rigidity of the one portion and of the other portion being predetermined in a manner to cause the neutral axis of bending in said cross section to be disposed in a desired location so that each said transmission medium experiences minimal stress.
3 Assignments
0 Petitions
Accused Products
Abstract
A hybrid optical fiber, copper conductor transmission media cable (20) which is suitable for use in local area network application includes a core (22) comprising two arrays (25,40) of longitudinally extending portions. One array (25) includes optical fibers disposed between two strength members (27--27) whereas the other array comprises metallic conductors (42--42). Each array includes a matrix material (30,45) in which the longitudinally extending portions are enclosed with adjacent portions being connected by a web (32,47). The two arrays are enclosed by a jacket (50) which has an oval shaped configuration. The configuration of component portions of the cable as well as the materials thereof are determined to cause the neutral axis of bending to be in a desired location which minimizes losses in the transmission media.
146 Citations
21 Claims
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1. A composite communications cable, which comprises:
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a core which includes at least one communication transmission medium, each said transmission medium in said core being enclosed in an enclosing covering material; and a sheath system which encloses said core and which has a longitudinal axis, said core having a cross section transverse to the longitudinal axis; wherein said cross section of the core is divided into two portions with the flexural rigidity of each portion in compression being equal to the flexural rigidity of the other portion in tension and the flexural rigidity of the one portion and of the other portion being predetermined in a manner to cause the neutral axis of bending in said cross section to be disposed in a desired location so that each said transmission medium experiences minimal stress. - View Dependent Claims (2, 3)
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4. A hybrid optical fiber, metallic conductor cable, said hybrid cable comprising:
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a core which comprises; a first planar array which comprises longitudinally extending portions with outer portions of the array comprising strength members and inner portions of the array disposed between said strength members being optical fibers; and a second array which comprises longitudinally extending metallic conductors; and a jacket which encloses said first and second arrays, said jacket being made of a plastic material; said cable having a neutral axis of bending which is disposed in a desired location. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification