| 发明名称 |
HIGH OUTPUT AUDIBLE ALARM DEVICE UTILIZING A PIEZOELECTRIC TRANSDUCER |
| 摘要 |
<p>An audible alarm device comprises solid-state amplifier drive circuit cooperating with a piezoelectric transducer to convert electrical energy into sound energy. An acoustical loading means, such as a horn, effectively transmits the sound to the air.</p> |
| 申请公布号 |
CA1031450(A) |
申请公布日期 |
1978.05.16 |
| 申请号 |
CA19740208664 |
申请日期 |
1974.09.06 |
| 申请人 |
P. R. MALLORY & CO. INC. |
发明人 |
SWEANY, LOUIS P.;PIRTLE, JAMES D. |
| 分类号 |
G08B23/00;B06B1/02;G08B3/10;G08B25/14 |
主分类号 |
G08B23/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
