Sound damping multi-layer structure
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United States of America Patent
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Feb 16, 1993
Grant Date -
N/A
app pub date -
Aug 26, 1991
filing date -
Dec 29, 1989
priority date (Note) -
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Abstract
A sound-absorbing multi-layer structure is disclosed comprising a structural part which is capable of oscillating and a loosely engaging damping sheet, which sheet comprises a flexible material and high material absorption factor and is made up of a heavy sheet with a viscoelastic support layer tightly connected thereto. The support layer comprises a plurality of angularly constructed support elements which are shaped and arranged so that together with the structure which can oscillate and the flexible heavy sheet they form a coherent labyrinth of hollow spaces with acoustically effective cavities.
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