US5010210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telecommunications cable
Assignee: Nordx CDT Inc
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Filing: 1990-06-21
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Granted: 1991-04-23
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Expires: 2010-06-21
Abstract
Abstract An unshielded telecommunications cable with a nominal characteristic impedance of 100 ohms and a core with a maximum of six pairs of individually insulating conductor wires. The wire insulation is a flame retardant polyolefin base compound and the conductors of each pair are twisted together with a maximum twist lay of 2.3 inches. The core is surrounded by a flame retardant jacket.
Inventors
- 👤 Shiraz I. Sidi
- 👤 Paul A. Guilbert
- 👤 Lise A. Desroches
- 👤 Michel Plasse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:25
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/295; H01B11/00; H01B11/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
64 words
An unshielded telecommunications cable having a nominal characteristic impedance of 100 ohms and a core comprising a maximum of six pairs of individually insulated conductor wires, the wire insulation formed from a flame retardant polyolefin base compound and with the insulated conductors of each pair twisted together with the maximum twist lay of 2.3 inches and the core surrounded by a flame retardant jacket.
Claim 2
Dependent Claim
64 words
An unshielded telecommunications cable having a nominal characteristic impedance of 100 ohms and a core comprising a maximum of six pairs of individually insulated conductor wires, the wire insulation formed from a flame retardant polyolefin base compound and with the insulated conductors of each pair twisted together with the maximum twist lay of 2.3 inches and the core surrounded by a flame retardant jacket.
Claim 3
Dependent Claim
21 words
A cable according to claim 1 wherein the twist lay extends in one direction only around the core of the cable.
Claim 4
Dependent Claim
66 words
A cable according to claim 1 wherein the polyolefin-base compound comprises a base resin polyolefin in an amount of 40 to 65%, a halogenated flame retardant material in the range between 25 to 40%, antimony trioxide in the range from 10 to 20%, and stabilizer and lubricants in the range from 0.5 to 0.2%, all percentages being by weight of the total weight of the compound.
References Cited (Backward Citations)
US3006787A
Cited
US3433890A
Cited
US3571490A
Cited
US4012577A
Cited
US4370076A
Cited
US4408443A
Cited
US4500748A
Cited
US4500748B1
Cited
US4697051A
Cited
US4873393A
Cited
US4969706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |