Separator spline and cables using same

• US 7,897,875 B2
• Filed: 11/19/2008
• Issued: 03/01/2011
• Est. Priority Date: 11/19/2007
• Status: Active Grant

• Current Assignee: Belden Inc.
• Original Assignee: Belden Inc.
• Inventors: Gareis, Galen M.
• Primary Examiner(s): Nguyen; Chau N
• Application Number:
  US12/274,229
• Publication Number:
  US 20090173514A1
• Time in Patent Office: 832 Days
• Field of Search: 174/113.C, 174/131.A
• US Class Current: 174/113.00R
• CPC Class Codes: H01B 11/06 with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens

Abstract

A cable, specifically a data cable, which utilizes a T-shaped spline to separate four internal data cables. This cable is a specific form of a more general cable which utilizes a central spline which is designed to separate all but one pair of component cables to provide for material savings in cable construction which still sufficiently reducing cross-talk to meet data cable design specifications.

Claims

1. A multi-part cable comprising:

four-component cables, each of said component cables having a different lay length; and

a T-shaped spline having a longitudinal axis extending along the longitudinal axis of the cable;

the spline comprising;

a main beam having a first side and a second side; and

an auxiliary beam which extends from said first side of said main beam at or about the center of the main beam, and generally has a latitudinal dimension about one half the dimension of the main beam;

wherein the component cable having the longest lay length and the component cable having the second shortest lay length are placed on said first side of said main beam and are separated from each other by said auxiliary beam; and

wherein the component cable having the shortest lay length and the component cable having the second longest lay length are arranged on said second side of said main beam and are not separated from each other by any portion of said spline.

2. The cable of claim 1 wherein said cable meets the criteria set out by one of the standards selected from the group of standards consisting of:

category 5, category 5e, and category 6.

3. The cable of claim 1 wherein each of the component cables comprises a twisted pair of insulated conductors.

4. The cable of claim 3 wherein each of said twisted pairs of insulated conductors is a double helix.

5. The cable of claim 1 further comprising:

an insulative jacket enclosing the T-shaped filler and the component cables.

6. The cable of claim 5 further comprising:

a shield which also encloses said T-shaped filler and said component cables and is also enclosed by said insulative jacket.

7. The cable of claim 1 further comprising:

a shield which encloses said T-shaped filler and said component cables.

8. A multi-part cable comprising:

four twisted pair data cables each of which is formed of two intertwined individually insulated conductors having a longitudinal axis, each of said four twisted pair data cables having a different lay length;

a T-shaped filler having a generally T-shaped cross-sectional shape with three arms and a longitudinal axis; and

an insulative jacket enclosing said data cables and said T-shaped filler along their longitudinal axes;

wherein two of said at least four cables are not separated by an arm of said T-shaped filler; and

wherein said two cables not separated by an arm of said T-shaped filler are the cable having the shortest lay length, and the cable having the second longest lay length.

9. The cable of claim 8 wherein said cable meets the criteria set out by one of the standards selected from the group of standards consisting of:

category 5, category 5e, and category 6.

10. A collected cable comprising:

a first multi-part cable comprising;

three component cables; and

a T-shaped spline having a longitudinal axis extending along the longitudinal axis of the cable;

the spline comprising;

a main beam; and

an auxiliary beam which extends from one side of said main beam at or about the center of the main beam, and generally has a latitudinal dimension about one half the dimension of the main beam; and

a second multi-part cable comprising;

four component cables; and

a T-shaped spline having a longitudinal axis extending along the longitudinal axis of the cable;

the spline comprising;

a main beam; and

an auxiliary beam which extends from one side of said main beam at or about the center of the main beam, and generally has a latitudinal dimension about one half the dimension of the main beam;

wherein within said second multi-part cable;

each of said four component cables has a different lay length; and

the component cable having the shortest lay length and the component cable having the second longest lay length are not separated from each other by any portion of said spline.