Keyboard musical instrument performable without noise in silent mode
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United States of America Patent
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Sep 2, 1997
Grant Date -
N/A
app pub date -
Apr 10, 1996
filing date -
Apr 14, 1995
priority date (Note) -
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Abstract
A keyboard musical instrument is fabricated on the basis of an acoustic piano, and a hammer stopper and solenoid-operated actuators are provided for hammer assemblies and black and white keys; and a controller instructs the solenoid-operated actuators to move the black and white key at different velocities depending upon the position of the hammer stopper, and causes the acoustic piano to give little offense to the ear at a blocking position of the hammer stopper.
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