Lightweight sound absorbent panels having high noise reduction c

Details Lightweight sound absorbent panels having high noise reduction c Lightweight sound absorbent panels having high noise reduction c

1975-12-03

1977-11-08

Franklin, Lawrence R.

Acoustics

Sound-modifying means

Sound absorbing panels

52239, 160351, 181287, 181290, 181295, E04B 274

Patent

active

040571238

ABSTRACT:
A lightweight sound absorbing panel is disclosed. The panel comprises front and rear faces mounted to a supporting frame and having a core therebetween. The core is at least partially free airspace throughout a substantial portion of the area of the panel whereby weight reduction and increased sound absorption are obtained.

REFERENCES:
patent: 1703011 (1929-02-01), Mazer
patent: 2085436 (1937-06-01), Maurer
patent: 2116270 (1938-05-01), LeGrand
patent: 2177393 (1939-10-01), Parkinson
patent: 3159235 (1964-12-01), Young et al.
patent: 3713474 (1973-01-01), Orlando
patent: 3713508 (1973-01-01), Eckel
patent: 3949827 (1976-04-01), Witherspoon

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