Is a
Patent attributes
Patent Applicant
0
Current Assignee
0
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takeshi Nakayama0
Date of Patent
April 11, 2017
0Patent Application Number
146182960
Date Filed
February 10, 2015
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A permanent current switch device of a refrigerator cooling-type superconducting magnet includes a superconducting coil cooled by solid thermal conduction and a permanent current switch. A heat transfer member is thermally connected to a cooling stage and is structured to be inserted into and removable from a former of the permanent current switch. Due to differences in thermal expansion between the heat transfer member and the former, a permanent current mode can be stably maintained.
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