Systems, methods, and apparatus for superconducting magnetic...

Electricity: electrical systems and devices – Safety and protection of systems and devices – Superconductor protective circuits

Reexamination Certificate

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C335S216000, C174S015400

Reexamination Certificate

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07990662

ABSTRACT:
A localized area is at least partially contained within a perimeter of a shield ring formed by a closed superconducting current path of a material that is superconductive below a critical temperature. The shield ring is at least partially within a perimeter of a compensation coil that is coupled to a current source. One or more measurement devices are responsive to magnetic fields in the vicinity of the localized area, allowing compensation by controlling current to the compensation coil. A heater can raise temperature of the shield ring out of a superconducting condition.

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