发明名称 Key for musical instrument
摘要 A key is provided for permitting simple attachment of a weight and easy adjustment of a touch load, while using an alternative material for substitution for lead as a material for the weight, to thereby reduce the manufacturing cost. A swingable key body is formed with an embedding hole. The weight is made of a composite material produced by blending a plurality of kinds of materials except for lead in a predetermined blending proportion to have a predetermined specific gravity, and is removably attached to the embedding hole of the key body.
申请公布号 US6531651(B2) 申请公布日期 2003.03.11
申请号 US20010846195 申请日期 2001.05.02
申请人 KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO 发明人 KANEMITSU MAKOTO;YAMASHITA MITSUO;KURITA HIROYUKI;ABIKO MASAHIKO
分类号 G10C3/12;(IPC1-7):G10C3/12 主分类号 G10C3/12
代理机构 代理人
主权项
地址