Sound-absorbing cover element as a component in a gap-free acous

Details Sound-absorbing cover element as a component in a gap-free acous Sound-absorbing cover element as a component in a gap-free acous

1988-12-06

1991-10-22

Bell, James J.

Acoustics

Sound-modifying means

Sound absorbing panels

181288, 181291, 428131, 428134, 428137, 428138, 428284, 428285, 428703, E04B 1343

Patent

active

050587056

ABSTRACT:
A sound-absorbing cover element for use as a component in a gap-free acoustic cover including a perforated plate (22) covered on its side facing an enclosed space with a layer (24) of nonwoven fiber material which covers the perforations. The plate is lined on its side facing away from the enclosed space with a sound-inhibiting layer (28) covered on its side facing away from the perforated plate (22) with a cover film (30) which is impermeable to air.

REFERENCES:
patent: 4219376 (1980-08-01), Roman
patent: 4657610 (1987-04-01), Komatsu et al.
patent: 4917933 (1990-04-01), Schluter

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