发明名称 A GROUT DELIVERY SYSTEM FOR A ROCK BOLT
摘要 A grout delivery device which includes a body which defines an internal volume (18), opposing first (34) and second(26) apertures in the body, in communication with the volume, through which a rock support tendon (50) extends, and a grout formation (44) on the body for connection to a grout source.
申请公布号 CA2757519(A1) 申请公布日期 2010.10.07
申请号 CA20092757519 申请日期 2009.06.15
申请人 AVENG (AFRICA) LIMITED 发明人 STEYN, JOHANN;HOWELL, MICHAEL MARTIN CHARLES
分类号 E21D20/02 主分类号 E21D20/02
代理机构 代理人
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