公开(公告)号：US5398998A

公开(公告)日：1995-03-21

申请号：US192408

申请日：1994-02-04

申请人： Byrce B. Evans

发明人： Byrce B. Evans

IPC分类号： E21C37/10 ,  E21C37/04

CPC分类号： E21C37/10

摘要： A pressure actuated fracture tool for use in splitting and fracturing hardened material, such as rock, stone, concrete and the like, having two expansible outer shells designed to move in opposition to each other along a selected axis transverse to the longitudinal axis of the tool. The outer shells define a central orifice extending longitudinally to length of the tool. An elastomeric tubular member is positioned in the central cavity between two longitudinally fixed end connectors. Upon the application of pressure to the tubular member, the outer shells expand outwardly in a determined radial diversion to contact the wall of a cavity bored in the hardened material and cause the material to cleave or split.

摘要翻译： 用于分解和压裂硬化材料（例如岩石，石头，混凝土等）的压力致动断裂工具，具有两个可膨胀的外壳，所述两个可膨胀外壳设计成沿着与所述工具的纵向轴线相垂直的选定的轴线彼此相对移动 。 外壳限定了纵向延伸到工具长度的中心孔。 弹性体管状构件位于两个纵向固定端连接器之间的中心空腔中。 在对管状构件施加压力时，外壳以确定的径向转向向外膨胀以与在硬化材料中钻出的空腔的壁接触并导致材料裂开或分裂。