Keyboard apparatus

Details Keyboard apparatus Keyboard apparatus

2005-05-17

2005-05-17

Hsieh, Shih-Yung (Department: 2837)

Music

Instruments

General features

C084S431000, C084S432000, C084S427000, C084S176000

Reexamination Certificate

active

06894211

ABSTRACT:
There is provided a keyboard apparatus which has a high durability, portability, and operability, and facilitates adaptation to a wide range of musical scenes and to multi-model production. Each adjacent pair of four main cases are pivotally connected to each other via connecting portions, whereby the main cases are allowed to assume a folded position which enables the keyboard apparatus to be carried with ease, and a flat unfolded position in which the keyboard can be played. Each main case has a keyboard unit arranged therein. Three main cases for lower tone ranges each have four white keys arranged therein, and a main case for a highest tone range has three white keys arranged therein, and a total of25keys are arranged on the keyboard apparatus. The main case for the highest tone range also has a group of operating elements arranged therein.

REFERENCES:
patent: 3750516 (1973-08-01), Olson
patent: 3797357 (1974-03-01), Thomas et al.
patent: 4378881 (1983-04-01), de Vries
patent: 5463925 (1995-11-01), Galocy
patent: 6259006 (2001-07-01), Parienti
patent: 61-76493 (1986-05-01), None

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