High-vacuum-maintaining structure of superconducting cable

Details High-vacuum-maintaining structure of superconducting cable High-vacuum-maintaining structure of superconducting cable

2007-10-30

2007-10-30

Patel, Ishwar (I. B.) (Department: 2841)

Electricity: conductors and insulators

With fluids or vacuum

With cooling or fluid feeding, circulating or distributing

C029S599000

Reexamination Certificate

active

11003655

ABSTRACT:
Disclosed herein is a high-vacuum-maintaining structure of a superconducting cable. The superconducting cable includes inner and outer metal tubes, and spacers disposed between the inner and outer metal tubes for spacing them by a prescribed distance. To the spacers is attached a gathering material, which serves to adsorb residual gas between the inner and outer metal tubes, thereby maintaining the superconducting cable in a high-vacuum state for a long time, improving thermal insulation performance of the superconducting cable, and reducing cooling costs and maintenance costs required for vacuum pumping thereof.

REFERENCES:
patent: 3947622 (1976-03-01), Graneau
patent: 4845308 (1989-07-01), Womack et al.
patent: 6576843 (2003-06-01), Ashworth
patent: 6759593 (2004-07-01), Spreafico
patent: 2002/0170733 (2002-11-01), Rasmussen
patent: 2005/0056456 (2005-03-01), Ladie′ et al.

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