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Title: Method and apparatus for making multistrand superconducting cable

Abstract

Improved multistrand Rutherford-type superconducting cable (42) is produced in a flattened form with two layers of helically wound strands (33) and in which the strands are alternately twisted about their lengths equally and in opposite directions to provide a flat cable with improved stability. In particular, the cable (42) is made by guiding multifilament wire strands (33) from spools (32) on a rotating turret (11) to a fixed tapered forming mandrel (22) where they are wound diagonally around the mandrel and then rolled into a flattened shape. The spools (32) are located around the periphery of the turret and are rotatable about axes in a plane parallel to the turret (11) to unroll the wire. Sprocket assemblies (48 and 49) are driven by drive chains (68 and 76) to rotate alternate spools (32) equally and in opposite directions relative to the forming mandrel (22) so that the wire strands (33) are twisted prior to being wound on the mandrel (22). The rate of rotation of the spools (32) in one direction is different than the rate of rotation of the spools (32) in the opposite direction to compensate for the rate of rotation of the turret (11) so that allmore » strands (33) have the same degree of twist about their lengths.« less

Inventors:
 [1];  [2]
  1. (Oakland, CA)
  2. (Orinda, CA)
Issue Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
OSTI Identifier:
867484
Patent Number(s):
4947637
Assignee:
United States of America as represented by United States (Washington, DC) LBNL
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; multistrand; superconducting; cable; improved; rutherford-type; 42; produced; flattened; form; layers; helically; wound; strands; 33; alternately; twisted; lengths; equally; opposite; directions; provide; flat; stability; particular; guiding; multifilament; wire; spools; 32; rotating; turret; 11; fixed; tapered; forming; mandrel; 22; diagonally; rolled; shape; located; periphery; rotatable; axes; plane; parallel; unroll; sprocket; assemblies; 48; 49; driven; drive; chains; 68; 76; rotate; alternate; relative; prior; rate; rotation; direction; compensate; degree; twist; superconducting cable; plane parallel; opposite direction; opposite directions; improved stability; multifilament wire; wire strands; multistrand rutherford-type; flat cable; helically wound; improved multistrand; /57/

Citation Formats

Royet, John M., and Armer, Rollin A. Method and apparatus for making multistrand superconducting cable. United States: N. p., 1990. Web.
Royet, John M., & Armer, Rollin A. Method and apparatus for making multistrand superconducting cable. United States.
Royet, John M., and Armer, Rollin A. Mon . "Method and apparatus for making multistrand superconducting cable". United States. https://www.osti.gov/servlets/purl/867484.
@article{osti_867484,
title = {Method and apparatus for making multistrand superconducting cable},
author = {Royet, John M. and Armer, Rollin A.},
abstractNote = {Improved multistrand Rutherford-type superconducting cable (42) is produced in a flattened form with two layers of helically wound strands (33) and in which the strands are alternately twisted about their lengths equally and in opposite directions to provide a flat cable with improved stability. In particular, the cable (42) is made by guiding multifilament wire strands (33) from spools (32) on a rotating turret (11) to a fixed tapered forming mandrel (22) where they are wound diagonally around the mandrel and then rolled into a flattened shape. The spools (32) are located around the periphery of the turret and are rotatable about axes in a plane parallel to the turret (11) to unroll the wire. Sprocket assemblies (48 and 49) are driven by drive chains (68 and 76) to rotate alternate spools (32) equally and in opposite directions relative to the forming mandrel (22) so that the wire strands (33) are twisted prior to being wound on the mandrel (22). The rate of rotation of the spools (32) in one direction is different than the rate of rotation of the spools (32) in the opposite direction to compensate for the rate of rotation of the turret (11) so that all strands (33) have the same degree of twist about their lengths.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

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