Non-round filler rods and tubes with superabsorbent water swellable material for large cables
First Claim
Patent Images
1. A filler rod for use in a fiber optic cable comprising:
- a core; and
a water swellable coating surrounding said core, wherein said core is non-round in cross-sectional shape.
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Accused Products
Abstract
A fiber optic cable having a plurality of buffer tubes and filler rods or filler tubes disposed between the inner surface of the outer jacket of the fiber optic cable and the buffer tubes. The buffer tubes contain a plurality of optical fibers. The filler rods have a non-round core surrounded by a suberabsorbant water swellable coating to provide protection for the optical fibers against the penetration of water within the cable. The filler rods and filler tubes are made of a solid or porous or foam-type material expanding in the presence of water.
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Citations
21 Claims
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1. A filler rod for use in a fiber optic cable comprising:
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a core; and
a water swellable coating surrounding said core, wherein said core is non-round in cross-sectional shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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- 9. A filler rod for use in a fiber optic cable wherein said filler rod is formed of a water swellable material having a non-round cross-sectional shape.
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12. A fiber optic cable comprising:
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an outer jacket;
a plurality of buffer tubes containing a plurality of optical fibers; and
at least one filler rod disposed between at least two of said plurality of buffer tubes and a neighboring structure, wherein said at least one filler rod comprises;
a core; and
a water swellable coating surrounding said core, wherein said core is non-round in cross-sectional shape. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A fiber optic cable comprising:
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an outer jacket;
a plurality of buffer tubes containing a plurality of optical fibers; and
at least one filler rod disposed between at least two of said plurality of buffer tubes and said outer jacket, wherein said at least one filler rod is formed of a water swellable material having a non-round cross-sectional shape. - View Dependent Claims (20, 21)
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Specification