发明名称 |
Composite diaphragm for speaker |
摘要 |
A composite diaphragm for a speaker comprises a boron layer formed on a metal foil such as titanium foil, in which a layer of a low melting point metal such as aluminum or magnesium is interposed between the metal foil and the boron layer to provide high rigidity, high elasticity and high bonding strength between the metal foil and the boron layer.
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申请公布号 |
US4216271(A) |
申请公布日期 |
1980.08.05 |
申请号 |
US19770848316 |
申请日期 |
1977.11.03 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD |
发明人 |
INOUE, HIDEAKI;ISHIWATARI, KEIZO;KAWABATA, HIDETSUGU;TAKEUCHI, HIROSHI |
分类号 |
H04R7/02;B32B9/00;H04R7/12;(IPC1-7):H04R7/12 |
主分类号 |
H04R7/02 |
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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