发明名称 Key for musical instrument
摘要 A key for a musical instrument is provided for effectively giving a touch load to the key, while employing an alternative material having a specific gravity equal to or larger than a predetermined value, instead of lead, as a material for the weight, simplifying works involved in fixing the weight in a key body, and reducing the frequency of troubles such as cracking of the key body, thereby reducing the manufacturing cost. The key comprises a swingable key body formed with an embedding hole which extends through a front plate in the vertical direction to reach the key body, and a weight made of an alternative material other than lead. The weight has a smooth portion and a knurled portion on the outer peripheral surface thereof. The weight is press-fitted into the embedding hole from the smooth portion and thereby fixed in the key body.
申请公布号 US6693235(B2) 申请公布日期 2004.02.17
申请号 US20020261603 申请日期 2002.10.02
申请人 KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO 发明人 OOKUBO KENICHI
分类号 G10C3/12;(IPC1-7):G10C3/12 主分类号 G10C3/12
代理机构 代理人
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