Global Patent Index - EP 1117103 A3

EP 1117103 A3 2002-11-06 - Electrical cable having improved flame retardancy and reduced crosstalk and method for making

Title (en)

Electrical cable having improved flame retardancy and reduced crosstalk and method for making

Title (de)

Elektrisches Kabel mit verbesserter Flammhemmung und verringertem Nebensprechen sowie Herstellungsverfahren

Title (fr)

Câble électrique ayant une résistance à la flamme améliorée et diaphonie réduite et méthode de fabrication

Publication

EP 1117103 A3 (EN)

Application

EP 01300260 A

Priority

US 49291400 A

Abstract (en)

[origin: EP1117103A2] Embodiments of the invention include a flute (16), a fluted electrical cable (10) and a method for making. The flute (16) is made of a perfluoronated resin such as FEP and is configured with webs (24) arranged to separate conductive elements within the cable. The thickness (T) of the individual webs is approximately 10 mils to approximately 30 mils, the overall width (W) of the flute from the tip of one web to the tip of an opposing web is approximately 120 mils to approximately 170 mils, and the weight per unit length of the flute is less than approximately 6.0 grams per meter (g/m). The flute is foamed or, alternatively, is made with melt fractured. The fluted electrical cable (10) includes a plurality of paired conductors (14), a dielectric jacket (12) formed around the paired conductors, and the inventive flute (16) configured to separate the paired conductors within the dielectric jacket. The method for making the electrical cable includes providing the paired conductors, combining the paired conductors with the inventive flute, and forming a protective dielectric jacket around the paired conductor/flute combination. In one embodiment, the method includes forming a foamed flute. In an alternative embodiment, the method includes forming a melt fractured flute, for example, by extruding the perfluoronated resin at an extrusion rate that exceeds the critical shear rate for such material. <IMAGE>

IPC 1-7 (main, further and additional classification)

H01B 11/04

IPC 8 full level (invention and additional information)

B29C 47/02 (2006.01); H01B 7/295 (2006.01); H01B 11/04 (2006.01); H01B 13/00 (2006.01)

CPC (invention and additional information)

H01B 11/04 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1117103 A2 20010718; EP 1117103 A3 20021106; JP 2001273822 A 20011005

INPADOC legal status


2004-02-04 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030507

2003-07-23 [AKX] PAYMENT OF DESIGNATION FEES

- Designated State(s): DE FR GB

2002-11-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-11-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI

2001-07-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2001-07-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI