发明名称 Electromagnetic transducer and portable communication device
摘要 An electromagnetic transducer includes a magnetic member, a suspension for supporting the magnetic member at a central portion of the suspension, a diaphragm connected to the suspension, a magnet for generating magnetic flux on the magnetic member, and a coil for generating alternating magnetic flux on the magnetic member. <IMAGE>
申请公布号 EP1194002(A3) 申请公布日期 2003.06.18
申请号 EP20010122630 申请日期 2001.09.27
申请人 MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 发明人 USUKI, SAWAKO;SAIKI, SHUJI
分类号 B06B1/04;H04R7/12;H04R13/02 主分类号 B06B1/04
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