Piano action keyboard with roller and elastic diaphragm transduc

Details Piano action keyboard with roller and elastic diaphragm transduc Piano action keyboard with roller and elastic diaphragm transduc

1979-02-27

1981-06-16

Witkowski, Stanley J.

Music

Instruments

84 127, 84DIG7, 200 5A, 200 16A, 200277, 340365A, G10H 102, G10H 134

Patent

active

042730171

ABSTRACT:
A piano action keyboard for an electronic musical instrument or the like wipes a switch actuator (or other mechanical component of electric signal translation means) across switch contacts on a printed circuit board to generate signals indicative of the position and motionof a key when played. The keyboard provides a highly realistic piano "feel" through an array of paired depressable playing keys and arms. Each such arm supports a switch actuator or the like, with varying force transmission at different stages of depression of its corresponding key, the overall electrical-mechanical combination affording a response in terms of both actual results and kinesthetic feedback simulating a manual piano action.

REFERENCES:
patent: 3694606 (1972-09-01), Harris et al.
patent: 3854018 (1974-12-01), Reynolds et al.
patent: 4007364 (1977-02-01), Ojima et al.
patent: 4044642 (1977-08-01), Pearlman et al.
patent: 4217803 (1980-08-01), Dodds

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