Grand piano action mechanism
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United States of America Patent
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-
Mar 11, 2008
Grant Date -
May 10, 2007
app pub date -
Apr 28, 2005
filing date -
Apr 28, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An action mechanism of a mechanical piano including a wippen accommodated on a wippen rail, a repetition lever with a flange, a jack, a hammer, and a pair of permanent magnets arranged so as to repel each other. The first magnet is attached to the wippen and the second magnet is attached to immovable structure of the piano.
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