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公开(公告)号：US3559526A
公开(公告)日：1971-02-02
申请号：US3559526D
申请日：1968-09-20
申请人： RAFFALI ANDRE
发明人： RAFFALI ANDRE
CPC分类号： G10C3/22
摘要： In application of the invention to a keyboard musical instrument such as a piano, the key is guided by a deformable parallelogram linkage, so that during its actuated displacement, the key remains parallel to its original orientation; between each key and the associated hammer is interposed a transmission which, when the key is depressed, gives the hammer an accelerated movement with respect to the movement of depression of the said key; the release of the transmission for the free return of the hammer after striking, is effected after the full depression of the key during the sole inertia movement of the hammer towards the wire; the effect of the soft pedal is obtained by continuous modification of the active length of an intermediate lever of the transmission.
摘要翻译： 在将本发明应用于诸如钢琴的键盘乐器时，钥匙由可变形平行四边形连杆引导，使得在其致动位移期间，键保持平行于其原始方向; 在每个键和相关联的锤之间插入传动装置，当按键被按压时，相对于所述键的凹陷的移动使锤子加速运动; 在敲击锤的唯一惯性运动之后完全按压钥匙后，释放用于敲击后锤的自由返回的传动装置; 通过连续改变变速器的中间杆的有效长度来获得软踏板的效果。
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公开(公告)号：US3699835A
公开(公告)日：1972-10-24
申请号：US3699835D
申请日：1970-10-09
申请人： RAFFALI ANDRE
发明人： RAFFALI ANDRE
CPC分类号： G10C3/22
摘要： In application of the invention to a keyboard musical instrument such as a piano, the key is guided by a deformable parallelogram linkage, so that during its actuated displacement, the key remains parallel to its original orientation; between each key and the associated hammer is interposed a transmission which, when the key is depressed, gives the hammer an accelerated movement with respect to the movement of depression of the said key; the release of the transmission for the free return of the hammer after striking is effected after the full depression of the key during the sole inertia movement of the hammer towards the wire; the effect of the soft pedal is obtained by continuous modification of the active length of an intermediate lever of the transmission.
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