发明名称 |
Loudspeaker diaphragm |
摘要 |
A loudspeaker diaphragm (1A) which is light in weight (low in density), good in environmental resistance, high in internal loss, easy to form, and high in degree of flexibility in designing its shape is provided. A polyimide foam material which has been molded into a block of foam (1) having a predetermined thickness is heated and pressed by a die (2) into a loudspeaker diaphragm (1A) made of the polyimide foam material. <IMAGE> |
申请公布号 |
EP1271997(A3) |
申请公布日期 |
2004.09.08 |
申请号 |
EP20020013459 |
申请日期 |
2002.06.13 |
申请人 |
PIONEER CORPORATION;MOGAMI DENKI CORPORATION |
发明人 |
TAKAHASHI, MASANORI;HASHIMOTO, TADAZUMI |
分类号 |
H04R7/02;H04R7/12;H04R31/00 |
主分类号 |
H04R7/02 |
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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