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    Piano key covers formed of ivory substitute and pianos having same
    1.
    发明公开
    Piano key covers formed of ivory substitute and pianos having same 失效
    Abdeckung aus imitiertem Ivorfüreine Pianotaste und diese Abdeckung enthaltendes钢琴。

    公开(公告)号：EP0457619A2

    公开(公告)日：1991-11-21

    申请号：EP91304488.9

    申请日：1991-05-17

    申请人： STEINWAY MUSICAL PROPERTIES, INC. ,  RENSSELAER POLYTECHNIC INSTITUTE

    发明人： Calabrese, Salvadore J. ,  Scarton, Henry A. ,  Murray, Frank S. ,  Ettles, Christopher M. ,  Kennedy, Warren C. ,  Dinc, Saim ,  Jlidi, Bessem ,  Strong, William Y.

    IPC分类号： G10C3/12

    CPC分类号： G10C3/12 ,  B44F9/06

    摘要： A piano key cover having a body of synthetic material pigmented to resemble natural ivory defines a top playing surface having a random orientation of peak-to-valley texture and a multiplicity of fine pores to replicate a surface of natural ivory. A multiplicity of the pores have diameters generally in the range of 0.0002 to 0.0012 inch (0.005 to 0.030 mm). The synthetic material is selected from the group consisting of acrylic polymer, polyurethane, epoxy and the like. A method for forming such a piano key cover and a piano having key covers of the invention are also described.

    摘要翻译： 具有着色为类似于天然象牙的合成材料的主体的钢琴键盖限定了具有峰 - 谷纹理的随机取向和多个细孔的顶部游戏表面，以复制天然象牙的表面。 多个孔具有通常在0.0002至0.0012英寸（0.005至0.030mm）范围内的直径。 合成材料选自丙烯酸聚合物，聚氨酯，环氧树脂等。 还描述了用于形成这种钢琴键盖和具有本发明的键盖的钢琴的方法。