Acoustical sound proofing material and methods for...

Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Curvilinear or peaked truss

Reexamination Certificate

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C052S787110, C052S309900, C052S783100

Reexamination Certificate

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10658814

ABSTRACT:
An improved acoustical damping wall (ceiling or floor) or door material comprises a laminar structure having as an integral part thereof one or more layers of viscoelastic material which also functions as a glue and one or more constraining layers, such as metal, cellulose, wood, or petroleum-based products such as plastic, vinyl, plastic or rubber. In one embodiment, standard wallboard, typically gypsum, comprises the external surfaces of the laminar structure; and one or more constraining layers are fabricated between the gypsum exterior. The resulting structure improves the attenuation of sound transmitted through the structure.

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IES 2000 (Jul. 2, 2003) Atlanta.com/product pp. 1-6.
Wayback machine, p. 1 of 1.

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