Keyboard instrument, especially a piano or similar instrument

Details Keyboard instrument, especially a piano or similar instrument Keyboard instrument, especially a piano or similar instrument

1982-02-01

1984-04-24

Franklin, Lawerence R.

Music

Instruments

General features

84471R, 84472, 84473, 84480, G10C 312, G10G 102

Patent

active

044440839

ABSTRACT:
Keyboard instrument, in particular a piano or similar instrument that has keys and that can be used in conjunction with aids to learning in the form of templates, characterized in that, of the white keys (long keys 2) that form the C-major scale, the width (b) of the keys that produce the notes B, C, E, and R is 1/4 less than the width (B) of the remaining keys, which produce the notes D, G, and A, so that the ratio of the width of the equally wide keys for B, C, E, and F to the width of the equally wide keys for D, G, and A is 3:4. Templates that are separated into a number of adjacent divisions (5) that are equally wide, each division (5) being 1/2 the width (b) of one D, G, or A key, so that three adjacent divisions (5) will be as wide as two B, C, E, or F keys and two divisions (5) will be as wide as one D, G, or A key can be placed over the keyboard to represent all possible scales, thirds, triads, and tetrads with their inversions, major and minor intervals, cadenzas, transpositions, etc.

REFERENCES:
patent: 362333 (1887-05-01), Tayoux
patent: 2028809 (1936-01-01), Shannon
patent: 2497364 (1950-02-01), Mayberry
patent: 2885921 (1959-05-01), Goldhammer
patent: 3165022 (1965-01-01), Yokoyama
patent: 3460426 (1969-08-01), Jensen
patent: 4091702 (1978-05-01), Murakami

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