Keyboard musical instrument with movable key bed for performing music without acoustic sounds
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United States of America Patent
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Aug 13, 1996
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N/A
app pub date -
Nov 22, 1994
filing date -
Nov 30, 1993
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Abstract
A keyboard musical instrument lowers a key bed together with a keyboard, key action mechanisms and hammer mechanisms in a silent mode, and a stopper mechanism and a make-up mechanism cause the depressed keys to actuate the key action mechanisms and damper mechanisms as similar to an acoustic sound mode, thereby allowing a player to feel the key touch usual in a performance without an acoustic sound.
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