发明名称 |
SCHALLABSORBIERENDES BAUELEMENT UND VERWENDUNG DESSELBEN IM HOCH-,TIEF-, TUNNEL- UND FAHRZEUGBAU |
摘要 |
A sound-absorbing element of films has adjacent, cup-shaped recesses in the form of a grid. The bottom surfaces of the films which are to be exposed to the sound field may be excited into dissipative vibrations when sound is incident thereon. The upper edges of the cup-shaped recesses are jointly covered by another flat material web. The bottom surfaces of the cup-shaped recesses are subdivided into bases by one or more crimp-shaped recesses, the depth of which is appreciably smaller than the depth of the cup-shaped recesses. The sound-absorbing element may be used in building, underground and tunnel construction and in vehicle construction. |
申请公布号 |
SE8304698(D0) |
申请公布日期 |
1983.08.31 |
申请号 |
SE19830004698 |
申请日期 |
1983.08.31 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN F..;EWALD DORKEN GMBH & CO KG |
发明人 |
1)D * JABLONKA;2)K * URBAN;3)H-P * RAIDT;4)E * SCHEPERS |
分类号 |
G10K11/172 |
主分类号 |
G10K11/172 |
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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