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US 6,107,552 AGranted
Soundboards and stringed instruments
AssigneeKuau Technology, Ltd.
InventorsAshvin R. Coomar, John A. Decker, Jr.
Life of this patent
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Abstract
A stringed instrument soundboard is provided, including composite structure that includes first and second opposed layers of a stiffened graphite sheet material and a low-density core material interposed between the first and second opposed layers. Methods of making the soundboard and stringed instruments including the soundboard are also provided.
Claims20
A stringed instrument soundboard comprising
- a composite structure, comprising first and second opposed layers of a stiffened graphite sheet material and a low-density core material interposed between the first and second opposed layers.
A stringed instrument comprising
- a self-supporting soundboard formed of a composite material comprised of first and second layers of a stiffened graphite sheet material and a low-density core material interposed between the layers;
- strings extending along the length of said soundboard;
- and
- a hollow stringed instrument body on which said soundboard is mounted;
- wherein said soundboard has sufficient structural integrity to permit it to be attached to the hollow body of the stringed instrument to form a sound box, without requiring bracing.
2 more elements
A stringed instrument soundboard comprising
- a composite structure, comprising first and second opposed layers of an epoxy resin-impregnated woven graphite sheet material and a rigid low-density foam core material interposed between the first and second opposed layers,
- wherein said soundboard has a thickness of less than 5 mm, sufficient structural integrity to withstand normal use in said stringed instrument without additional bracing, and a density of less than 0.25 g/cm.sup.3.
A stringed instrument comprising
- a hollow body having a perimeter edge that defines an open side,
- a self-supporting soundboard attached to the body along the perimeter edge to form a soundbox, and
- strings lying adjacent to the soundboard,
- the soundboard being formed of a composite material comprised of layers of a stiffened graphite sheet material and a low-density core material interposed between the layers,
- the soundboard spanning the open side and supporting itself without structural support by any bracing element.
2 more elements
Dependencies are inferred from the claim text.