Upright keyboard musical instrument

Details Upright keyboard musical instrument Upright keyboard musical instrument

2007-11-27

2007-11-27

Donovan, Lincoln (Department: 2837)

Music

Instruments

Stringed

C084S172000

Reexamination Certificate

active

11090578

ABSTRACT:
An upright keyboard musical instrument has an open/close board attached to the top position of a case, wherein the lower surface of the open/close board is subjected to mirror surface finishing and is supported by a lid prop, which is rotatably arranged in proximity to the top board to rotate about a support axis and is formed in an L-shape to have a plurality of support surfaces, realizing different angles for the open/close board being opened. The mirror surface of the open/close board projects images representing internal members of the case, such as an emblem and actions. By appropriately rotating the lid prop, it is possible to realize a desired angle for the open/close board, thus realizing tone volume control and visually entertaining effects in musical performance.

REFERENCES:
patent: 3969970 (1976-07-01), Swift et al.
patent: 5818360 (1998-10-01), Chu et al.
patent: 11-305761 (1999-11-01), None

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