Action of grand piano
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United States of America Patent
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Oct 15, 2019
Grant Date -
N/A
app pub date -
Mar 27, 2019
filing date -
Mar 28, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
An action of a grand piano, which makes it possible to reduce not only the weight of a jack, but also that of a wippen, to thereby improve string striking repeatability. The action includes a wippen of a synthetic resin configured to pivotally move upward by being pushed up by the depressed key, a jack pivotally mounted to the wippen, for pushing up the hammer in accordance with pivotal motion of the wippen to cause the hammer to pivotally move upward, and a jack angular position-adjusting mechanism provided on the wippen to adjust an angular position of the jack. The mechanism has a support portion integrally formed with the wippen, an adjustment screw screwed into the support portion movably in a front-rear direction, and a jack button provided on an end of the adjustment screw for defining the angular position of the jack by abutment therewith.
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