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. 19, 1989
Filed:
Jun. 22, 1988
Applicant:
Inventor:
Moriaki Takechi, Ako, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
361141 ; 335216 ;
Abstract
A superconducting electromagnet apparatus wherein a superconducting main coil and a superconducting shield coil for reducing external magnetic field leakage generated by the main coil are magnetically, but not electrically, coupled, a single magnetizing power source is connected across the main coil, and persistent currect switches are respectively connected in parallel with the main coil and the shield coil.