发明名称 |
HAUT-PARLEUR DYNAMIQUE POUR ALARMES |
摘要 |
<p>A loudspeaker for an alarm system consists of a frusto-conical diaphragm 1 fixed at its periphery 2 to a support casing 4 and a domed diaphragm 5 placed between the casing 4 and a motor unit 11 with the domed part extending through a central opening 7 in the casing 4 and partly extending into the frusto-conical diaphragm 1, which is joined to the domed diaphragm in the region of the smaller end of the frusto- conical diaphragm, so that the dome is partially lodged in the interior of the frusto-conical diaphragm 1. <IMAGE></p> |
申请公布号 |
FR2595497(B1) |
申请公布日期 |
1992.09.04 |
申请号 |
FR19870001955 |
申请日期 |
1987.02.16 |
申请人 |
PLASTMETAL SA |
发明人 |
VINALLONGA PEDRO ALTIMIRA |
分类号 |
H04R7/12;H04R7/18;(IPC1-7):G10K9/13;H04R9/18 |
主分类号 |
H04R7/12 |
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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