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

Patent · Thu Jan 01 04:00:00 EST 1987

OSTI ID:875203

Cottingham, James G. ^[1]

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1. Center Moriches, NY

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simultaneously a plastic strip is fed through the hollow mandrel so that it is contained within the helix as it is withdrawn from the mandrel.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.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH00016
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): H000369
• Application Number: 06/358086
• OSTI ID: 875203
• Country of Publication: United States
• Language: English

Related Subjects

/174/29/
accordance
aspect
aspect ratio
bond
bonded
circular
circumference
collapsing
combination
compressed
comprising
conductive
conductive material
conductor
conductors
configuration
constant
contained
containing
continuously
continuously varying
cross-section
cross-sectional
elipse
embodiments
fed
flattened
form
formed
heat
helical
helix
hollow
hollow mandrel
maintaining
mandrel
manufactured
manufacturing
material
mechanically
mechanically stable
multifilar
plastic
plurality
polytetrafluoroethylene
preferred
preferred embodiment
preferred embodiments
pressure
preventing
ratio
ribbon-like
ribbon-type
ribbon-type conductor
simultaneously
stabilizes
stable
statutory invention registration
strands
strip
substantially
substantially circular
superconductive
superconductive material
tension
tubular
varying
winding
withdrawn
wound