US3881052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable for transmission of PCM signals with plural independent signal paths
Assignee: KM Kabelmetal AG
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Filing: 1974-03-20
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Granted: 1975-04-29
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Expires: 1994-03-20
Abstract
Abstract The cable includes several bundles of conductors, each bundle having e.g. three quads. The quads of each bundle being shielded by a metal strip folded longitudinally around the conductors of the bundle with overlapping edges. In one example, a tab is formed, welded along the joint line and folded against the strip as enveloping the conductors of the bundle. In another example, at least one of the edges of the strip is provided with an adhesive, so that upon folding the strip, the edges overlap and are bonded together. The adhesive used here should be electrically conductive.
Inventors
- 👤 Helmut Britz
- 👤 Georg Maltz
- 👤 Gert Niemann
- 👤 Gerd Verdenhalven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:53
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/02; H01B11/06; H01B11/10; H01B11/1016; H01B13/00; H01B13/22; H01B13/26; H01B13/2613
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
In a communication cable for the transmission of PCM signals, which includes a plurality of bundles of conductors, the bundles being arranged in a jacket, each bundle of the plurality being individually shielded with respect to the other bundles in the cable, the improvement comprising: the shield of a bundle of the plurality being a longitudinally folded metal strip having its two longitudinal edges bonded in overlapping abutment, establishing a longitudinal joint of the shield of the bundle, there being but one such joint for each bundle and shield; all bundles of the plurality being disposed in the jacket, so that the bonded edges of the joint of each bundle are located as near to the center of the cable as possible.
Claim 2
Dependent Claim
122 words
In a communication cable for the transmission of PCM signals, which includes a plurality of bundles of conductors, the bundles being arranged in a jacket, each bundle of the plurality being individually shielded with respect to the other bundles in the cable, the improvement comprising: the shield of a bundle of the plurality being a longitudinally folded metal strip having its two longitudinal edges bonded in overlapping abutment, establishing a longitudinal joint of the shield of the bundle, there being but one such joint for each bundle and shield; all bundles of the plurality being disposed in the jacket, so that the bonded edges of the joint of each bundle are located as near to the center of the cable as possible.
Claim 3
Dependent Claim
15 words
In a cable as in claim 1, wherein the edges are welded along their end-faces.
Claim 4
Dependent Claim
16 words
In a cable as in claim 1, wherein the edges are bonded together with an adhesive.
Claim 5
Dependent Claim
38 words
In a cable as in claim 1, wherein the edges abut in the form of a tab, and have been folded sideways against the strip, so that the edges overlap on the strip as folded about the conductors.
Claim 6
Dependent Claim
22 words
In a cable as in claim 4, wherein one of the edges overlap the other one with an electrically conductive adhesive in-between.
Claim 7
Dependent Claim
21 words
In a cable as in claim 5, wherein the tap has been seam-welded along a joint line between the two edges.
Claim 8
Dependent Claim
19 words
In a cable as in claim 1, wherein the several bundles have pie-shape and together establish a circular configuration.
Claim 9
Dependent Claim
32 words
In a cable as in claim 1, wherein gaps between the shield of each bundle and the conductor assemblies of the bundle are filled with a plastic material bonded to the shield.
Claim 10
Dependent Claim
52 words
In a cable as in claim 1, wherein the conductor assemblies of each bundle are included in a plastic carrier engaging the bundles over most of the periphery of each of them for holding them in position, the shield being bonded to the outer periphery of the carrier in contour matching relation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |