High performance data cable

• US 8,497,428 B2
• Filed: 09/08/2011
• Issued: 07/30/2013
• Est. Priority Date: 04/09/1996
• Status: Expired due to Fees

• Current Assignee: Belden Inc.
• Original Assignee: Belden Inc.
• Inventors: Gareis, Galen Mark, Vanderlaan, Paul Z.
• Primary Examiner(s): Mayo, III, William H
• Application Number:
  US13/227,657
• Publication Number:
  US 20110315443A1
• Time in Patent Office: 691 Days
• Field of Search: 174/110.R, 174/113.R, 174/120.R, 174/131.AS, 174/131.A, 174/115, 174/116.R, 174/112
• US Class Current: 174/110.R
• CPC Class Codes: H01B 11/02 Cables with twisted pairs or quads
• CPC Class Codes: H01B 11/06 with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens

Abstract

A high performance data cable which has an interior support or star separator. The star separator or interior support extends along the longitudinal length of the data cable. The star separator or interior support has a central region. A plurality of prongs or splines extend outward from the central region along the length of the central region. Each prong or spline is adjacent with at least two other prongs or splines. The prongs or splines may be helixed or S-Z shaped as they extend along the length of the star separator or interior support. Each pair of adjacent prongs or splines defines grooves which extend along the longitudinal length of the interior support. At least two of the grooves have disposed therein an insulated conductor. The interior support can have a first material and a different second material. The different second material forms an outer surface of the interior support.

Claims

1. A shielded twisted pair data communications cable comprising:

a plurality of twisted pairs of conductors configured to carry data communications signals;

an interior support having a surface that defines a plurality of channels in the data communications cable within which the plurality of twisted pairs of conductors are individually disposed; and

a cable covering longitudinally enclosing the plurality of twisted pairs of conductors and the non-conductive interior support to form the data communications cable, the cable covering including an electrically conductive shield and an outer jacket formed of a non-conductive material;

wherein the cable covering in combination with the interior support maintains the plurality of twisted pairs of conductors within the channels defined by the surface of the interior support.

2. The shielded twisted pair data communications cable of claim 1, wherein the plurality of twisted pairs of conductors and the interior support are twisted together about a common axis to close the cable.

3. The shielded twisted pair data communications cable of claim 2, wherein the plurality of twisted pairs of conductors and the interior support are twisted together with one of a helical twist and an S-Z twist.

4. The shielded twisted pair data communications cable of claim 1, wherein the interior support includes a longitudinally extending central portion and a plurality of prongs extending radially outward from the longitudinally extending central portion, wherein the plurality of channels are defined by the plurality of prongs.

5. The shielded twisted pair data communications cable of claim 4, wherein each prong of the plurality of prongs is adjacent two other prongs of the plurality of prongs, the plurality of prongs forming a plurality of pairs of adjacent prongs;

and

wherein each channel of the plurality of channels is defined by one pair of adjacent prongs.

6. The shielded twisted pair data communications cable of claim 5, wherein the plurality of prongs consists of four prongs, the plurality of channels consists of four channels, and the plurality of twisted pairs of conductors consists of four twisted pairs of conductors.

7. The shielded twisted pair data communications cable of claim 6, wherein each prong of the four prongs extends radially outward from the longitudinally extending central portion at approximately right angles to at least one other prong of the four prongs.

8. The shielded twisted pair data communications cable of claim 1, wherein the communications cable is about 0.300 inches to 0.400 inches in diameter.

9. The shielded twisted pair data communications cable of claim 1, wherein the interior support includes a conformal conductive material disposed over the surface of the interior support.

10. The shielded twisted pair data communications cable of claim 9, wherein the conformal conductive material includes a foil shield layer.

11. The shielded twisted pair data communications cable of claim 1, wherein the cable covering includes a polymer binder, and wherein the electrically conductive shield is attached to the polymer binder, with the shield facing the plurality of twisted pairs.

12. The shielded twisted pair data communications cable of claim 11, wherein the cable covering further includes a drain wire spirally wrapped around the shield.

13. A shielded twisted pair data communications cable comprising:

four twisted pairs of conductors configured to carry data communications signals;

an interior support having a surface that defines four channels, one twisted pair of conductors being disposed in each of the four channels; and

a cable covering longitudinally enclosing the four twisted pairs of conductors and the interior support to form the data communications cable, the cable covering including an outer jacket and an electrically conductive shield disposed beneath the outer jacket;

wherein the cable covering in combination with the interior support maintains the four twisted pairs of conductors within the four channels defined by the surface of the interior support;

wherein the interior support includes a longitudinally extending central portion and four prongs extending radially outward from the central portion, the four channels being defined by adjacent pairs of the four prongs; and

wherein each prong has a non-uniform width.

14. The shielded twisted pair data communications cable of claim 13, wherein the four twisted pairs of conductors and the interior support are twisted together with one of a helical twist and an S-Z twist.

15. The shielded twisted pair data communications cable of claim 13, wherein the outer jacket includes polyvinyl chloride.

16. The shielded twisted pair data communications cable of claim 13, wherein the cable covering further includes a polymer binder substantially surrounding the plurality of twisted pairs of conductors and the pair separator along the length of the cable and disposed beneath the jacket;

wherein the electrically conductive shield is attached to the polymer binder, with the shield facing the plurality of twisted pairs of conductors.

17. The shielded twisted pair data communications cable of claim 13, wherein the cable covering further includes a drain wire spirally wrapped around the shield.

18. The shielded twisted pair data communications cable of claim 13, wherein the interior support includes a first material and a second material, the second material being a conductive material and including a conformal layer disposed over the surface of the interior support.

19. The shielded twisted pair data communications cable of claim 18, wherein the electrically conductive shield contacts each of the four prongs.

20. The shielded twisted pair data communications cable of claim 18, wherein the second material includes a foil shield layer.

21. A shielded twisted pair data communications cable comprising:

a plurality of twisted pairs of conductors configured to carry data communications signals;

an interior support constructed and arranged within the cable to provide at least two channels within which the plurality of twisted pairs of conductors are disposed, at least one channel containing at least two twisted pairs of conductors; and

a cable covering longitudinally enclosing the plurality of twisted pairs of conductors and the interior support, the cable covering including an outer jacket and an electrically conductive shield disposed beneath the outer jacket;

wherein the plurality of twisted pairs of conductors and the interior support are helically twisted together about a common central axis to close the shielded twisted pair data communications cable.

22. The shielded twisted pair data communications cable of claim 21, wherein the plurality of twisted pairs of conductors consists of four twisted pairs.

23. The shielded twisted pair data communications cable of claim 21, wherein the cable covering and the pair separator together maintain the plurality of twisted pairs of conductors in their respective channels.

24. The shielded twisted pair data communications cable of claim 21, wherein the outer jacket includes polyvinyl chloride.

25. The shielded twisted pair data communications cable of claim 21, wherein the cable covering further includes a polymer binder substantially surrounding the plurality of twisted pairs of conductors and the pair separator along the length of the cable and disposed beneath the outer jacket;

wherein the electrically conductive shield is attached to the polymer binder, with the shield facing the plurality of twisted pairs of conductors.

26. The shielded twisted pair data communications cable of claim 21, wherein the cable covering further includes a drain wire spirally wrapped around the shield.