Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Superconductive type
Reexamination Certificate
2007-01-17
2009-10-13
Enad, Elvin G (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Superconductive type
C335S217000, C174S125100, C361S019000, C361S020000, C361S021000, C361S139000, C361S141000, C336S155000
Reexamination Certificate
active
07602269
ABSTRACT:
There is disclosed a permanent current switch which has a high temperature margin and which is thermally stable and which securely performs a switching operation between a superconducting state and a normal conducting state. The permanent current switch of the present invention has a coiled superconducting wire and a heater wire which switches the superconducting wire between the superconducting state and the normal conducting state, the superconducting wire is a magnesium diboride superconducting wire having a high-resistance metal on an outer side and a magnesium diboride superconducting portion on an inner side and prepared by forming a superconducting metal on a layer between the high-resistance metal and the magnesium diboride superconducting portion, and the permanent current switch further comprises a superconductive connecting section superconductively connected to a lead wire guided from the superconducting wire and a superconducting wire for a wiring line.
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Okada Michiya
Takahashi Masaya
Tanaka Kazuhide
Crowell & Moring LLP
Enad Elvin G
Hitachi , Ltd.
Musleh Mohamad A
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