发明名称 Key and Keyboard Apparatus
摘要 A key having a key-depression surface with a woody characteristic and durability without the need of a surface treatment and capable of being formed from a simple-shaped uncompressed wood. A key for use as a black key includes a resin part and a compressed wood part secured at its lower surface to an upper surface of the resin part. The compressed wood part is used to constitute a portion of a key top including an upper surface and positioned above an upper surface of white keys which are in a non-key-depression state. The compressed wood part is obtained by compression molding of unprocessed wood. The compressed density in the vertical direction in the compressed wood part is higher toward rearward from a front end of the compressed wood part.
申请公布号 US2009205478(A1) 申请公布日期 2009.08.20
申请号 US20090369623 申请日期 2009.02.11
申请人 YAMAHA CORPORATION 发明人 OSUGA ICHIRO;ABE HIROYASU
分类号 G10C3/12 主分类号 G10C3/12
代理机构 代理人
主权项
地址