Appeal No. 1998-1917
Application No. 08/766,984
shaped insulating material consisting of a material having a
thermal contraction rate of at least three times that of the
superconductor wires is in turn spirally wound on the
superconducting wires. Appellants assert at page 4 of the
specification that the higher thermal contraction rate of the
insulating material enables pressure to be exerted on the
wires toward the former support structure during cooling
thereby improving electrical contact between the superposed
superconducting wires.
Claim 1 is illustrative of the invention and reads as
follows:
1. An insulated superconducting cable conductor
having a plurality of tape-shaped multifilamentary oxide
superconducting wires, said insulated superconducting cable
conductor comprising:
an elongated former having flexibility;
said plurality of tape-shaped multifilamentary oxide
superconducting wires being spirally wound on said former at a
bending strain factor in a prescribed range; and
a tape-shaped insulating material being spirally
wound on said multifilamentary superconducting wires,
said multifilamentary superconducting wires being
superposed in layers on said former, whereby stabilizing
materials of superposed said superconducting wires are in
contact with each other,
2
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