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.
申请公布号 US2002037089(A1) 申请公布日期 2002.03.28
申请号 US20010965966 申请日期 2001.09.28
申请人 MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD 发明人 USUKI SAWAKO;SAIKI SHUJI
分类号 B06B1/04;H04R7/12;H04R13/02;(IPC1-7):H04R5/02;H04R1/00 主分类号 B06B1/04
代理机构 代理人
主权项
地址