Device to identify chords on a keyboard instrument and key mecha

Details Device to identify chords on a keyboard instrument and key mecha Device to identify chords on a keyboard instrument and key mecha

1976-02-10

1977-12-06

Franklin, Lawrence R.

Music

Accessories

Teaching devices

74483PB, 200 5E, G09B 1502

Patent

active

040610721

ABSTRACT:
Operation of a pushbutton or key mechanism by the operation of a single pushbutton or key through circuitry which may include fiber optics signals all keys on the keyboard included in the particular chord. The device may be built in or simply attached to the keyboard instrument. The keys are spring, and string or wire operated to return a key to its inoperative position when the next key is pressed down.

REFERENCES:
patent: 2820391 (1958-01-01), Janssen et al.
patent: 3335630 (1967-08-01), Schmoyer
patent: 3415152 (1968-12-01), Gullickson
patent: 3958487 (1976-05-01), Goldman

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