发明名称 DRILLING APPARATUS WITH DRILL GUIDE
摘要 An apparatus for use in connection using a drill having a drilling element for forming a borehole in a face of a mine passage includes a drill guide for engaging the drilling element while permitting the drilling element to move toward the face for forming the borehole. The drill guide includes a keeper for keeping the drilling element in a desired position, which keeper is biased for pivoting movement upon the application of a manual force between an active position for capturing the drilling element and a retracted position for releasing the drilling element. A low profile drill guide is also disclosed, as is a guard for a drill guide, and also related methods.
申请公布号 ZA201401727(B) 申请公布日期 2015.06.24
申请号 ZA20140001727 申请日期 2014.03.04
申请人 J.H. Fletcher & Co 发明人 WILSON, HENRY E.;FARRELL, SEAN CASEY;ANDERSON, ROBERT SHERWOOD;MCQUERREY, SEAN JOSEPH
分类号 E21B 主分类号 E21B
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