The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2009
Filed:
Jan. 11, 2007
Alexander Usoskin, Höbach, DE;
Burkhard Prause, Gründau, DE;
Alexander Usoskin, Höbach, DE;
Burkhard Prause, Gründau, DE;
European High Temperature Superconductors GmbH & Co. KG, Alzenau, DE;
Abstract
An electrical device for current conditioning has a primary spool, a secondary spool which has a quenchable superconductor exhibiting a transition from a low resistive state to a high resistive state when a critical value of the electric current is exceeded. The secondary spool is coupled through a common part of magnetic flux with the primary spool, the secondary spool further has a metallic memberwhich form a closed loop circuit, and a cryostatproviding a cooling of the secondary spool. The secondary spoolhas at least one elementbased on a substantial fraction of a non-quenchable conductor that exhibits a minor dependence of its resistance on current and magnetic field, and a fraction of the quenchable superconductor and at least one turn of the non-quenchable conductorand the quenchable superconductoris electrically jointed in series providing a closed loop circuit.