Communication cables with twisted tape separators

• US 10,276,281 B1
• Filed: 11/08/2016
• Issued: 04/30/2019
• Est. Priority Date: 11/08/2016
• Status: Active Grant

• Current Assignee: Superior Essex International IP
• Original Assignee: Superior Essex International Lp (LS Corporation)
• Inventors: Cook, Thomas Christopher
• Primary Examiner(s): Sawyer, Steven T
• Assistant Examiner(s): Paghadal, Paresh H
• Application Number:
  US15/345,775
• Time in Patent Office: 903 Days
• CPC Class Codes: H01B 11/06 with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
• CPC Class Codes: H01B 7/282 Preventing penetration of fluid , e.g. water or humidity, into conductor or cable
• CPC Class Codes: H01B 7/295 using material resistant to flame

Abstract

A cable may include a plurality of twisted pairs of individually insulated conductors and a separator positioned between the twisted pairs. The separator may be formed from a tape that is scored at a plurality of respective spaced locations along a longitudinal direction. As a result of scoring the second portion, a plurality of longitudinally spaced sections extending from the first portion may be defined. The tape may then be twisted along the longitudinal direction such that a first of the plurality of sections extends in a first direction between a first set of adjacent twisted pairs and a second of the plurality of sections extends in a second direction different than the first direction and between a second set of adjacent twisted pairs. A jacket may be formed around the twisted pairs and the separator.

Claims

1. A cable comprising:

a plurality of twisted pairs of individually insulated electrical conductors that extend along a longitudinal direction;

a tape separator positioned between the twisted pairs, the tape separator comprising;

a first portion that is continuous and twisted along the longitudinal direction; and

a second portion that is severed at a plurality of respective spaced locations along the longitudinal direction from a longitudinally extending edge of the tape separator to the first portion in order to define a plurality of longitudinally spaced sections;

wherein longitudinally adjacent sections included in the plurality of longitudinally spaced sections of the second portion extend from the first portion in different directions between different sets of adjacent twisted pairs included in the plurality of twisted pairs;

wherein, along a longitudinal length of the tape separator, the second portion extends between each set of adjacent twisted pairs included in the plurality of twisted pairs, and

wherein, at any given cross-sectional location along the longitudinal length of the tape separator, the second portion does not extend between each set of adjacent twisted pairs included in the plurality of twisted pairs; and

a jacket formed around the twisted pairs and the tape separator.

2. The cable of claim 1, wherein the tape separator comprises a substantially flat separator prior to the first portion being twisted.

3. The cable of claim 1, wherein the longitudinally extending edge comprises a first longitudinally extending edge and the first portion is positioned proximate to a second longitudinally extending edge opposite the first edge.

4. The cable of claim 1, wherein the second portion is severed at a plurality of respective spaced locations in a direction perpendicular to the longitudinal direction.

5. The cable of claim 1, wherein the second portion is severed at a plurality of respective-spaced locations in accordance with a repeating pattern.

6. The cable of claim 1, wherein each of the plurality of longitudinally spaced sections comprises one of a rectangular, parallelogram, approximately triangular, or trapezoidal shape.

7. The cable of claim 1, wherein each of the plurality of longitudinally spaced sections has an approximately equal length in the longitudinal direction.

8. The cable of claim 1, wherein the tape separator comprises electromagnetic shielding material.

9. The cable of claim 1, wherein the tape separator comprises at least one dielectric layer and at least one layer of electromagnetic shielding material.

10. A cable comprising:

a plurality of twisted pairs of individually insulated electrical conductors that extend along a longitudinal direction;

a tape separator positioned between the twisted pairs, the tape separator comprising;

a longitudinally continuous portion that is twisted along its longitudinally length; and

a plurality of longitudinally spaced sections extending from the continuous portion and defined by severing the separator at a plurality of spaced locations from an edge to the continuous portion,

wherein the plurality of longitudinally spaced sections extend from the continuous portion in alternating directions along the longitudinal length, each longitudinally adjacent pair of spaced sections extending between different sets of adjacent twisted pairs included in the plurality of twisted pairs;

wherein, along a longitudinal length of the tape separator, the plurality of longitudinally spaced sections extend between each set of adjacent twisted pairs included in the plurality of twisted pairs, and

wherein, at any given cross-sectional location along the longitudinal length of the tape separator, the plurality of longitudinally spaced sections only extend between one or two sets of adjacent twisted pairs included in the plurality of twisted pairs; and

a jacket formed around the twisted pairs and the separator.

11. The cable of claim 10, wherein the edge comprises a first longitudinally extending edge and the continuous portion is positioned proximate to a second longitudinally extending edge opposite the first edge.

12. The cable of claim 10, wherein the separator is severed at the plurality of spaced locations in a direction perpendicular to the longitudinal direction.

13. The cable of claim 10, wherein the separator is severed at the plurality of spaced locations in accordance with a repeating pattern.

14. The cable of claim 10, wherein each of the plurality of longitudinally spaced sections comprises one of a rectangular, parallelogram, approximately triangular, or trapezoidal shape.

15. The cable of claim 10, wherein each of the plurality of longitudinally spaced sections has an approximately equal length in the longitudinal direction.

16. The cable of claim 10, wherein the separator comprises electromagnetic shielding material.