Cable with twisted pair centering arrangement

• US 7,592,550 B2
• Filed: 08/10/2007
• Issued: 09/22/2009
• Est. Priority Date: 12/22/2005
• Status: Active Grant

• Current Assignee: Bison Patent Licensing, LLC
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Johnston, Fred, Stutzman, Spring, Juengst, Scott, Wiekhorst, Dave
• Primary Examiner(s): Nguyen; Chau N
• Application Number:
  US11/891,655
• Publication Number:
  US 20080115958A1
• Time in Patent Office: 774 Days
• Field of Search: 174/113.R, 174/113.C, 174/131.A
• US Class Current: 174/113.00C
• CPC Class Codes: H01B 11/06 with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens

Abstract

A multi-twisted pair cable including a plurality of twisted pairs positioned within pockets of a filler. The filler including shaped elements having retaining members for retaining the twisted conductor pairs of the plurality within the pockets of the filler. At least one of the shaped elements of the filler having an end piece that creates a helical ridge in the jacket of the multi-twisted pair cable.

Claims

1. A method of assembling a cable, comprising the steps of:

a) providing a flexible filler having a center and a plurality of legs that define pockets, the legs having a first end connected to the center and a second end opposite the first end, the second end of at least one leg of the plurality of legs being located a distance farther from the center than another lea;

b) providing a plurality of twisted pairs, each of the twisted pairs having a length;

c) zipping each twisted pair into a corresponding pocket of the filler, including pressing each twisted pair along the length of the twisted pair while deforming the filler so that the twisted pair zip-fits within the corresponding pocket, the zip-fit being provided by a zip-fit construction including a retaining element located adjacent to the second end of each leg; and

d) applying a jacket over the filler and the twisted pairs zip-fit with the pockets of the filler;

e) wherein a ridge is formed in the jacket by the second end of the at least one leg.

2. The method of claim 1, wherein the twisted pairs are captured by the retaining elements without the retaining elements substantially surrounding the twisted pairs.

3. The method of claim 1, further including twisting the filler about a central filler axis after the twisted pairs are zip-fit within the pockets.

4. The method of claim 3, wherein the step of applying the jacket over the filler and the twisted pairs;

is performed after the filler has been twisted.

5. The method of claim 4, wherein the ridge is a helical ridge formed in the jacket by the twisted filler.

6. The method of claim 1, further including deforming the filler while applying the jacket, wherein the twisted pairs are biased toward the center of the filler central filler axis by the deformation.

7. The method of claim 6, wherein the filler spaces the twisted pairs from the jacket.

8. The method of claim 1, wherein the step of providing the plurality of twisted pairs includes providing twisted pairs each having a twist rate that is different from that of the other twisted pairs.

9. The method of claim 8, further including changing the twist rate of each twisted pair by twisting the filler about a central filler axis.

10. The method of claim 8, wherein the step of providing twisted pairs includes providing twisted pairs each twisted in the same twist direction.

11. The method of claim 10, further including twisting the filler in the same twist direction as the twisted pairs, after the twisted pairs are zip-fit within the pockets, to increase the twist rate of each twisted pair.

12. A cable, including:

a) a plurality of twisted pairs;

b) a filler defining pockets, each twisted pair being positioned within one of the pockets, the filler including;

i) a plurality of spokes, each spoke including a first end and a second end, the first ends of the spokes being joined to define a filler center; and

ii) shaped elements located at the second ends of the spokes, each of the shaped elements including a retaining member oriented in a generally transverse position relative to the corresponding spoke, the retaining members being arranged to retain the twisted pairs within the pockets of the filler, at least one of the shaped elements extending a distance farther from the filler center than the other shaped elements, the at least one shaped element including an end piece having a circular cross-section; and

c) a jacket surrounding the filler and the plurality of twisted pairs.

13. The cable of claim 12, wherein the jacket has a helical ridge formed by the end piece of the filler.

14. The cable of claim 12, wherein the retaining members are constructed such that the twisted pairs are zip-fit within the pockets of the filler.

15. The cable of claim 12, wherein the retaining members have a triangular shape.

16. The cable of claim 12, wherein the filler has a major filler dimension and a minor filler dimension, the at least one shaped element including the end piece defining the major filler dimension.

17. The cable of claim 12, wherein the spokes define four pockets each sized to receive one twisted pair.