Solid body capable of vibration and/or reflection in devices and

Details Solid body capable of vibration and/or reflection in devices and Solid body capable of vibration and/or reflection in devices and

1994-03-08

1996-12-17

Spyrou, Cassandra C.

Music

Instruments

Stringed

84291, 84307, 84309, G10D 100

Patent

active

055855792

ABSTRACT:
A vibrating body for producing vibrations in the audible frequency range, has a non-uniform thickness and comprises a sound board having an axis. A first series of areas of reduced thickness is formed on the sound board at different distances from the axis and from each other. A first one of the areas of reduced thickness is spaced apart from a second one of the areas of reduced thickness by a first distance. The second area of reduced thickness being spaced apart from a third one of the areas of reduced thickness by a second distance. The third area of reduced thickness being spaced apart from a fourth one of the areas of reduced thickness by a third distance. The first distance and the second distance and the third distance vary in a harmonic progression.

REFERENCES:
patent: 572897 (1896-12-01), Howe
patent: 605942 (1898-06-01), White
patent: 3691891 (1972-09-01), Delu
patent: 4144792 (1979-03-01), Maehara
patent: 4667559 (1987-05-01), Plesua

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