发明公开
EP0901117A3 Keyboard musical instrument having fall-board assembled with case by means of Oldham's coupling
有权
Tastatur-Musikinstrument mit Klavierdeckel verbunden mit dem Gehause mittels einem Oldhamskopplung
- 专利标题： Keyboard musical instrument having fall-board assembled with case by means of Oldham's coupling
- 专利标题（中）： Tastatur-Musikinstrument mit Klavierdeckel verbunden mit dem Gehause mittels einem Oldhamskopplung
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申请号： EP98114832.3申请日： 1998-08-06
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公开(公告)号： EP0901117A3公开(公告)日： 2001-09-26
- 发明人: Inoue, Satoshi c/o Yamaha Corporation
- 申请人： YAMAHA CORPORATION
- 申请人地址： 10-1, Nakazawa-cho Hamamatsu-shi, Shizuoka-ken 430-8650 JP
- 专利权人： YAMAHA CORPORATION
- 当前专利权人： YAMAHA CORPORATION
- 当前专利权人地址： 10-1, Nakazawa-cho Hamamatsu-shi, Shizuoka-ken 430-8650 JP
- 代理机构： Geyer, Ulrich F., Dr. Dipl.-Phys.
- 优先权： JP21188097 19970806
- 主分类号： G10C3/02
- IPC分类号： G10C3/02
摘要：
An upright piano includes a fall-board (12) hinged to a upper sill (10f) and connected through a pair of flexible coupling (13) to side arms (10b), and each of the flexible couplings has a rotary damper (13b) embedded in the side arm and an Oldham's coupling (13a/ 13c/ 13q) connected between the fall-board and the rotary damper so that the Oldham's couplings take up misalignment between the rotational axis (AX1) of the fall-board and the rotational axes (AX2) of the rotary dampers.
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