| 发明名称 | Crown shaped retainer | ||
| 摘要 | Provided is a crown-shaped retainer (20), including: an annular base (22); a plurality of pockets (24) each penetrating the crown-shaped retainer in a radial direction thereof and having an opening (a) on one side of the crown-shaped retainer in an axial direction thereof; and a pair of prongs (26) positioned on both sides of the opening (a) of each of the plurality of pockets (24) in a circumferential direction of the crown-shaped retainer, the each of the plurality of pockets (24) having an inner circumferential surface including: a spherical portion (28) positioned on a radially inner side of the crown-shaped retainer; and a cylindrical portion (30) positioned on a radially outer side of the crown-shaped retainer, the cylindrical portion (30) having an inner diameter (φ D2) larger than a ball diameter (dw). | ||
| 申请公布号 | US9546681(B2) | 申请公布日期 | 2017.01.17 |
| 申请号 | US201314442836 | 申请日期 | 2013.10.16 |
| 申请人 | NTN CORPORATION | 发明人 | Sasaki Katsuaki |
| 分类号 | F16C33/41;F16C33/44;F16C33/38;F16C43/08;F16C19/06 | 主分类号 | F16C33/41 |
| 代理机构 | Wenderoth, Lind & Ponack, L.L.P. | 代理人 | Wenderoth, Lind & Ponack, L.L.P. |
| 主权项 | 1. A crown-shaped retainer, comprising: an annular base; a plurality of pockets each penetrating the crown-shaped retainer in a radial direction thereof and having an opening on one side of the crown-shaped retainer in an axial direction thereof; and a pair of prongs positioned on both sides of the opening of each of the plurality of pockets in a circumferential direction of the crown-shaped retainer, wherein each of the plurality of pockets has an inner circumferential surface comprising: a spherical portion positioned on a radially inner side of the crown-shaped retainer; anda cylindrical portion positioned on a radially outer side of the crown-shaped retainer, and the cylindrical portion and the spherical portion have inner diameters larger than a ball diameter. | ||
| 地址 | Osaka JP | ||