Bobbin for superconducting coils

Details Bobbin for superconducting coils Bobbin for superconducting coils

1996-04-12

1997-11-04

Mansen, Michael

Winding, tensioning, or guiding

Coil holder or support

Spool or core

1741251, 24211832, 2426104, 2426106, 242430, B65H 7514, H01B 1200

Patent

active

056830599

ABSTRACT:
A bobbin for superconducting coils, which is made of a fiber-reinforced plastic material containing: (1) a matrix resin; (2) a polyethylene fiber having a negative thermal expansion coefficient in the fiber lengthwise direction, the angle between the polyethylene fiber and the longitudinal axis of the bobbin being in the range of .+-.35.degree. to 90.degree.; and (3) a substance having an elastic modulus higher than that of the polyethylene fiber. The bobbin of the present invention is useful for superconducting coils because it only exhibits a quite low degree of deformation, even when used under external stress at cryogenic temperatures.

REFERENCES:
patent: 3559126 (1971-01-01), Drautman, Jr.
patent: 4694268 (1987-09-01), Kawamura et al.
patent: 4763404 (1988-08-01), Coffey et al.
patent: 4808954 (1989-02-01), Ito
patent: 5276281 (1994-01-01), Sato et al.
patent: 5384197 (1995-01-01), Koyama et al.

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