Patent ID: 8543178

Claim:
An induction heating apparatus that can operate at current frequencies of greater than 60 Hz and at at least 1 kW, said induction heating apparatus comprising a high frequency power supply, a superconductive induction coil, a superconductive power cable, and a fluid cooling system; said high frequency power supply designed to generate current frequencies of over 60 Hz and to generate at least 1 kW of power, said superconductive power cable connected to said high frequency power supply and said superconductive induction coil to enable power from said high frequency power supply to flow through said superconductive induction coil, said superconductive power cable formed of one or more different materials form said superconductive induction coil and having a different configuration from said superconductive induction coil, said superconductive power cable comprising a core, a high temperature superconductor material positioned at least partially about said core, and an inner cryostat wall spaced from said high temperature superconductor material to form a cooling fluid channel between said inner cryostat wall and said high temperature superconductor material; said fluid cooling system designed to cool said superconductive induction coil and said superconductive power cable; said superconductive induction coil designed to generate a magnetic induction field when current from said high frequency power supply flows therethrough thereby causing a workpiece in close proximity to said superconductive induction coil to be heated or melted.