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Composite materials

  • US 3,963,425 A
  • Filed: 09/20/1974
  • Issued: 06/15/1976
  • Est. Priority Date: 04/15/1971
  • Status: Expired due to Term
First Claim
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1. A superconducting composite including bundles of longitudinally extending filaments,i. each bundle including longitudinally extending superconductor filamentsa. each filament being surrounded by and in good electrical contact with a matrix materialb. the matrix material comprising longitudinally extending cells of a metal of high electrical conductivity surrounded by a material of lower electrical conductivityc. the arrangement of the matrix material within the bundle being such that where at least two superconductor filaments are circumferentially circumscribed by a single annulus of the metal of high electrical conductivity, the annulus is electrically interrupted by a radially extending wall of the material of the lower electrical conductivityii. the bundles being surrounded by and in good electrical contact with a further matrix materiala. the further matrix material comprising longitudinally extending cells of a metal of high electrical conductivity surrounded by a material of lower electrical conductivityb. the arrangement of the further matrix material around the bundles being such that where at least two bundles are circumferentially circumscribed by a single annulus of the metal of high conductivity, the annulus is electrically interrupted by a radially extending wall of the material of the lower electrical conductivity.

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