Shielded cable and method of making same
First Claim
1. A shielded cable comprising:
- a cable core comprising a center conductor and a dielectric layer surrounding the center conductor;
a first electrically conductive shield surrounding said cable core and bonded thereto;
a second electrically conductive shield surrounding said first shield;
said first and second shields comprising bonded metal-polymer-metal laminate tapes, each extending longitudinally of the cable and having overlapping longitudinal edges;
a cable jacket surrounding said second shield and bonded thereto; and
an interstitial layer located between said first and second shields, said interstitial layer being composed of elongate strands disposed between said first and second shields so as to be freely displaceable axially while also serving to space said first and second shields apart from one another.
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Accused Products
Abstract
The present invention provides a non-braided shielded drop cable that can be easily attached to a standard connector. The cable includes a cable core including a center conductor and a dielectric layer surrounding the center conductor, a first electrically conductive shield surrounding the cable core and bonded thereto, a second electrically conductive shield surrounding the first shield, and a cable jacket surrounding the second shield and bonded thereto. An interstitial layer is located between the first and second shields and is composed of axially displaceable elongate strands and is typically composed of helically served yarns or metal wires. The present invention also includes a method of making a shielded cable.
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Citations
12 Claims
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1. A shielded cable comprising:
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a cable core comprising a center conductor and a dielectric layer surrounding the center conductor;
a first electrically conductive shield surrounding said cable core and bonded thereto;
a second electrically conductive shield surrounding said first shield;
said first and second shields comprising bonded metal-polymer-metal laminate tapes, each extending longitudinally of the cable and having overlapping longitudinal edges;
a cable jacket surrounding said second shield and bonded thereto; and
an interstitial layer located between said first and second shields, said interstitial layer being composed of elongate strands disposed between said first and second shields so as to be freely displaceable axially while also serving to space said first and second shields apart from one another. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A shielded cable comprising:
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a cable core comprising a center conductor and a dielectric layer surrounding the center conductor;
a first electrically conductive shield surrounding said cable core and bonded thereto;
a second electrically conductive shield surrounding said first shield;
a cable jacket surrounding said second shield and bonded thereto; and
an interstitial layer located between said first and second shields, said interstitial layer being formed from yarns helically arranged about the first shield so as to be freely displaceable axially while also serving to space said first and second shield apart from one another. - View Dependent Claims (8, 9, 10)
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11. A shielded cable comprising:
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a cable core comprising a center conductor and a dielectric layer surrounding the center conductor;
a first shielding tape formed of a bonded aluminum-polypropylene-aluminum laminate applied in an overlapping arrangement about said cable core and bonded thereto;
an interstitial layer surrounding said first shielding tape and comprising elongate metal wires helically arranged about said first shielding tape and covering less than 30 percent of the surface of the first shielding tape;
a second shielding tape formed of a bonded aluminum-polyester-aluminum laminate applied in overlapping arrangement about said interstitial layer; and
a cable jacket surrounding said second shielding tape and bonded thereto;
said metal wires of said interstitial layer being freely displaceable axially while also serving to space said first and second shielding tapes apart from one another.
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12. A shielded cable comprising:
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a cable core comprising a center conductor and a dielectric layer surrounding the center conductor;
a first electrically conductive shield surrounding said cable core and bonded thereto;
a second electrically conductive shield surrounding said first shield;
a cable jacket surrounding said second shield and bonded thereto; and
an interstitial layer located between said first and second shields, said interstitial layer being composed of elongate metal wires disposed between said first and second shields so as to be freely displaceable axially while also serving to space said first and second shields apart from one another, said interstitial layer including a first plurality of metal wires helically arranged about the first shield and a second plurality of metal wires helically arranged about the first plurality of metal wires and having a helical orientation opposite the orientation of the first plurality of metal wires.
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Specification