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:
Apr. 05, 2005
Filed:
Aug. 20, 2003
Kohji Maki, Hitachi, JP;
Houng Joong Kim, Hitachi, JP;
Yasuo Morooka, Hitachi, JP;
Keijirou Sakai, Kanasago, JP;
Hitoshi Shibata, Hitachi, JP;
Hideki Shimane, Mito, JP;
Hisao Tadokoro, Hitachi, JP;
Takashi Kobayashi, Hitachiota, JP;
Kohji Maki, Hitachi, JP;
Houng Joong Kim, Hitachi, JP;
Yasuo Morooka, Hitachi, JP;
Keijirou Sakai, Kanasago, JP;
Hitoshi Shibata, Hitachi, JP;
Hideki Shimane, Mito, JP;
Hisao Tadokoro, Hitachi, JP;
Takashi Kobayashi, Hitachiota, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Disclosed herewith a compact linear motor provided with a plurality of magnetic pole teeth and used to increase the thrust force by canceling a magnetic attractive force working between the primary member and the secondary member. The linear motor comprises a primary member and a secondary member. The primary member includes cores formed with a magnetic material and an electromagnetic coil wound on the cores while the secondary member supported so as to be capable of moving relatively with respect to the primary member with a gap therebetween. In the linear motor, the coil that is wound commonly on the cores is also disposed between adjacent magnetic pole teeth.