Keyboard musical instrument structure

Details Keyboard musical instrument structure Keyboard musical instrument structure

2006-06-13

2006-06-13

Donels, Jeffrey W (Department: 2837)

Music

Instruments

Electrical musical tone generation

Reexamination Certificate

active

07060890

ABSTRACT:
An electronic grand piano comprises a plurality of keys arranged on a keybed, a plurality of actions interlocked with the keys, and an electric circuit unit for performing tone-generation operations based on operations of the actions when the keys are operated. A pair of slide portions, each having an elongated shape, are arranged in parallel and are fixed to outer peripheries of the electric circuit unit. A pair of guide portions are arranged in parallel with respect to a main body of the piano and are loosely engaged with the slide portions. When the electric circuit unit is moved in a prescribed direction relative to the main body, it is automatically stopped and fixed at a prescribed position by means of a fixing structure.

REFERENCES:
patent: 5797573 (1998-08-01), Nasu
patent: 6054641 (2000-04-01), Inoue
patent: 6120000 (2000-09-01), Aeschbach et al.
patent: 6288313 (2001-09-01), Sato et al.
patent: 210390 (1923-07-01), None
patent: 09-179545 (1997-07-01), None
patent: 1997-0017160 (1997-04-01), None
“DGP-2XG Electronic Grand Piano Manual”; Yamaha Corporation; 2001.
Copy of Korean Office Action dated Sep. 28, 2005 (and English translation of same).

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