Piano plate

Details Piano plate Piano plate

1977-03-04

1979-03-20

Hix, L. T.

Music

Instruments

Stringed

G10C 308

Patent

active

041447921

ABSTRACT:
A piano plate is provided, preferably on the top surface thereof, with a fine rugged pattern comprised of a number of shallow recesses of various shapes and dimensions for betterment of its resonance characteristics responding to vibrations of a wide variety of frequencies, particularly to vibrations in the treble range, and, when required, for enrichment of aesthetic effect. The vacuum process is advantageously used for manufacturing thereof thanks to its smooth flow of molten metal at casting and easy removal of the cast product from the associated mold.

REFERENCES:
patent: 1703168 (1929-02-01), Powers
patent: 2570102 (1951-10-01), Crippen, Sr.
patent: 3191293 (1965-06-01), Wickham
patent: 3472112 (1969-10-01), Taguchi et al.
patent: 3562027 (1971-02-01), Takamura et al.

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