Patent ID: 6972374
Filing Date: 2005-12-06
Classification: H01B,Y02E,Y10S

Abstract:
1. A flexible superconducting core for a superconducting power cable, said core comprising: a) a helical central corrugated flexible tubular element made of stainless steel; b) a stainless steel core mesh positioned around said helical central corrugated flexible tubular element to provide a relatively flat surface, said mesh consisting of: c) a layer of at least one copper tape positioned on top of said second layer of said core mesh; d) a plurality of superconducting tapes layered over said at least one copper tape, forming a first group of a plurality of superconducting tape layers; e) a second group of a plurality of superconducting tape layers, at least one layer of said second group positioned on top of said first group of plurality of superconducting tape layers and being wound in one direction opposite to that of (d); and wherein a pitch of the layers varies from a maximum P wherein: a) for the inner layers: b) for the outer layers: