Global Patent Index - EP 0970484 A1

EP 0970484 A1 2000-01-12 - MINERAL INSULATED CABLE

Title (en)

MINERAL INSULATED CABLE

Title (de)

MINERALISOLIERTES KABEL

Title (fr)

CABLE A ISOLANT MINERAL

Publication

EP 0970484 A1 (EN)

Application

EP 98910830 A

Priority

  • GB 9800665 W
  • GB 9706257 A

Abstract (en)

[origin: WO9843254A1] A method of manufacturing mineral insulated cable comprises transporting a strip (1) of metal and one or more elongate conductors (4) along their length, continuously forming the strip into a tube that encloses the or each conductor, and welding opposed longitudinally extending edges of the strip together. Mineral insulant is inserted into the tube to form a cable preform, and the cable preform is subjected to one or more reduction operations in which its diameter is reduced to form the cable. The mineral insulant comprises amorphous silica that contains from 0.01 to 30 % by weight of a binder that causes the silica to resist deformation of the tube when the tube is subjected to the reduction operations. Preferred binders include mullite in the range of about 13 to 20 % by weight, and lime in the range of from 1 to 20 % by weight.

IPC 1-7

H01B 13/00

IPC 8 full level

H01B 13/004 (2006.01)

CPC

H01B 13/004 (2013.01)

Citation (search report)

See references of WO 9843254A1

DCS

FR GB IT

DOCDB simple family

WO 9843254 A1 19981001; AU 6506298 A 19981020; EP 0970484 A1 20000112; EP 0970484 B1 20030723; GB 9706257 D0 19970514