发明名称 AUXILIARY EQUIPMENT FOR USE WITH DRILLING APPARATUS
摘要 <p>The invention relates to auxiliary working apparatus (10) for use with drilling apparatus for drilling holes into the ground and where the drilling apparatus has a platform supported by a support structure (50) thereof through which a drill bit (30) passes, the platform serving as a barrier between chippings blown from a hole being drilled into the ground and the drill motor and drill bit displacement mechanism of the drilling apparatus. The auxiliary working apparatus includes displacement means in the form of a roller-type brush (20) arrangement that, in its operative configuration, is mounted beneath the platform and that is operable for displacing chippings blown from a hole being drilled into the ground to spaced locations from the hole.</p>
申请公布号 WO2007122528(A1) 申请公布日期 2007.11.01
申请号 WO2007IB51200 申请日期 2007.04.04
申请人 GOUWS, PETRUS, CHRISTIAAN 发明人 GOUWS, PETRUS, CHRISTIAAN
分类号 E21B21/015;E21B21/07 主分类号 E21B21/015
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