发明名称 |
Sound systems for model railroad locomotives |
摘要 |
On-board model railroad speaker enclosure designs are presented that isolate back and front speaker waves. In one example, a first speaker may be disposed inside of a model steam locomotive tender, and a second speaker disposed inside of the model steam locomotive. Bass sounds and mid-range sounds may be separately directed to the first and second speakers, and isolated from mixing with one another.
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申请公布号 |
US8166887(B2) |
申请公布日期 |
2012.05.01 |
申请号 |
US201113152657 |
申请日期 |
2011.06.03 |
申请人 |
SEVERSON FREDERICK E.;QS INDUSTRIES, INC. |
发明人 |
SEVERSON FREDERICK E. |
分类号 |
A63H19/00;A47B81/06;G08B1/00;G10K1/00 |
主分类号 |
A63H19/00 |
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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