| 发明名称 | Bicycle sprocket | ||
| 摘要 | A bicycle sprocket comprises a sprocket member. The sprocket member includes an annular base portion, sprocket teeth, and a closed tooth opening. The sprocket teeth are configured to protrude radially outwardly from the annular base portion. The sprocket teeth are arranged in a circumferential direction of the annular base portion. Each of the sprocket teeth has a tooth bottom defining a root circle of the sprocket teeth. The closed tooth opening is at least partly positioned radially outwardly from the root circle. | ||
| 申请公布号 | US9297452(B2) | 申请公布日期 | 2016.03.29 |
| 申请号 | US201314043770 | 申请日期 | 2013.10.01 |
| 申请人 | Shimano Inc. | 发明人 | Iwai Tooru;Yoshida Toyoshi |
| 分类号 | F16H55/30;B62M9/00 | 主分类号 | F16H55/30 |
| 代理机构 | Mori & Ward, LLP | 代理人 | Mori & Ward, LLP |
| 主权项 | 1. A bicycle sprocket having a rotational center axis, the bicycle sprocket comprising: a sprocket member including: an annular base portion;sprocket teeth configured to protrude radially outwardly from the annular base portion, the sprocket teeth being arranged in a circumferential direction of the annular base portion, each of the sprocket teeth having a tooth bottom defining a root circle of the sprocket teeth; anda closed tooth opening being at least partly positioned radially outwardly from the root circle, the closed tooth opening is free of a metallic material when the bicycle sprocket is in an assembled state. | ||
| 地址 | Sakai JP | ||