Housing structure of electronic keyboard musical instrument

Details Housing structure of electronic keyboard musical instrument Housing structure of electronic keyboard musical instrument

2008-12-17

2010-02-09

Lockett, Kimberly R (Department: 2832)

Music

Instruments

General features

Reexamination Certificate

active

07659470

ABSTRACT:
A housing structure of an electronic keyboard musical instrument, in which a pivotable upper case can be mounted to and dismounted from a lower case when the upper case is in a semi-open state, thereby improving safety and the working efficiency at the time of assembly and maintenance. Pivot coupling parts each include an engagement protrusion comprised of a narrow-width portion and a wide-width portion. An upper case is formed with engagement holes each comprised of a narrow-width counterpart permitting the narrow-width portion to be inserted thereinto and a wide-width counterpart permitting the wide-width portion to be inserted thereinto. By moving the upper case, having a posture thereof corresponding to a mountable/dismountable angle range, in the direction in which the wide-width portions project, the wide-width portions can be inserted into and removed from the wide-width counterparts.

REFERENCES:
patent: 4254684 (1981-03-01), Helpinstill, III
patent: 2004/0182223 (2004-09-01), Kuwahara et al.
patent: 62-103382 (1987-07-01), None
patent: 2003-264381 (2003-09-01), None

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