发明名称 |
Electromagnetic sound generator |
摘要 |
A case is formed by an upper case and a lower case, and a buzzer is provided in the case. Two coil springs are securely mounted in holes formed in the lower case. A lower portion of the coil spring is projected from an underside of the lower case. A pair of leads electrically connect both ends of the coil to the coil springs, respectively.
|
申请公布号 |
US6023518(A) |
申请公布日期 |
2000.02.08 |
申请号 |
US19990293804 |
申请日期 |
1999.04.19 |
申请人 |
CITIZEN ELECTRONICS CO., LTD. |
发明人 |
KUWABARA, ATSUSHI;ASAHINA, MASATO |
分类号 |
H04R13/02;H04R11/02;(IPC1-7):H04R25/00 |
主分类号 |
H04R13/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|