| 发明名称 | Corrosion resistant bicycle disc brake rotor | ||
| 摘要 | A bicycle disc brake rotor, having a rotational center axis, comprises a base portion including iron and a surface portion including iron, aluminum, and chrome. The surface portion is formed on an external surface of the base portion. A concentration gradient of chrome of the surface portion is formed in an axial direction parallel to the rotational center axis. | ||
| 申请公布号 | US9580136(B2) | 申请公布日期 | 2017.02.28 |
| 申请号 | US201514629419 | 申请日期 | 2015.02.23 |
| 申请人 | Shimano Inc. | 发明人 | Sasaki Bungo;Souwa Makoto;Iwai Toru |
| 分类号 | F16D65/12;B62L1/00;F16D65/853;F16D65/02 | 主分类号 | F16D65/12 |
| 代理机构 | Alleman Hall McCoy Russell & Tuttle LLP | 代理人 | Alleman Hall McCoy Russell & Tuttle LLP |
| 主权项 | 1. A bicycle disc brake rotor device having a rotational center axis, the bicycle disc brake rotor device comprising: a base portion including iron; a surface portion formed on an external surface of the base portion, the surface portion including iron, aluminum, and chromium, the surface portion having a concentration gradient of chromium in an axial direction parallel to the rotational center axis; and a hub attachment member configured to be mounted to a bicycle hub assembly of a bicycle, wherein the surface portion is formed by a diffusion process, and the diffusion process comprises heating the base portion to 1000° C. in chromium and aluminum media, such that the surface portion exhibits a structural characteristic of diffusion hardened chromium-iron-aluminum alloy with the concentration gradient of chromium. | ||
| 地址 | Sakai-shi JP | ||