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:
Nov. 11, 2003
Filed:
Mar. 01, 2001
Applicant:
Inventor:
Masatoshi Yoshikawa, Kobe, JP;
Assignee:
Kabushiki Kaisha Kobe Seiko Sho, Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/00 ; H01H 4/700 ;
U.S. Cl.
CPC ...
H02H 7/00 ; H01H 4/700 ;
Abstract
A superconducting magnet circuit includes, besides a closed circuit formed of a plurality of unit superconducting coils and connected in series and a first persistent-current switch a second persistent-current switch which forms a closed circuit by connecting the ends of an arbitrary unit superconducting coil and is therefore made up of the two closed circuits, whereby their mutual induction suppresses the decay of the magnet apparatus' central magnetic field to provide extreme stability.