Acoustic absorber and method for absorbing sound

Details Acoustic absorber and method for absorbing sound Acoustic absorber and method for absorbing sound

1978-04-21

1979-05-01

Van Balen, William J.

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156 71, 181291, 428246, 428251, 428284, 428285, 428286, 428332, 428340, 428422, E04B 174, E04B 199, B32B 310

Patent

active

041524748

ABSTRACT:
An acoustic absorber and a method for absorbing sound utilize a substrate having a plurality of openings therethrough. An organic polymer coating covers the substrate and partially fills the openings in the substrate to form an acoustic absorber having a porosity not greater than 60 CFM/ft.sup.2.

REFERENCES:
patent: 2071865 (1937-02-01), Parsons
patent: 2907677 (1959-10-01), Hochberg
patent: 3844875 (1974-10-01), Chamberlain
patent: 3954540 (1976-05-01), Chamberlain
patent: 3966013 (1976-06-01), Hatch et al.
patent: 3966522 (1976-06-01), Hatch et al.
patent: 3968297 (1976-07-01), Sauer
patent: 3977492 (1976-08-01), Hankel
patent: 3994363 (1976-11-01), Hiras et al.
2,263,700 Offenlegungschrift, (7-1974), W. Germany, 1 sht. dwg., 7 pp. spec.

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