发明名称 |
Polarized electromagnet device |
摘要 |
A polarized electromagnet device is constructed with a magnetic block movable within a specially designed yoke in response to the attraction forces of permanent magnets and an electromagnetic coil. The movable block and yoke designs form magnetic circuits which result in a relatively large permanent magnet attraction forces on the attraction side of the device and relatively small permanent magnet attraction force on the return side such that a spring load on the return side is not required.
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申请公布号 |
US4730175(A) |
申请公布日期 |
1988.03.08 |
申请号 |
US19870046451 |
申请日期 |
1987.05.06 |
申请人 |
FUJI ELECTRIC CO., LTD. |
发明人 |
ICHIKAWA, HARUO;HIROTA, TAKATO |
分类号 |
H01F7/08;H01H51/22;(IPC1-7):H01F7/08 |
主分类号 |
H01F7/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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