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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 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 substantially 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simultaneously a plastic strip is fed through the hollow mandrel so that it is contained within the helix as it is withdrawn from the mandrel.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 heatmore » and pressure.« less

Inventors:
 [1]
  1. Center Moriches, NY
Issue Date:
Research Org.:
ASSOC UNIVERSITIES INC
OSTI Identifier:
875203
Patent Number(s):
H369
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
mechanically; stable; aspect; ratio; multifilar; wound; ribbon-type; conductor; method; manufacturing; cross-sectional; 12; comprising; plurality; conductive; strands; form; flattened; helix; containing; plastic; strip; pressed; bond; stabilizes; tension; preventing; collapsing; tubular; configuration; preferred; embodiments; polytetrafluoroethylene; formed; superconductive; material; conductors; accordance; manufactured; winding; hollow; mandrel; cross-section; continuously; varying; substantially; circular; elipse; maintaining; constant; circumference; drawn; simultaneously; fed; contained; withdrawn; helical; compressed; ribbon-like; bonded; combination; heat; pressure; mechanically stable; preferred embodiments; aspect ratio; conductive material; preferred embodiment; superconductive material; hollow mandrel; continuously varying; ribbon-type conductor; substantially circular; /174/29/

Citation Formats

Cottingham, James G. Mechanically stable, high aspect ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same. United States: N. p., 1987. Web.
Cottingham, James G. Mechanically stable, high aspect ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same. United States.
Cottingham, James G. Thu . "Mechanically stable, high aspect ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same". United States. https://www.osti.gov/servlets/purl/875203.
@article{osti_875203,
title = {Mechanically stable, high aspect ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same},
author = {Cottingham, James G},
abstractNote = {A mechanically stable, wound, multifilar, ribbon-type conductor 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 substantially 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 = {1987},
month = {1}
}

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