发明名称 |
Double wall flow tube for percussion tool |
摘要 |
An apparatus, system, and method of fabricating a percussion tool that includes a flow tube. The flow tube includes upper and lower portions, inner and outer walls, and at least one opening formed in the outer wall. The upper portion extends from a top end towards a bottom end. The lower portion extends from the upper portion to the bottom end. The inner wall extends from the top end to the bottom end and defines a central channel therein. The outer wall extends from the top end towards the bottom end, surrounds a portion of the inner wall and defines an outer channel with the inner wall. The opening is fluidly communicable with a first conduit formed within a piston, which surrounds a portion of the flow tube, when in an up position and is fluidly communicable with a second conduit formed within the piston when in a down position. |
申请公布号 |
AU2014348576(A1) |
申请公布日期 |
2016.05.26 |
申请号 |
AU20140348576 |
申请日期 |
2014.11.13 |
申请人 |
VAREL INTERNATIONAL IND., L.P. |
发明人 |
HARRINGTON, DAVID;PLANA, ANTHONY |
分类号 |
E21B1/00;E21B10/36;E21B10/38 |
主分类号 |
E21B1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|