Acoustics – Sound-modifying means – Sound absorbing panels
Patent
1990-08-16
1991-04-02
Fuller, Benjamin R.
Acoustics
Sound-modifying means
Sound absorbing panels
181288, 181292, 181293, E04B 182
Patent
active
050040707
ABSTRACT:
This invention relates to an acoustic board and in particular to one which includes a framework, a front panel formed with a plurality of openings and fitted on one side of the framework, a rear panel fitted on the other side of the framework thereby forming a space between the front panel and the rear panel, a plurality of sound collecting cylinders each fitted with an opening of the front panel and having an open end at the same side of the front panel, and a plurality of silencers formed with a plurality of perforations and embedded into the other end of the sound collecting cylinder.
REFERENCES:
patent: 2308817 (1943-01-01), Richard
patent: 4600078 (1986-07-01), Wiort
Fuller Benjamin R.
Klein David I.
Rosenberg Morton J.
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