Key covers formed of ivory substitute and pianos having same

Details Key covers formed of ivory substitute and pianos having same Key covers formed of ivory substitute and pianos having same

1992-08-14

1993-11-30

Gellner, Michael L.

Music

Instruments

General features

84452P, G10C 312

Patent

active

052655156

ABSTRACT:
A piano key cover having a body of synthetic material pigmented to resemble natural ivory defines a top playing surface having a random orientation of peak-to-valley texture and a multiplicity of fine pores to replicate a surface of natural ivory. A multiplicity of the pores have diameters generally in the range of 0.0002 to 0.0012 inch (0.005 to 0.030 mm). The synthetic material is selected from the group consisting of acrylic polymer, polyurethane, epoxy and the like. A method for forming such a piano key cover and a piano having key covers of the invention are also described.

REFERENCES:
patent: 174000 (1876-02-01), Pratt
patent: 271120 (1883-01-01), 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: 4508575 (1985-04-01), Oshrima
patent: 4840104 (1989-06-01), Ishida et al.

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