Keyboard device

Details Keyboard device Keyboard device

1986-05-28

1988-02-09

Franklin, Lawrence R.

Music

Instruments

General features

84433, 84467, G10C 312

Patent

active

047234717

ABSTRACT:
In construction of a keyboard device well suited for use on an electronic piano and a piano training device, a combination of a jack element corresponding to a jack on an actual action assembly, an abutment whose force acting on the jack element corresponds to the weight of an actual hammer, and a releaser corresponding to actual regulating button provides key touch very close to that obtained on an actual piano equipped with action assemblies.

REFERENCES:
patent: 506225 (1893-10-01), Hamilton
patent: 2214112 (1940-09-01), Schulze
patent: 2280982 (1942-04-01), Schulze
patent: 3903780 (1975-09-01), Aliprandi
patent: 4375179 (1983-03-01), Schwartz

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