| 发明名称 |
Twist drill |
| 摘要 |
<p>A twist drill including a spiral-forming hollow shaft (3) having a spiral-shaped inner surface, and drilling head(5) and shank (6) connected with the shaft (3) at its opposite ends, respectively; and a method for forming such a twist drill.</p> |
| 申请公布号 |
EP1260338(A2) |
申请公布日期 |
2002.11.27 |
| 申请号 |
EP20020405364 |
申请日期 |
2002.05.06 |
| 申请人 |
HILTI AKTIENGESELLSCHAFT |
发明人 |
SAITTA, ROBERT S.;WELLS, TROY D.;PUTZI, CHRISTIAN |
| 分类号 |
B23B51/00;B28D1/14;B21H3/10;B23B51/02;B23P15/32;E21B10/44;(IPC1-7):B28D1/14 |
主分类号 |
B23B51/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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