发明授权
US5874687A Keyboard instrument having hammer stopper outwardly extending from
hammer shank and method of remodeling piano into the keyboard instrument
失效
具有从锤柄向外延伸的锤塞的键盘乐器和将钢琴重新配置到键盘乐器中的方法
- 专利标题： Keyboard instrument having hammer stopper outwardly extending from hammer shank and method of remodeling piano into the keyboard instrument
- 专利标题（中）： 具有从锤柄向外延伸的锤塞的键盘乐器和将钢琴重新配置到键盘乐器中的方法
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申请号： US318979申请日： 1994-10-06
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公开(公告)号： US5874687A公开(公告)日： 1999-02-23
- 发明人: Kiyoshi Kawamura
- 申请人： Kiyoshi Kawamura
- 申请人地址： JPX Hamamatsu
- 专利权人： Yamaha Corporation
- 当前专利权人： Yamaha Corporation
- 当前专利权人地址： JPX Hamamatsu
- 主分类号： G10C3/16
- IPC分类号： G10C3/16 ; G10C5/00 ; G10H1/34 ; G10C3/00 ; G10C3/18
摘要：
a stopper, a driver unit, key and pedal sensors, a sound processing unit and a sound system are installed in an acoustic piano so as to remodel the acoustic piano into a keyboard musical instrument performable with either acoustic or electronic sounds.
公开/授权文献
- US4396727A Cation exchange membrane and process for producing the same 公开/授权日：1983-08-02
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