Ceramic superconducting lead resistant to breakage

Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – Significant cryogenic refrigeration system having...


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505701, 505230, 1741251, 428209, 428688, 335300, 335296, B32B 900




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 jacket of open cell material (e.g., polystyrene foam) is in general surrounding compressive contact with the first ceramic superconductive lead, and a rigid support tube generally surrounds the jacket. This protects the first ceramic superconductive lead against shock and vibration while in the device. The rigid support tube has a first end and a second end, with the second end thermally connectable to the second stage.

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patent: 3767838 (1973-10-01), McConnell
patent: 4600802 (1986-07-01), Ihas
patent: 4635450 (1987-01-01), Laskaris
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"Grain-Aligned YBCO Superconducting Current Leads for Conduction-Cooled Applications", by K. G. Herd et al., IEEE Transactions on Applied Superconductivity, vol. 3, No. 1, Mar. 1993.
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Concurrently filed U.S. Patent Application RD-23426 entitled "Ceramic Superconducting Lead Resistant To Moisture And Breakage", by Robert A. Ackermann et al.
U.S. patent application Ser. No. 08/209,287, filed Mar. 14, 1994, entitled "Superconducting Lead Assembly For A Cryocooler-Cooled Superconducting Magnet", by Kenneth G. Herd et al.


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