Keyboard device and keyboard instrument
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United States of America Patent
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Oct 30, 2018
Grant Date -
Jul 12, 2018
app pub date -
Dec 21, 2017
filing date -
Jan 10, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A keyboard device includes a plurality of hammer members provided corresponding to a plurality of keys, whereby each hammer member applies an action load to a depressed key by rotating in conjunction with the key, and a key load applying member which applies a key load to the key by the hammer member coming in contact therewith when the hammer member is rotated, in which the key load applying member is singly provided corresponding to the plurality of keys, and a first portion of the key load applying member corresponding to a first key and a second portion of the key load applying member corresponding to a second key are different in at least one of thickness, level of elasticity, and level of viscosity.
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