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US 5,457,291 AGranted
Sound-attenuating panel
OwnerBrian E. Richardsoninventor
Life of this patent
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Abstract
Acoustic resonator means are embodied through successive stages of molding. A first stage pre-forms resonator enclosures without solid forms inside. After resonator enclosures have been pre-formed they advance to a second stage. A jig form molds pre-formed resonator bulbs and concrete together in a panel molding region to form a resonator panel.
Claims7
Sound panel means formed of:
- a plurality of Helmholtz resonator bulb means, each comprising a first material with
- an outer side having a molding surface bounded by an edge which circumscribes a port area, and
- an inner side having a resonator surface bounded by said edge and recessed along an axis from said port area into said material,
- said plurality of resonator bulb means being disposed so that their respective port areas are separately coincident in a sound-receiving front face surface;
- and
- body means comprising a second material disposed between said sound-receiving front face surface and said molding surfaces.
3 more elements
Dependencies are inferred from the claim text.