| 发明名称 | White key of keyboard instrument | ||
| 摘要 | A white key of a keyboard instrument includes: an upper wall elongated in a front and rear direction; and a pair of side walls extending downward respectively from right and left edges of the upper wall and each elongated in the front and rear direction. The upper wall and the pair of side walls define an inner space opening downward. The upper wall and the pair of side walls include: a narrow portion and a wide portion wider in a right and left direction. The white key has right and left portions with respect to a center line of the narrow portion. The right and left portions are different in construction to adjust a balance of load between the right and left portions with respect to the center line. | ||
| 申请公布号 | US9508325(B2) | 申请公布日期 | 2016.11.29 |
| 申请号 | US201514880113 | 申请日期 | 2015.10.09 |
| 申请人 | Yamaha Corporation | 发明人 | Yamamoto Shin |
| 分类号 | G10C3/12 | 主分类号 | G10C3/12 |
| 代理机构 | Morrison & Foerster LLP | 代理人 | Morrison & Foerster LLP |
| 主权项 | 1. A white key of a keyboard instrument, the white key comprising: an upper wall elongated in a front and rear direction; and a pair of side walls extending downward respectively from right and left edges of the upper wall and each elongated in the front and rear direction, the upper wall and the pair of side walls defining an inner space opening downward, the upper wall and the pair of side walls comprising a narrow portion and a wide portion that is greater than the narrow portion in width in a right and left direction, the white key comprising right and left portions located respectively to right and left of a center line of the narrow portion in the right and left direction, a one-side portion as one of the right and left portions and an other-side portion as another of the right and left portions being different from each other in construction to adjust a balance of load between the right and left portions with respect to the center line. | ||
| 地址 | Hamamatsu-Shi JP | ||