Multi-pair cable with varying lay length

• US 7,550,676 B2
• Filed: 05/15/2008
• Issued: 06/23/2009
• Est. Priority Date: 06/21/2006
• Status: Expired due to Fees

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Wiekhorst, Dave, Stutzman, Spring, Johnston, Frederick W., Juengst, Scott
• Primary Examiner(s): Mayo, III; William H
• Application Number:
  US12/121,061
• Publication Number:
  US 20080283274A1
• Time in Patent Office: 404 Days
• Field of Search: 174/110.R, 174/113.R, 174/113.C, 174/113.AS, 174/115, 174/116, 174/36
• US Class Current: 174/110.00R
• CPC Class Codes: H01B 11/06 with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
• CPC Class Codes: H01B 7/1875 Multi-layer sheaths

Abstract

A multi-pair cable having a plurality of twisted conductor pairs. The twisted conductor pairs each have an initial lay length that is different from that of the other twisted conductor pairs. The plurality of twisted conductor pairs defines a cable core. The core is twisted at a varying twist rate such that the cable core has a mean lay length of less than 2.5 inches.

Claims

1. A patch cord, comprising:

a) a cable having a first end and a second end, the cable including;

i) a first twisted pair of conductors having a mean lay length of about 0.288 inches;

ii) a second twisted pair of conductors having a mean lay length of about 0.330 inches;

iii) a third twisted pair of conductors having a mean lay length of about 0.306 inches; and

iv) a fourth twisted pair of conductors having a mean lay length of about 0.347 inches; and

b) a connector attached to one of the first and second ends of the cable, the connector defining four apertures that each receive one of the twisted pairs, the connector further including eight channels that define consecutive channel positions 1 through 8, wherein;

i) the conductors of the second twisted pair are positioned within channel positions 1 and 2;

ii) the conductors of the third twisted pair are positioned within channel positions 4 and 5;

iii) the conductors of the fourth twisted pair are positioned within channel positions 7 and 8;

iv) the conductors of the first twisted pair are positioned within channel positions 3 and 6.

2. The patch cord of claim 1, wherein the cable includes a double jacket, the double jacket including an inner jacket that surrounds the twisted pairs and an outer jacket that surrounds the inner jacket.

3. The patch cord of claim 1, wherein the connector includes a housing piece and a separate insert that attaches to the housing piece, the four apertures and the eight channels being defined by the insert.

4. The patch cord of claim 3, wherein the four apertures are arranged to position each of the twisted pairs within the corresponding channel position, the four apertures including a first aperture located above an alignment of second, third, and fourth apertures, the location of the first aperture above the alignment of second, third and fourth apertures accommodating the split placement of the conductors of the first twisted pair within channel positions 3 and 6.

5. The patch cord of claim 3, wherein the housing piece includes prongs that engage the insert to provide a snap-fit connection between the housing piece and the insert.

6. The patch cord of claim 5, wherein the insert includes insert prongs, the insert prongs being received within a housing aperture defined by the housing piece, the insert prongs being radially biased inward when inserted within the housing aperture such that the insert prongs clamp down on the cable to secure the connector relative to the cable.

7. The patch cord of claim 6, wherein the housing piece defines a hole extending from an exterior side to at least the housing aperture, the patch cord further including an adhesive deposited within the hole to further secure the connector to the cable.