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United States of America Patent
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Jun 6, 2006
Grant Date -
Sep 16, 2004
app pub date -
Feb 9, 2004
filing date -
Feb 28, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An action in an acoustic piano is provided which can reproduce the touch and feel of the key depression generated in a normal performance mode even in a silent performance mode. The acoustic piano is capable of being switched between the normal performance mode and the silent performance mode. In the silent performance mode, a rotation lever of a transmission switching mechanism disconnects the hammer operating portion from the key. A load switching mechanism is rotated to lower the tip of a weight lever to abut directly upon the upper face of the key. Then, the weight lever swings up and down corresponding to the key depression of a player, closely reproducing the touch and feel of a conventional acoustic piano.
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