发明授权
- 专利标题： Permanent magnet member and method of producing same
- 专利标题（中）： 永磁体及其制造方法
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申请号： US471692申请日： 1995-06-06
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公开(公告)号： US5649362A公开(公告)日： 1997-07-22
- 发明人: Mikio Yamamoto , Keitaro Yamashita , Katsunobu Kiriyama
- 申请人： Mikio Yamamoto , Keitaro Yamashita , Katsunobu Kiriyama
- 申请人地址： JPX Tokyo JPX Gunma-ken
- 专利权人： Hitachi Metals, Ltd.,Gunma Electronics, Ltd.
- 当前专利权人： Hitachi Metals, Ltd.,Gunma Electronics, Ltd.
- 当前专利权人地址： JPX Tokyo JPX Gunma-ken
- 优先权： JPX5-137153 19930608
- 主分类号： B03C1/12
- IPC分类号： B03C1/12 ; G03G15/09 ; G03G21/00 ; H01F7/02 ; H01F41/02 ; B23P15/00
摘要：
A permanent magnet member composed of an integral sintered body made of a ferrite magnet material, the integral sintered body including a cylindrical center portion and shaft portions formed at the opposite ends of the cylindrical center portion and each having a smaller diameter than that of the cylindrical center portion, the cylindrical center portion being provided with a plurality of magnetic poles extending axially and arranged circumferentially on an outer surface of the cylindrical center portion.
公开/授权文献
- US4476382A Encoding scheme for articles 公开/授权日：1984-10-09