发明授权
- 专利标题: Keyboard of pianos and similar key instruments
- 专利标题(中): 钢琴键盘和类似的钥匙乐器
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申请号: US933224申请日: 1986-11-06
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公开(公告)号: US4756225A公开(公告)日: 1988-07-12
- 发明人: Lars G. Carlsson , Staffan Sjostrand
- 申请人: Lars G. Carlsson , Staffan Sjostrand
- 专利权人: Carlsson Lars G,Staffan Sjostrand
- 当前专利权人: Carlsson Lars G,Staffan Sjostrand
- 优先权: SEX8500218 19850117
- 主分类号: G10C3/12
- IPC分类号: G10C3/12
摘要:
A keyboard of pianos and similar key instruments which has a keyboard frame and a plurality of key arms which are mounted in the keyboard frame in such a way that the key arms only can swing in a plane that is perpendicular to the plane of the keyboard frame. The keyboard frame consists of metal and a vibration absorbing material is arranged between the bearing mechanisms on the key arms and the keyboard frame. This will make the manufacture of the keyboard cheaper and reduce the need of readjustments of the keyboard. The vibration absorbing material is provided in grooves in the keyboard frame, and the bearing means, which can consist of pins are fastened in the vibration absorbing material.