IP Library › Granted Patent US 10,784,021
Granted Patent B2
US 10,784,021 · App. 16/748,852 · Granted Sep 22, 2020

Shielded electrical cable

Inventor: Douglas B. Gundel (Cedar Park, TX)
Assignee: 3M Innovative Properties Company
H01B11/08G08B25/004H01B7/0823H01B7/0838H01B7/0861H01B7/0876H01B9/02H01B11/00H01B11/002H01B11/04H01B11/10H01B11/203H01R9/0515H01R12/598H01R13/5845H04L41/28H04W4/70H04W24/04H04W84/18H01R12/53H04L43/0811H04L43/0817
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Quick Facts
Patent No.
US 10,784,021
App. No.
16/748,852
Granted
Sep 22, 2020
Kind
B2
Abstract

A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.

Claims (8)

1. A shielded electrical cable, comprising:

a plurality of conductor sets extending along a length of the cable and arranged and spaced apart from each other along a width of the cable, each conductor set including two or more insulated conductors, at least 90% of a periphery of each conductor set encompassed by, and bonded to, a shielding film;

a non-conductive polymeric layer covering opposite sides of the plurality of conductor sets and substantially surrounding each conductor set, wherein a transverse bending of the cable at a cable location of 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the insulated conductors proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration, and wherein the cable has a skew of less than about 20 psec/meter.

2. The shielded electrical cable of claim 1 , wherein the insulated conductors have wire diameters not greater than 24 American Wire Gauge (AWG).

3. The shielded electrical cable of claim 1 , wherein the insulated conductors have wire diameters not greater than 26 American Wire Gauge (AWG).

4. The shielded electrical cable of claim 1 , wherein a transverse bending of a cable location of 180 degrees over an inner radius of at most 1 mm causes a cable impedance of the insulated conductors proximate the cable location to vary by no more than 1 percent from an initial cable impedance measured at the cable location in an unbent configuration.

5. The shielded electrical cable of claim 1 further comprising a bend of at least 45 degrees around a fold line that extends across a width of the cable, wherein the bend has an inner radius of at most 5 mm.

6. The shielded electrical cable of claim 5 , wherein the bend is at least 90 degrees and conforms to geometry of a structure that encloses the cable.

Continuity (13)
Continuation 16424794 · May 29, 2019
Continuation 16120624 · Sep 4, 2018
Continuation 15481539 · Apr 7, 2017
Continuation 15427544 · Feb 8, 2017
Continuation 15245708 · Aug 24, 2016
Continuation 14926464 · Oct 29, 2015
Continuation 14561291 · Dec 5, 2014
Continuation 13968674 · Aug 16, 2013
Continuation 13893828 · May 14, 2013
Continuation 13541794 · Jul 5, 2012
Continuation PCTUS2010060629 · Dec 16, 2010
Provisional Application 61378872 · Aug 31, 2010
Related Publication 20200161023A1 · May 21, 2020
Cited By (1)
US 12,205,733