Keyboard apparatus

Details Keyboard apparatus Keyboard apparatus

2008-10-16

2009-10-20

Lockett, Kimberly R (Department: 2837)

Music

Instruments

General features

Reexamination Certificate

active

07605319

ABSTRACT:
A keyboard apparatus100has plural keys10and11, plural electronic actuators30, and plural link mechanisms40. Each of the keys10and11extends in the longitudinal direction, and pivots in the vertical direction about a support C1by the operation of depressing the keys and the operation of releasing the keys. Each of the electronic actuators30has a movable member31that displaces in the vertical direction in interlocking with the pivot movement of each of the keys, and applies a reaction force against the operation of depressing the keys10and11. Each of the link mechanisms40links each of the keys10and11and the movable member of each of the electronic actuators30in such a manner that power can be transmitted. Each of the link mechanisms40has a plate-like first fixing portion41that is fixed to each of the keys, a plate-like second fixing portion42that is connected to each of the movable members31, and plural spherical fine grains43filled in a gap between the first fixing portion41and the second fixing portion42.

REFERENCES:
patent: 3068334 (1962-12-01), Gibbs et al.
patent: 6894211 (2005-05-01), Asahi
patent: 4057093 (1992-02-01), None
patent: 10020857 (1998-01-01), None

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