| 发明名称 |
SYMMETRICAL BIT FOR DIRECTIONAL DRILLING TOOL |
| 摘要 |
A percussion drill bit for directional drilling tools. The drill bit comprises a head portion formed with an axially extending shank. The drill bit also comprises engagement means on the shank engageable with complementary engagement means formed on a drive chuck whereby rotational drive from the chuck may be transmitted to the shank. The head portion of the drill bit is formed with a plurality of slant faces arranged symmetrically about the head portion. |
| 申请公布号 |
US2015176334(A1) |
申请公布日期 |
2015.06.25 |
| 申请号 |
US201314390478 |
申请日期 |
2013.04.03 |
| 申请人 |
MINCON INTERNATIONAL LIMITED |
发明人 |
Purcell Joseph |
| 分类号 |
E21B10/36 |
主分类号 |
E21B10/36 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A percussion drill bit for directional drilling tools comprising:
a head portion formed with an axially extending shank engagement means on the shank engageable with complementary engagement means formed on a drive chuck whereby rotational drive from the chuck may be transmitted to the shank; characterised in that the head portion of the drill bit is formed with a plurality of slant faces arranged symmetrically about the head portion. |
| 地址 |
CO. CLARE IE |
