| 发明名称 |
Underwater acoustic wave transmitting and receiving unit. |
| 摘要 |
<p>An underwater acoustic wave transmitting and receiving unit has a plate-shaped polarized piezoelectric resonator formed of at least one plate (11) made of a complex of fluorosilicon rubber and lead titanate. The resonator is sealed in a rubber casing 131,32) filled with an insulating liquid (5) matching, in acoustic impedance, water in which the unit is to be submerged.</p> |
| 申请公布号 |
EP0162618(A2) |
申请公布日期 |
1985.11.27 |
| 申请号 |
EP19850303058 |
申请日期 |
1985.04.30 |
| 申请人 |
NGK SPARK PLUG CO. LTD. |
发明人 |
OGURA, KOJI C/O NGK SPARK PLUG CO., LTD;SOBUE, HIDEO C/O NGK SPARK PLUG CO., LTD |
| 分类号 |
H04R1/44;B06B1/06;H01L41/18;H04R17/00;(IPC1-7):H04R17/00 |
主分类号 |
H04R1/44 |
| 代理机构 |
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代理人 |
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