Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
A communications cable which has suitable protection from lightning, said cable including a core comprising at least one transmission medium, a plastic jacket which is disposed about said core, and a metallic shield which is disposed about said core and interposed between said core and said jacket, said cable being characterized by a barrier layer which includes a tape and which is disposed about said core and interposed between said core and said metallic shield, said barrier layer comprising a high temperature resistant material which is characterized by a thermal conductivity in the range of about 0.0001 to 0.005 cal.cm/cm 2 .sec 0 C. and which inhibits substantially the flow therethrough of particles which are sufficient in size to damage said core.
Claim 2
Dependent Claim
122 words
A communications cable which has suitable protection from lightning, said cable including a core comprising at least one transmission medium, a plastic jacket which is disposed about said core, and a metallic shield which is disposed about said core and interposed between said core and said jacket, said cable being characterized by a barrier layer which includes a tape and which is disposed about said core and interposed between said core and said metallic shield, said barrier layer comprising a high temperature resistant material which is characterized by a thermal conductivity in the range of about 0.0001 to 0.005 cal.cm/cm 2 .sec 0 C. and which inhibits substantially the flow therethrough of particles which are sufficient in size to damage said core.
Claim 3
Dependent Claim
27 words
The cable of claim 1, wherein said barrier layer comprises strands of material each having a tensile strength on the order of at least about 1.4 GPa.
Claim 4
Dependent Claim
29 words
The cable of claim 2, wherein said tape of said barrier layer is characterized by an air permeability of about 0.20 to 0.36 m 3 /m2sec at 124 Pa.
Claim 5
Dependent Claim
13 words
The cable of claim 1, wherein said tape comprises a woven glass material.
Claim 6
Dependent Claim
77 words
The cable of claim 1, wherein said tape of said barrier layer is characterized by a softening temperature in excess of 700 0 C, a longitudinal breaking strength of at least about 420 Newtons per cm of width and a transverse breaking strength of at least about 350 Newtons per cm of width and wherein said tape is comprised of strands of material each having a tensile strength in the order of at least about 1.4 GPa.
Claim 7
Dependent Claim
21 words
The cable of claim 1, wherein said cable also includes a longitudinally extending tubular member in which is disposed said core.
Claim 8
Dependent Claim
17 words
The cable of claim 1, wherein said barrier layer also includes provisions for providing a waterblocking capability.
Claim 9
Dependent Claim
29 words
The cable of claim 7, wherein said barrier layer comprises a laminate comprising a woven glass tape and a spunbonded non-woven polyester material having a superabsorbent powder disposed therebetween.
Claim 10
Dependent Claim
33 words
The cable of claim 7, wherein said barrier layer includes a laminate comprising a relatively high temperature thermally resistant tape and a relatively porous tape which has been impregnated with a superabsorbent material.
Claim 11
Dependent Claim
43 words
The cable of claim, wherein said barrier layer comprises a tape which is impregnated with a superabsorbent material and wherein said tape comprises a spunbonded polyester material including continuous filament polyester fibers that are randomly arranged, highly dispersed and bonded at filament junctions.