发明授权
- 专利标题： Keyboard musical instrument having variable contact point between jack and regulation button
- 专利标题（中）： 键盘乐器具有插孔和调节按钮之间的可变接点
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申请号： US413632申请日： 1995-03-30
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公开(公告)号： US5557052A公开(公告)日： 1996-09-17
- 发明人: Hajime Hayashida , Satoshi Inoue
- 申请人： Hajime Hayashida , Satoshi Inoue
- 申请人地址： JPX
- 专利权人： Yamaha Corporation
- 当前专利权人： Yamaha Corporation
- 当前专利权人地址： JPX
- 优先权： JPX6-083726 19940331; JPX6-144139 19940603
- 主分类号： G10F1/02
- IPC分类号： G10F1/02 ; G10C1/04 ; G10C3/16 ; G10H1/34 ; G10C3/18
摘要：
A piano has a regulating button mechanism so as to cause a jack to escape from a hammer assembly, and the regulating button mechanism has a first regulating button and a second regulating button with which the jack is selectively brought into contact; and the jack imparts a force variable in dependence on the regulating button to the hammer assembly so as to generate loud or soft tones.