Keyboard apparatus of electronic keyboard instrument

Details Keyboard apparatus of electronic keyboard instrument Keyboard apparatus of electronic keyboard instrument

2007-06-18

2009-06-09

Donels, Jeffrey (Department: 2837)

Music

Instruments

General features

C084S434000, C084S435000, C084S423001

Reexamination Certificate

active

07544876

ABSTRACT:
A keyboard apparatus of an electronic keyboard instrument, which is compact in size and broad in a permissible movable range at the time of receiving a force exerting in a width direction of keys. The keyboard apparatus includes key main bodies each provided with a key-fulcrum function device permitting a key to be pivotable in the key depression/release direction and including a vertical hinge and a left-to-right hinge. The vertical hinge is formed into a thin plate-like piece member extending downward of the key and coupled to a common base end and the left-to-right hinge, which is formed into a thin plate-shaped piece member extending along the longitudinal direction of the key and coupled to a connecting portion that is formed into a plate shape extending downward of the key and coupled to the key main body.

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