发明名称 |
SHANK ADAPTOR WITH STRENGTHENED FLUSHING HOLE |
摘要 |
A rock drilling shank adaptor having at least one flush hole extending radially through the body of the adaptor in communication with an axially extending internal bore. The flush hole in a direction from an external side to an internal side comprises a surface at a rearward region that is curved at least at a radially inner portion to extend in an axial direction towards a forwardmost end of the adaptor to increase the resistance of the adaptor to stress concentrations whilst achieving a desired flow rate of flushing fluid flow into the internal bore. |
申请公布号 |
WO2016192910(A1) |
申请公布日期 |
2016.12.08 |
申请号 |
WO2016EP59729 |
申请日期 |
2016.05.02 |
申请人 |
SANDVIK INTELLECTUAL PROPERTY AB |
发明人 |
NORDSTRAND, Anna;AHOLA, Petri;HEMPH, Rasmus |
分类号 |
E21B17/03;B25D17/00;E21B6/00 |
主分类号 |
E21B17/03 |
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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