HIGH PERFORMANCE DATA CABLE

• US 20110253419A1
• Filed: 06/30/2011
• Published: 10/20/2011
• Est. Priority Date: 04/09/1996
• Status: Active Grant

• Current Assignee: Belden Inc.
• Original Assignee: Belden Inc.
• Inventors: Vanderlaan, Paul Z., Gareis, Galen Mark
• Granted Patent: US 8,536,455 B2
• Time in Patent Office: Days
• US Class Current: 174/116
• 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 high performance data communications cable comprising:

a non-conductive interior support formed of a copolymer and having a longitudinally extending central portion and a plurality of arms radially extending from the central portion along the length of the central portion, each arm of the plurality of arms being adjacent to two other arms of the plurality of arms, the plurality of arms forming a plurality of pairs of adjacent arms, the plurality of pairs of adjacent arms defining a corresponding plurality of grooves;

a plurality of twisted pair conductors configured to carry data communications signals, only one twisted pair of the plurality of twisted pairs being respectively located in each groove of the plurality of grooves; and

a cable covering surrounding the plurality of twisted pairs and the interior support along a length of the cable;

wherein the interior support is configured in combination with the cable covering to maintain the plurality of twisted pairs within the grooves defined by the plurality of pairs of adjacent arms of the interior support; and

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

2. The high performance data communications cable of claim 1, wherein the longitudinally extending central portion of the interior support is cylindrical.

3. The high performance data communications cable of claim 1, wherein the cable covering includes an overall shield.

4. The high performance data communications cable of claim 3, wherein the shield includes a lateral fold, the shield being supported by the plurality of arms, the shield and the plurality of pairs of adjacent arms defining a plurality of at least four conductor compartments in which the plurality of twisted pair conductors are individually disposed.

5. The high performance data communications cable of claim 1, wherein the interior support consists of at least one dielectric material.

6. The high performance data communications cable of claim 1, wherein the cable covering consists of an outer jacket, the outer jacket being formed of a non-conductive material.

7. The high performance data communications cable of claim 6, wherein the outer jacket comprises polyvinyl chloride.

8. The high performance data communications cable of claim 6, wherein the cable is unshielded and does not include an electrically conductive shield between the outer jacket and the twisted pair conductors and the interior support.

9. The high performance data communications cable of claim 1, wherein the cable covering contacts each arm of the interior support.

10. The high performance data communications cable of claim 1, wherein each arm has a non-uniform width.

11. The high performance data communications cable of claim 1, wherein in the plurality of arms, each arm having a first and second lateral side, and a portion of the first lateral side and a portion of the second lateral side of at least one of the arms converging towards each other.

12. The high performance data communications cable of claim 1, wherein each arm of the plurality of arms has a base that is integral with the central portion of the interior support, a tip, a first lateral side, and a second lateral side, the first lateral side and the second lateral side extending from the base to the tip of the arm, the first and second lateral sides converging toward one another from the base to the tip of the arm.

13. The high performance data communications cable of claim 1, wherein the plurality of twisted pair conductors consists of four twisted pair conductors, and wherein the plurality of arms consists of four arms.

14. The high performance data communications cable of claim 1, wherein the interior support is solid beneath its surface.

15. The high performance data communications cable of claim 1, wherein the interior support is configured to define a cavity in the central portion, the cable further comprising a strength member disposed within the cavity along the length of the central portion.

16. The high performance data communications cable of claim 1, wherein the cable covering includes a polymer binder sheet wrapped around the interior support to enclose the plurality of twisted pair conductors.

17. The high performance data communications cable of claim 1, further comprising a gel filler filling a void space within the cable between the interior support, the plurality of twisted pair conductors and the cable covering.