| 发明名称 |
CONTROL SYSTEM FOR PERCUSSION DRILL |
| 摘要 |
A control system for a percussion drill with a hydraulically actuated drill rotation mechanism (12), a drill feed mechanism (14) which includes a control means (48) which operates, in response to the hydraulic pressure in the drill feed mechanism to start percussion movement of the drill.
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| 申请公布号 |
CA2161128(A1) |
申请公布日期 |
1994.10.27 |
| 申请号 |
CA19942161128 |
申请日期 |
1994.04.19 |
| 申请人 |
LEPPANEN, JARMO UOLEVI;BRIGGS, ROGER ROBARTS |
发明人 |
LEPPANEN, JARMO UOLEVI;BRIGGS, ROGER ROBARTS |
| 分类号 |
E21B1/26;E21B44/06;(IPC1-7):E21B44/00 |
主分类号 |
E21B1/26 |
| 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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