PIANO INCLUDING DROP ACTION
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United States of America Patent
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Issued Date -
Oct 3, 2024
app pub date -
Mar 27, 2024
filing date -
Mar 31, 2023
priority date (Note) -
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Abstract
A piano including a drop action is provided with an upper first key pivotally movable and a lower second key pivotally supported by a support member and having a front end contacted by the first key. In accordance with depression of the first key, the second key pivotally moves to lift up a wippen of the action via a connection member (wire member), whereby a string is struck by a hammer. The support member has a plurality of support walls formed with bearing grooves which extend obliquely with respect to a vertical direction. The second key includes a pair of shafts protruding toward opposite lateral sides and is pivotally supported by the support member in a state in which the shafts are engaged with bottoms of the bearing grooves formed in each adjacent two support walls.
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