Patent ID: 9691530
Date: 2017-06-27
CPC Classifications: H01F

Claim:
1. A coil device, comprising: a self-contained circuit for the formation of a continuous current including at least one electrical coil winding with superconducting conductor material, and a switchable conductor section having a conductor switchable between a superconducting state and a normally conducting state; a vacuum container surrounding the at least one electrical coil winding; and a magnetic device, switching the switchable conductor section of the self-contained circuit between the superconducting state and the normally conducting state, the magnetic device having an internal part arranged inside the vacuum container and an external part arranged outside the vacuum container; wherein the internal part of the magnetic device has at least one internal flux guiding element, and wherein the external part of the magnetic device has at least one external flux guiding element and at least one magnet.