Acoustical board

Details Acoustical board Acoustical board

1974-08-16

1976-11-16

Hix, L. T.

Acoustics

Auditorium

428138, E04B 199

Patent

active

039918483

ABSTRACT:
This invention is a new and unique acoustical board formed of fire retardant materials which board has the unique qualities of being fire retardant, sound absorbing, heat insulating, and decorative, and may be formed virtually in any desired size and shape. It is composed of fiberglass reinforced melamine resin panels or the like having one grooved surface covered by fiberglass cloth with perforations suitable to admit sound waves into the grooved areas of the underlying board in such manner as to trap, and debilitate such sound waves therein.

REFERENCES:
patent: 2984312 (1961-05-01), Brisley
patent: 3002868 (1961-10-01), Bivin
patent: 3141804 (1964-07-01), Di Maio et al.
patent: 3269484 (1966-08-01), Lighter
patent: 3384199 (1968-05-01), Eckel
patent: 3433322 (1969-03-01), Olsson
patent: 3525417 (1970-08-01), Giraudeau
patent: 3770560 (1973-11-01), Elder

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