Surface element and a device for generating sound
OwnerLars Stahlinventor
Life of this patent
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Abstract
A surface element for a device for generating sounds by influencing opposite extremities of a surface element to oscillate from and towards each other and thereby the surface element to oscillate transversely thereto and generate sounds has at least a portion formed in the thickness direction thereof by at least two first layers (12) and an intermediate layer (13) having a lower average density than the density of the two first layers.
Claims32
A surface element for a device for generating sound by influencing opposite ends (8, 9) of the surface element to oscillate from and towards each other, thereby making the surface element oscillate transversely thereto and generate sound, characterized in that at least a portion thereof is formed in the thickness direction thereof by at least two first layers (12, 12') and an intermediate layer (13, 13') having a lower average density than the density of the two first layers.
A device for generating sound, which comprises a surface element (5) in which two opposite ends (8, 9) are intended to be connected to a piece (6) each, and a driving unit (7) arranged to influence said pieces and thereby the ends of the surface element to oscillate from and towards each other and thereby the surface element to oscillate transversely thereto and generate sound, characterized in that at least one portion of said surface element is formed in the thickness direction thereof by two first layers (12, 12') and an intermediate layer (13, 13') with a lower average density than the density of said two first layers.
Dependencies are inferred from the claim text.