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Title: Mechanically stable, high-aspect-ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same

Abstract

A mechanically stable, wound, multifilar, ribbon-type conductor is described having a cross-sectional aspect ratio which may be greater than 12:1, comprising a plurality of conductive strands wound to form a flattened helix containing a plastic strip into which the strands have been pressed so as to form a bond between the strip and the strands. The bond mechanically stabilizes the conductor under tension, preventing it from collapsing into a tubular configuration. In preferred embodiments the plastic strip may be polytetrafluoroethylene, and the conductive strands may be formed from a superconductive material. Conductors in accordance with the present invention may be manufactured by winding a plurality of conductive strands around a hollow mandrel; the cross-section of a hollow mandrel; the cross-section of the mandrel continuously varying from substnatially circular to a high aspect ratio elipse while maintaining a constant circumference. The wound conductive strands are drawn from the mandrel as a multifilar helix while simultaneously a plastic strip is fed through the hollow mandrel so that it is contained within the helix as it is withdrawn from the mandrel. The helical conductor is then compressed into a ribbon-like form and the strands are bonded to the plastic strip by a combinationmore » of heat and pressure.« less

Inventors:
Issue Date:
OSTI Identifier:
6798950
Application Number:
ON: DE83006867
Assignee:
Dept. of Energy EDB-83-043624
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; MAGNET COILS; FABRICATION; SUPERCONDUCTING COILS; ASPECT RATIO; MANUFACTURING; SUPERCONDUCTING MAGNETS; ELECTRIC COILS; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; MAGNETS; SUPERCONDUCTING DEVICES 420201* -- Engineering-- Cryogenic Equipment & Devices

Citation Formats

Cottingham, J.G. Mechanically stable, high-aspect-ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same. United States: N. p., 1982. Web.
Cottingham, J.G. Mechanically stable, high-aspect-ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same. United States.
Cottingham, J.G. Mon . "Mechanically stable, high-aspect-ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same". United States.
@article{osti_6798950,
title = {Mechanically stable, high-aspect-ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same},
author = {Cottingham, J.G.},
abstractNote = {A mechanically stable, wound, multifilar, ribbon-type conductor is described having a cross-sectional aspect ratio which may be greater than 12:1, comprising a plurality of conductive strands wound to form a flattened helix containing a plastic strip into which the strands have been pressed so as to form a bond between the strip and the strands. The bond mechanically stabilizes the conductor under tension, preventing it from collapsing into a tubular configuration. In preferred embodiments the plastic strip may be polytetrafluoroethylene, and the conductive strands may be formed from a superconductive material. Conductors in accordance with the present invention may be manufactured by winding a plurality of conductive strands around a hollow mandrel; the cross-section of a hollow mandrel; the cross-section of the mandrel continuously varying from substnatially circular to a high aspect ratio elipse while maintaining a constant circumference. The wound conductive strands are drawn from the mandrel as a multifilar helix while simultaneously a plastic strip is fed through the hollow mandrel so that it is contained within the helix as it is withdrawn from the mandrel. The helical conductor is then compressed into a ribbon-like form and the strands are bonded to the plastic strip by a combination of heat and pressure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {3}
}