发明名称 SOUND-ABSORBING SHIELDING ELEMENT
摘要 A sound-absorbing shielding element, in particular for fitting into a motor vehicle, comprises a layered construction which has a support plate, an acoustically effective porous absorber layer and at least one acoustically effective first microperforated sheet which is arranged on a first side of the absorber layer. An acoustically effective second microperforated sheet is arranged on the first side of the absorber layer.
申请公布号 US2012279799(A1) 申请公布日期 2012.11.08
申请号 US201113289665 申请日期 2011.11.04
申请人 GRAF JOERG;PROGRESS-WERK OBERKIRCH AG 发明人 GRAF JOERG
分类号 E04B1/82 主分类号 E04B1/82
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