发明名称 |
PISTON LOUDSPEAKER |
摘要 |
<p>An electroacoustic loudspeaker having a rigid, light-weight diaphragm and a substantially closed loop magnet support of a magnetically permeable material having a channel-shaped cross-section and supported adjacent and spaced from the diaphragm with the open side of the channel facing the diaphragm. The magnet support carries a pair of magnets magnetized and positioned with opposite poles in spaced facing relation and a voice coil is secured to the diaphragm and lies in the gap between the magnets.</p> |
申请公布号 |
CA1051113(A) |
申请公布日期 |
1979.03.20 |
申请号 |
CA19760258728 |
申请日期 |
1976.08.09 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
KRAWCZAK, WILLIAM G.;MULARIE, WILLIAM M. |
分类号 |
H04R9/02;H04R9/06;(IPC1-7):04R9/06;04R9/02 |
主分类号 |
H04R9/02 |
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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