Patent US3849459A successfully refreshed from Google Patents.
Patent US5298680A successfully refreshed from Google Patents.
US5298680A
Expired / Lapsed
US
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Dual twisted pairs over single jacket
Assignee: Belden Wire and Cable Co
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Filing: 1992-08-07
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Granted: 1994-03-29
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Expires: 2012-08-07
Abstract
Abstract An electronic data transmission cable with twisted pairs (16) and (18) twisted into group (32). To reduce electro magnetic interference between adjacent insulated conductors (12) twisted pair such as (16) and (18) are combined into group (32). Other groups (34) and (36) may be pulled in parallel or may be twisted together prior to forming cable (30).
Inventors
- 👤 Robert D. Kenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:22
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/02; H01B11/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
105 words
A cable suitable for balanced mode transmission with relatively low crosstalk, said cable comprising: a first set of conductors twisted to form a first pair; a second set of conductors twisted to form a second pair, wherein said second pair is twisted with said first pair to form a first dual twisted pair group; a third set of conductors twisted to form a third pair; and a fourth set of conductors twisted to form a fourth pair, wherein said fourth pair is twisted with said third pair forming a second dual twisted pair group, wherein said first group and said second group are twisted together.
Claim 2
Dependent Claim
105 words
A cable suitable for balanced mode transmission with relatively low crosstalk, said cable comprising: a first set of conductors twisted to form a first pair; a second set of conductors twisted to form a second pair, wherein said second pair is twisted with said first pair to form a first dual twisted pair group; a third set of conductors twisted to form a third pair; and a fourth set of conductors twisted to form a fourth pair, wherein said fourth pair is twisted with said third pair forming a second dual twisted pair group, wherein said first group and said second group are twisted together.
Claim 3
Dependent Claim
39 words
A cable as in claim 1 wherein said third and fourth pairs forming said second group are twisted with each other in a direction opposite to the twist direction of said first and second pairs forming said first group.
Claim 4
Dependent Claim
20 words
A cable as in claim 1 wherein said first group and said second group are surrounded by a metallic shield.
Claim 5
Dependent Claim
14 words
A cable as in claim 1 wherein said cable comprises more than four groups.
Claim 6
Dependent Claim
14 words
A cable as in claim 1 wherein a sheath of plastic encloses said cable.
Claim 7
Dependent Claim
15 words
A cable as in claim 1 wherein a sheath of fluorocopolymer material encloses said cable.
Claim 8
Dependent Claim
15 words
A cable as in claim 1 wherein a sheath of fluorocopolymer insulation encloses said cable.
Claim 9
Dependent Claim
22 words
A cable as in claim 1 wherein a laylength of said first pair is different from a laylength of said third pair.
Claim 10
Dependent Claim
22 words
A cable as in claim 1 wherein a laylength of said first group is different from a laylength of said second group.
Claim 11
Dependent Claim
147 words
A cable suitable for balanced mode transmission with relatively low crosstalk, said cable comprising: a first set of conductors twisted to form a first pair; a second set of conductors twisted to form a second pair, wherein said second pair is twisted with said first pair to form a first dual twisted pair group; a third set of conductors twisted to form a third pair; a fourth set of conductors twisted to form a fourth pair, wherein said fourth pair is twisted with said third pair forming a second dual twisted pair group; and a fifth set of conductors twisted to form a fifth pair; and a sixth set of conductors twisted to form a sixth pair, wherein said sixth pair is twisted with said fifth pair forming a third dual twisted pair group, wherein said first, second, and third groups are twisted to form a cable.
Claim 12
Dependent Claim
147 words
A cable suitable for balanced mode transmission with relatively low crosstalk, said cable comprising: a first set of conductors twisted to form a first pair; a second set of conductors twisted to form a second pair, wherein said second pair is twisted with said first pair to form a first dual twisted pair group; a third set of conductors twisted to form a third pair; a fourth set of conductors twisted to form a fourth pair, wherein said fourth pair is twisted with said third pair forming a second dual twisted pair group; and a fifth set of conductors twisted to form a fifth pair; and a sixth set of conductors twisted to form a sixth pair, wherein said sixth pair is twisted with said fifth pair forming a third dual twisted pair group, wherein said first, second, and third groups are twisted to form a cable.
Claim 13
Dependent Claim
20 words
A cable as in claim 10 wherein said first group and said second group are surrounded by a metallic shield.
Claim 14
Dependent Claim
39 words
A cable as in claim 10 wherein said third and fourth pairs forming said second group are twisted with each other in a direction opposite to the twist direction of said first and second pairs forming said first group.
Claim 15
Dependent Claim
14 words
A cable as in claim 10 wherein said cable comprises more than four groups.
Claim 16
Dependent Claim
14 words
A cable as in claim 10 wherein a sheath of plastic encloses said cable.
Claim 17
Dependent Claim
15 words
A cable as in claim 10 wherein a sheath of fluorocopolymer material encloses said cable.
Claim 18
Dependent Claim
15 words
A cable as in claim 10 wherein a sheath of fluorocopolymer insulation encloses said cable.
Claim 19
Dependent Claim
22 words
A cable as in claim 10 wherein a laylength of said first pair is different from a laylength of said second pair.
Claim 20
Dependent Claim
22 words
A cable as in claim 10 wherein a laylength of said first group is different from a laylength of said second group.
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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) | 1997-03-28 | 1997-09-27 | 1998-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-28 | 2001-09-27 | 2002-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-28 | 2005-09-27 | 2006-03-29 | $7700.00 | Window Closed / Lapsed |