Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Superconductive type
Patent
1996-12-12
1997-11-25
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Superconductive type
505211, H01F 100
Patent
active
056916795
ABSTRACT:
A superconductive lead assembly for a superconductive device (e.g., magnet) cooled by a cryocooler coldhead having first and second stages. A first ceramic superconductive lead has a first end flexibly, dielectrically, and thermally connected to the first stage and a second end flexibly, dielectrically, and thermally connected to the second stage. A first glass-reinforced-epoxy lead overwrap is in general surrounding contact with and attached to the first superconductive lead. The first lead overwrap has a coefficient of thermal expansion generally equal to that of the first superconductive lead. The lead overwrap protects the lead from moisture damage and from breakage during handling. For added protection against shock and vibration while in the device, the lead assembly is surrounded by a (e.g., polystyrene foam) jacket surrounded by a helically-wound metallic wire surrounded by a glass-reinforced-epoxy jacket overwrap surrounded by a rigid support tube.
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English language translation of French Publication No. 2,560,421, which was cited in IOS OF Dec. 11, 1996.
European Search Report EP 95 30 4880.
"Grain-Aligned YBCO Superconducting Current Leads for Conduction-Cooled Applications", by KG Herd et al., IEEE Transactions on Applied Superconductivity, Vo. 3, No. 1, Mar. 1993.
Ackermann Robert Adolph
Herd Kenneth Gordon
Laskaris Evangelos Trifon
Lay Kenneth Wilbur
Ranze Richard Andrew
Donovan Lincoln
Erickson Douglas E.
General Electric Company
Snyder Marvin
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