发明名称 |
Transducer of the piezo-electric type |
摘要 |
Improved transducer for reproducing and/or recording sound, which mainly consists of a membrane (2) onto which is provided a one-piece or multipart piezo-electric element (4), characterized in that the membrane (2) is composed of two or several layers (6-7) of which at least one layer (7) is made of polymer. <IMAGE>
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申请公布号 |
EP1422970(A2) |
申请公布日期 |
2004.05.26 |
申请号 |
EP20030078135 |
申请日期 |
2003.10.03 |
申请人 |
SONITRON, NAAMLOZE VENNOOTSCHAP |
发明人 |
MICHIELS, HUGO |
分类号 |
H04R17/00;H04R17/02;H04R31/00;(IPC1-7):H04R17/00 |
主分类号 |
H04R17/00 |
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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