Soundproof structure

Details Soundproof structure Soundproof structure

1976-04-09

1978-03-14

Ansher, Harold

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

181286, 252 62, 260 25BE, 260 37EP, 428325, 428357, 428406, 428417, 428913, E04B 199, G10K 1104, C04B 4300

Patent

active

040791629

ABSTRACT:
A structure that is preferably constructed in sheet form and that provides improved sound attenuation with a relatively small thickness. The materials comprising the structure include a myriad of hollow glass microspheres interspersed, preferably by a blending process, into a curable resin base. Improved acoustic attenuation is provided by employing microspheres of the type containing a vacuum and selecting a resin base that has good flexure qualities and is relatively soft with a relatively low indentation hardness.

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patent: 3316139 (1967-04-01), Alford et al.
patent: 3325303 (1967-06-01), Lant et al.
patent: 3616174 (1971-10-01), Atkins
patent: 3632703 (1972-01-01), Sullivan et al.
patent: 3661673 (1972-05-01), Merriam
patent: 3726755 (1973-04-01), Shannon
patent: 3769770 (1973-11-01), Deschamps et al.
patent: 3788937 (1974-01-01), Lee
patent: 3917547 (1975-11-01), Massey

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