US5001304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building riser cable
Assignee: Commscope Inc of North Carolina
•
Filing: 1989-07-25
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Granted: 1991-03-19
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Expires: 2009-07-25
Abstract
Abstract A cable which may be used in buildings in riser shafts includes a core (22) which includes at least one transmission medium which is enclosed in a non-halogenated plastic material. The core is enclosed with a jacket (29) which also is made of a non-halogenated plastic material. The non-halogenated material which encloses the transmission medium is a plastic material selected from the group consisting of a filled polyolefin, a polyphenylene oxide, a polyetherimide and a silicone-polyimide copolymer, and blend compositions of a polyetherimide and a silicone-polyimide copolymer. For the jacket, the plastic material comprises a filled polyolefin.
Inventors
- 👤 Tommy G. Hardin
- 👤 Behrooz A. Khorramian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:45
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/32; H01B11/00; H01B11/02; G; G02; G02B; G02B6/00; G02B6/46; G02B6/47; G02B6/475; H01B7/00; H01B7/17; H01B7/29; H01B7/295
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
72 words
A communication cable, which comprises: a core which comprises at least one transmission medium, said transmission medium being enclosed with a thermoplastic material which is selected from the group consisting of a filled polyolefin, a polyphenylene oxide, a polyetherimide, a silicone-polyimide copolymer, and blend compositions of a polyetherimide and a silicone-polyimide copolymer; and a jacket which encloses said core, said jacket comprising a thermoplastic material which comprises a filled polyolefin thermoplastic material.
Claim 2
Dependent Claim
72 words
A communication cable, which comprises: a core which comprises at least one transmission medium, said transmission medium being enclosed with a thermoplastic material which is selected from the group consisting of a filled polyolefin, a polyphenylene oxide, a polyetherimide, a silicone-polyimide copolymer, and blend compositions of a polyetherimide and a silicone-polyimide copolymer; and a jacket which encloses said core, said jacket comprising a thermoplastic material which comprises a filled polyolefin thermoplastic material.
Claim 3
Dependent Claim
47 words
The cable of claim 1, wherein said filled polyolefin plastic materials is a composition which comprises a polyolefin plastic material and a filler constituent which is selected from the group consisting of antimony trixoide, a metal hydroxide, and blend compositions of antimony trioxide and a metal hydroxide.
Claim 4
Dependent Claim
24 words
The cable of claim 2, wherein said filler constituent comprises antimony trioxide which comprises five percent by weight of said filled polyolefin plastic material.
Claim 5
Dependent Claim
28 words
The cable of claim 2, wherein said filler constituent comprises a metal hydroxide which comprises about 20 to about 70% by weight of said filled polyolefin plastic material.
Claim 6
Dependent Claim
12 words
The cable of claim 2, wherein said filler constituent includes aluminum hydroxide.
Claim 7
Dependent Claim
12 words
The cable of claim 2, wherein said filler constituent includes magnesium hydroxide.
Claim 8
Dependent Claim
17 words
The cable of claim 1, wherein the maximum optical density of the cable is less than 0.5.
Claim 9
Dependent Claim
20 words
The cable of claim 1, which also includes a metallic shield which is disposed between said core and said jacket.
Claim 10
Dependent Claim
19 words
The cable of claim 5, wherein said shield is a laminate comprising a metallic material and a polyimide film.
Claim 11
Dependent Claim
19 words
The cable of claim 8, wherein said shield is a laminate comprising a metallic material and a polyetherimide film.
Claim 12
Dependent Claim
18 words
The cable of claim 8, wherein said shield is a laminate comprising a metallic and a polyester film.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-18 | 1994-09-17 | 1995-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-18 | 1998-09-17 | 1999-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-18 | 2002-09-17 | 2003-03-19 | $7700.00 | Window Closed / Lapsed |