发明名称 |
Audio diaphragm mounting arrangements in radio telephone handsets |
摘要 |
A radio telephone handset including a housing for retaining an audio diaphragm means, the housing having an aperture therein for receiving the diaphragm means, the diaphragm co-operating with the housing to define a substantially sealed chamber, the arrangement being such that an inward face of the audio diaphragm means is enclosed by the substantially sealed chamber and is thereby substantially acoustically isolated from a outward face of the diaphragm.
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申请公布号 |
US6266516(B1) |
申请公布日期 |
2001.07.24 |
申请号 |
US19990268082 |
申请日期 |
1999.03.12 |
申请人 |
NOKIA MOBILE PHONES LIMITED |
发明人 |
PALKKI MIKKO;YLI-AYHO JUSSI;NICHOLSON GUY |
分类号 |
H04M1/03;(IPC1-7):H04B1/38 |
主分类号 |
H04M1/03 |
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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