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:
Mar. 31, 2026
Filed:
Dec. 28, 2021
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventor:
Tsuyoshi Wakuda, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 21/00 (2006.01); H01F 6/04 (2006.01);
U.S. Cl.
CPC ...
F25B 21/00 (2013.01); H01F 6/04 (2013.01); F25B 2321/0022 (2013.01);
Abstract
A rotating magnetic field generation device of the present invention includes: a magnetic field generating unit including disks in which a plurality of magnets are arranged circumferentially, a magnetic field working space formed by stacking the disks at intervals to make the plurality of magnets face each other, and a shaft to which the stacked disks are fixed, the shaft being installed at a central axis of the disks; an adiabatic vacuum vessel in which the magnetic field generating unit is installed; and a drive mechanism that is installed in a room temperature region and rotates the shaft.