发明名称 |
Low frequency acoustical piezo-electric transducer |
摘要 |
A piezo-electric transducer for low frequency acoustical waves comprising a stack of piezo-electric elements and alternating electrodes disposed between a front receiver plate and a counter mass. The countermass comprises a rigid annular block surrounding the stack, a rear plate engaging the rear of the stack and an elastic connection between the block and the rear plate.
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申请公布号 |
US4031418(A) |
申请公布日期 |
1977.06.21 |
申请号 |
US19750610076 |
申请日期 |
1975.09.03 |
申请人 |
ETAT FRANCAIS |
发明人 |
CLUZEL, PHILIPPE;QUIVY, MICHEL;TOCQUET, BERNARD |
分类号 |
H04R1/22;H04R17/10;(IPC1-7):H01L41/04 |
主分类号 |
H04R1/22 |
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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