Soundproofing assembly for an automobile, and associated wall element
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United States of America Patent
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Apr 15, 2014
Grant Date -
Feb 16, 2012
app pub date -
Feb 19, 2010
filing date -
Feb 20, 2009
priority date (Note) -
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Abstract
The assembly comprises a base spring layer made with a base of a resilient porous material, and the base spring layer being intended to be placed opposite a surface of the automobile. It comprises a stiffening layer arranged above the base spring layer and having a surface density greater than 250 g/m2 and at least one resilient porous upper layer arranged on the stiffening layer. The stiffening layer is made with a base of a dense porous material having a resistance to air flow strictly greater than 2000 N·m−3·s. The assembly advantageously has an upper resistive layer.
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