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US 4,895,831 AGranted
Ceramic superconductor cryogenic current lead
AssigneeGeneral Electric Company
InventorEvangelos T. Laskaris
Life of this patent
Estimating the term…
Abstract
A two stage cryocooler sleeve is provided having a second stage heat exchanger system capable of achieving lower temperatures than the first stage heat exchanger. A current lead comprising a ceramic superconductor having a critical temperature greater than the operating temperature of the first stage is tapered. The broader end is thermally coupled to the first stage heat exchanger and the narrow end coupled to the second stage heat exchanger. The tapered ceramic lead reduces the heat conduction from the first heat exchanger to said second heat exchanger.
Claims2
Apparatus comprising:
- a two stage cryocooler sleeve having a second stage heat exchanger station capable of achieving lower temperatures than the first stage heat exchanger;
- and
- a current lead comprising a ceramic superconductor having a critical temperature greater than the operating temperature of the first stage of said cryocooler, said ceramic superconductor being tapered with the broader end thermally coupled to said first stage heat exchanger and the narrow end coupled to said second stage heat exchanger, said tapered ceramic lead reducing heat conduction from said first heat exchanger to said second heat exchanger station.
Dependencies are inferred from the claim text.