Piano key covers formed of ivory substitute and pianos having sa

Details Piano key covers formed of ivory substitute and pianos having sa Piano key covers formed of ivory substitute and pianos having sa

1990-05-18

1993-02-02

Gellner, Michael L.

Music

Instruments

General features

84452P, G10C 312

Patent

active

051839555

ABSTRACT:
A piano key cover is formed of synthetic material pigmented to resemble natural ivory and having a top playing surface with a random orientation of peak-to-valley texture and a multiplicity of fine pores replicating natural ivory. The key cover is formed by providing a mold, engraving a surface of the mold with a randomly-oriented pattern of peak-to-valley texture replicating natural ivory, placing in the mold a composition of suitable synthetic material pigmented to resemble natural ivory and filler, the filler having the characteristic of being removable from a molded article by further treatment, forming the piano key cover within the mold, and treating the piano key cover to remove the filler thereby causing the surface of the paino key cover to define a plurality of fine pores replicating the surface of natural ivory. A piano including the key cover of the invention, and formed by the above method, is also described.

REFERENCES:
patent: 174000 (1976-02-01), Pratt
patent: 271120 (1983-01-01), Rikeman
patent: 2844065 (1958-07-01), Corwin
patent: 3031910 (1962-05-01), Lofaro
patent: 3032455 (1962-05-01), Fauser
patent: 3060074 (1962-10-01), Good
patent: 4346639 (1982-08-01), Vagias
patent: 4419921 (1983-12-01), Simanski
patent: 4840104 (1989-06-01), Ishida et al.

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