MOLDED LIGHTWEIGHT FOAM ACOUSTICAL BARRIER AND METHOD OF ATTENUATING NOISE
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United States of America Patent
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Issued Date -
Jul 8, 2004
app pub date -
Jan 7, 2004
filing date -
Jan 7, 2003
priority date (Note) -
Abandoned
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Abstract
An acoustical barrier comprises a layer of molded firm-flexible foam that is generally configured to match the acoustical requirements in an environment and mounted against a sound-transmitting substrate and can have one or more areas of patterned recesses along a substrate-facing side or varying thickness tailored to the intensity of sound transmitted through the sound-transmitting substrate with or without a thin, impervious barrier layer overlying the foam layer.
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