Keyboard assembly for electronic musical instruments

Details Keyboard assembly for electronic musical instruments Keyboard assembly for electronic musical instruments

1979-01-24

1981-06-09

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

84423R, 84DIG7, H01H 1370, G10C 312

Patent

active

042726573

ABSTRACT:
A keyboard assembly for electronic musical instruments such as electronic pianos is constructed from a key switch unit and a resilient holder block for mounting the key switch unit to a key frame via simple snap coupling. The key switch unit includes a resiliently deformable movable contact common to all keys in combination with given printed circuits including a plurality of fixed contacts so that, when any key is depressed, the movable contact is locally depressed by an actuator accompanying the key and brought into provisional contact with a corresponding fixed contact in order to selectively switch on a corresponding printed circuit for generation of a musical tone.

REFERENCES:
patent: 3251923 (1966-05-01), Lund
patent: 3657460 (1972-04-01), Cutler
patent: 3797357 (1974-03-01), Thomas et al.
patent: 4186638 (1980-02-01), Iijima

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