Mass terminable cable
AssigneeMinnesota Mining and Manufacturing Company
InventorsHarry A. Loder, Denis D. Springer, John L. Roche
Life of this patent
Estimating the term…
Abstract
A ribbon cable or discrete wires, having a layer of thermally stable, crush resistant, fibril microporous heat sealable thermoplastic crystallizable polymer dielectric surrounding said conductor. The thermoplastic dielectric having a void volume in excess of 70%, a propagation velocity of the insulated conductor greater than 85% the propagation velocity in air and the crush resistance being the recovery rate of the material after being under a 500 gram weight for 10 minutes greater than 92% of the initial thickness.
Claims17
A cable for transmitting electromagnetic signals comprising:
- a conductor, and
- a layer of thermally stable, crush resistant, fibril microporous heat sealable thermoplastic crystallizable polymer dielectric surrounding said conductor, said dielectric having a void volume in excess of 70%, a propagation velocity of the insulated conductor greater than 85% the propagation velocity in air and the recovery rate after being under a 500 gram weight for 10 minutes greater than 92% of the initial thickness.
A mass terminable cable for transmitting electromagnetic signals comprising:
- a plurality of conductors disposed in spaced side-by-side parallel relationship to define a row of conductors, which row has opposite sides and ends,
- at least one layer of thermally stable, crush resistant, fibril microporous thermoplastic material disposed on opposite sides of said row of conductors, with the layers on opposite sides bonded together between adjacent conductors and along the ends of the row, said thermoplastic material having a void volume in excess of 70%, a propagation velocity of the insulated conductor greater than 85% the speed in air and a recovery rate after being under a 500 gram weight for 10 minutes is greater than 92% of the initial thickness.
A process for making a cable comprising the steps of
- placing a plurality of conductors in parallel close spaced relationship to form a row of conductors in transverse section,
- positioning a web of thermally stable, crush resistant, fibril microporous dielectric thermoplastic polymer having a void volume in excess of 70%, with a propagation velocity of the insulated conductor greater than 85% the speed in air and the recovery rate after being under a 500 gram weight for 10 minutes of greater than 92% of the initial thickness, against each side of said row of conductors, and
- bonding the webs together in the area between the conductors.
Dependencies are inferred from the claim text.