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:
Aug. 15, 1989
Filed:
Feb. 25, 1988
Kazuo Bessho, Kanazawa, JP;
Sotoshi Yamada, Kanazawa, JP;
Kanazawa University, Kanazawa, JP;
Abstract
The disclosed strong magnetic field generator has a number of concentric conductor circular plates, central portions thereof being unified, each of which plates has a radial slit so as to have open sidewalls. Exciting coils are mounted between each of the concentric circular plates respectively, so as to induce an eddy current in each of the conductor circular plates in a peripheral direction. A conductor circular plate forming the unified central portions of the concentric circular plates has a central hole and a radial slit extending from the central hole to each of the slits of the concentric circular plates and connected with each other at a periphery thereof, while the central hole is placed at the center of all of the concentric circular plates and while all of the radial slits are aligned in a longitudinal direction. Thus, the path of eddy current in each circular plate is closed through sidewall portions of the radial slit and the central hole, and hence the eddy currents of all the concentric circular plates are superposed at the sidewall portion of the central hole for generating an extremely strong magnetic field in the central hole.