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:
Jun. 30, 2009
Filed:
Sep. 19, 2006
Hideo Iwasaki, Kawasaki, JP;
Akihiro Kasahara, Sambu-gun, JP;
Katsumi Hisano, Matsudo, JP;
Akihiro Koga, Tokyo, JP;
Akiko Saito, Kawasaki, JP;
Tadahiko Kobayashi, Yokohama, JP;
Takuya Takahashi, Tokyo, JP;
Hideo Iwasaki, Kawasaki, JP;
Akihiro Kasahara, Sambu-gun, JP;
Katsumi Hisano, Matsudo, JP;
Akihiro Koga, Tokyo, JP;
Akiko Saito, Kawasaki, JP;
Tadahiko Kobayashi, Yokohama, JP;
Takuya Takahashi, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
In a magnetic refrigerator, a permanent magnet unit shaped like a hub is so rotated as to face an annular magnetic unit having magnetic blocks arranged in a circumferential direction. The permanent magnet unit is also arranged to be concentric with a magnetic unit and has an inner and outer diameters substantially equal to those of the magnetic unit. Each of the magnetic blocks has positive and negative magnetic segments alternately arranged with predetermined gaps. As the permanent magnet unit rotates, heat conducting members are inserted into and removed from the gaps between the magnetic segments of the magnetic block. This allows heat generated from the magnetic segments to conduct in one direction.