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US5353671A Upright piano with key action mechanism responsive to repetition without double strike and loss of sound 失效
直立钢琴与重要的动作机构响应重复，没有双重打击和声音的损失

  • 专利标题： Upright piano with key action mechanism responsive to repetition without double strike and loss of sound
  • 专利标题（中）： 直立钢琴与重要的动作机构响应重复，没有双重打击和声音的损失
  • 申请号： US111289
    申请日： 1993-08-24
  • 公开(公告)号： US5353671A
    公开(公告)日： 1994-10-11
  • 发明人: Satoshi Inoue , Hajime Hayashida
  • 申请人： Satoshi Inoue , Hajime Hayashida
  • 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
  • 优先权： JPX4-255642 19920831
  • 主分类号： G10C3/16
  • IPC分类号： G10C3/16 ;  G10C3/24 ;  G10C3/18
Upright piano with key action mechanism responsive to repetition without double strike and loss of sound
摘要：
A key action mechanism incorporated in an upright piano is accompanied with a repetition mechanism having a repetition lever rotatably supported by a butt and pushed by a jack after an escape from the butt for producing a gap between a leading end thereof and a back check, therefore, the butt and, accordingly, hammer assembly can rotate backwardly over a predetermined angle due to the gap, after the striking or after the escape of the jack, and, as a result, the hammer assembly is prevented from double-strike.
摘要（中）：

结合在立式钢琴中的关键作用机构伴随着一种重复机构，其具有由臀部可旋转地支撑的重复杆，并且在从对接件逸出之后由千斤顶推动以在其前端和后支架之间产生间隙，因此 ，因此，锤头组件可以由于间隙，在打击之后或在千斤顶的逸出之后向后旋转预定的角度，结果防止了锤组件的双击。

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