Automatic player piano exactly reproducing half stroke in playback
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United States of America Patent
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Nov 25, 1997
Grant Date -
N/A
app pub date -
Sep 12, 1996
filing date -
Sep 19, 1995
priority date (Note) -
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Abstract
An automatic player piano controls a solenoid-operated key actuator so as to move a key along a quadratic curve around a turning point where the key changes the direction of the motion, and the solenoid-operated key actuator faithfully reproduce a half stroke key motion.
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