Keyboard for musical instrument

Details Keyboard for musical instrument Keyboard for musical instrument

1980-06-25

1983-12-06

Fuller, Benjamin R.

Music

Instruments

General features

84DIG7, 200 5R, G10C 312

Patent

active

044186053

ABSTRACT:
A keyboard for a musical instrument having a frame structure and a plurality of elongated keys. Flat pivot springs are provided for each key and are rigidly held in a vertical position in the frame structure. Each key has a chamber with a lower opening in a rear section for receiving the upper section of an associated pivot spring so that the pivot spring forms the sole pivot about which the key may rotate in a single plane only. The pivot spring is rigidly held in the key chamber in a force fit without the use of a separate fastening device.

REFERENCES:
patent: 2117002 (1938-05-01), Hammond
patent: 2253782 (1941-08-01), Hammond et al.
patent: 2844065 (1958-07-01), Corwin
patent: 2848920 (1958-08-01), Lester
patent: 3110211 (1963-11-01), Elbrecht
patent: 3173329 (1965-03-01), Camillucci
patent: 3248992 (1966-05-01), Wood et al.
patent: 3616722 (1971-11-01), Hochleitner, Jr.
patent: 3657460 (1972-04-01), Cutler
patent: 3738216 (1973-06-01), Slaats et al.
patent: 3911233 (1975-10-01), Nakamura et al.
patent: 3911780 (1975-10-01), Pyle et al.
patent: 4043244 (1977-08-01), Schrecongost et al.
patent: 4129057 (1978-12-01), Hoshi

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