| 发明名称 |
UNIVERSALBORRMASKIN |
| 摘要 |
A borer comprises a hammer, a spindle connected to rotate with a rotatable table, and a vibrator connected between the hammer and a support for vibrating the hammer. The spindle is free to rotate with respect to the support. A flexible coupling is arranged between the support and the table. |
| 申请公布号 |
SE400102(B) |
申请公布日期 |
1978.03.13 |
| 申请号 |
SE19720005697 |
申请日期 |
1972.04.28 |
| 申请人 |
* LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES |
发明人 |
H * NORET;A * JODET;J * DEMICHELIS |
| 分类号 |
E21B1/20;E21B7/24;(IPC1-7):02D1/02;21B5/00 |
主分类号 |
E21B1/20 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
