Component for airborne-sound insulation
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United States of America Patent
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Apr 10, 1984
Grant Date -
N/A
app pub date -
Aug 11, 1980
filing date -
Dec 11, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A plate-component (1) which can be used for airborne-sound insulation has chambers (5, 6) filled with a pulverulent or granular, e.g. metallic material, whose chamber walls (2, 3, 4) at least partly are formed by a flexible material. Chambers (5, 6) are small in the vertical direction, but in the horizontal direction can form long channels. This construction not only leads to an increase in the sound insulation of a board joined to component 1 corresponding to an increase in the weight per unit area, but it is also possible to prevent coincidence breakdowns in the range 100-3000 Hz.
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