Sound-absorbing cover element as a component in a gap-free acoustic cover
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United States of America Patent
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Oct 22, 1991
Grant Date -
N/A
app pub date -
Dec 6, 1988
filing date -
Dec 16, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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