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1. 发明授权

US4381691A Touch force adjustment means for a piano 失效
标题翻译：触摸力调节装置用于钢琴
公开(公告)号：US4381691A
公开(公告)日：1983-05-03
申请号：US223756
申请日：1981-01-09
申请人： Harold A. Conklin, Jr. , Pieter W. van Nuis
发明人： Harold A. Conklin, Jr. , Pieter W. van Nuis
IPC分类号： G10C3/16 , G10C3/12
CPC分类号： G10C3/16
摘要： Means for adjusting the touch force required to depress the keys of a piano within the range normally preferred by pianists, comprising a plurality of spring member means having a relatively small spring constant (low stiffness). Each spring member means is connected at one of its ends to one of piano keys near the fulcrum thereof. Each spring member means is connected at its other end to a beam located above the keys and extending transversely thereof the full length of the keyboard. At least one of the connections of each spring member means is adjustable. The beam may be a single continuous member, or it may be made up of segments corresponding to groups of adjacent keys. In the initial adjustment each spring member means is typically prestressed by means of its adjustable connection to set the static touch force of its respective key to the desired value.
摘要翻译：用于调节在钢琴家通常优选的范围内按压钢琴琴键所需的触摸力的装置，包括具有相对小的弹簧常数（低刚度）的多个弹簧构件装置。每个弹簧构件装置的一端连接到靠近其支点的一个钢琴键。每个弹簧构件装置在另一端连接到位于钥匙上方的梁上并且横向延伸到键盘的全长。每个弹簧构件装置的至少一个连接是可调节的。梁可以是单个连续构件，或者它可以由与相邻键的组对应的段组成。在初始调整中，每个弹簧构件装置通常通过其可调连接件进行预应力，以将其各自的键的静态接触力设定为所需值。

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