Forward twisted profiled insulation for LAN cables

Patent metadata

Field	Value
Publication number	US-9368258-B2
Application number	US-201113303226-A
Country	US
Kind code	B2
Filing date	Nov 23, 2011
Priority date	Nov 23, 2011
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

The present arrangement provides a twisted pair of conductors, each with a profiled insulation thereon, where in the twisted pair, the peak to peak contact of adjacent conductor insulation is ensured along the length of the pair. To this end, each of the profiled insulations on the conductors of the pair are forward twisted prior to twinning to ensure the maximum number of peak to peak contacts per unit length of the pair.

First claim

The invention claimed is:

1. A twisted pair of conductors, said pair comprising:
a first insulated conductor having a series of peaks and valleys forming a profiled insulation; and
a second insulated conductor having a series of peaks and valleys forming a profiled insulation,
wherein said first and second insulated conductors are twisted around one another in a first direction into a twisted pair;
wherein said first and second insulated conductors are both independently forward twisted along their own individual axis in the same first direction as the direction of twist of said twisted pair prior to being twisted into said twisted pair such that peaks of said first and second insulated conductors abut one another in a substantially non-parallel manner, so as to substantially prevent said peaks of said profiled insulation of said first and second conductors from nesting in said valleys of said profiled insulation on the corresponding first and second conductors in said pair, so that the distance between two conductors is maximized in a twisted pair along the length of the entire twisted pair,
wherein said first and second insulated conductors are both forward twisted in the same first direction as the direction of twist of said pair at a range of substantially 83% to 100%.

2. The twisted pair as claimed in claim 1 , wherein said profiled insulation on said first and second insulated conductors is constructed having substantially seven to ten peaks and valleys forming said profile.

3. The twisted pair as claimed in claim 2 , wherein said profiled insulation on said first and second insulated conductors has an outer diameter of approximately 0.050″ with said valleys formed as cuts in the outer diameter of said insulation of substantially 0.0061″ and cut across about 16°.

4. The twisted pair as claimed in claim 1 , wherein said first and second insulated conductors are twisted around one another, in a first direction into a pair at a twist rate of a range of 0.2″ to 1.0″ per twist.

Assignees

• Heffner Greg
• Nexans

Inventors

• Heffner Greg

Classifications

• H01B11/06 Primary

  with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens · CPC title

• H01B7/0275

  comprising one or more extruded layers of insulation · CPC title

• H01B13/14

  by extrusion {(extrusion in general B29C48/00)} · CPC title

• H01B13/143

  with a special opening of the extrusion head · CPC title

• H01B11/02

  Cables with twisted pairs or quads · CPC title