Action for electronic piano

Details Action for electronic piano Action for electronic piano

1980-10-27

1983-03-01

Franklin, Lawrence R.

Music

Instruments

General features

84435, 84467, G10C 312

Patent

active

043751792

ABSTRACT:
A piano action is provided for an electronic piano. Tones are generated electronically, but the action retains the feel of a conventional piano action without the necessity of a hammer or hammer-like member. The piano key is provided with a rounded, convex shoulder which presses against a rounded, convex surface on a lever. The two convex surfaces are configured and positioned so that one slides over the other to provide the feel of let-off of a conventional piano action. The lever is spring-biased by means of two different springs to rest position, and acts to move a spring wire contact from a first bus to a second bus.

REFERENCES:
patent: Re27015 (1970-12-01), Dijksterhuis
patent: 1510663 (1924-10-01), Finnimore
patent: 2338992 (1944-01-01), Bilhuber
patent: 2436875 (1948-03-01), Socin
patent: 2542308 (1951-02-01), Brown
patent: 2684006 (1954-06-01), Stein
patent: 2866371 (1958-12-01), Stein
patent: 3735076 (1973-05-01), Iijima
patent: 4091702 (1978-05-01), Murakami

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