发明名称 Drilling device for producing pipe lines, preferably for waste water pipes
摘要 The device has a rotatable cutting head (20) that can be driven forward in a machine pipe (25) to make a bore (16) by cutting away ground material at the end and pipes (12) behind the cutting head for insertion into the bore. An injection device (70) has an injection lance (72) extending through the cutting head to inject self-setting material into the material (15), esp. rock, in front of the cutting head.
申请公布号 CH690654(A5) 申请公布日期 2000.11.30
申请号 CH19960000895 申请日期 1996.04.09
申请人 GRANELLA BRUNO 发明人 GRANELLA BRUNO
分类号 E21B7/20;E21B7/28;E21D9/06;(IPC1-7):E21B7/20;E03F3/06 主分类号 E21B7/20
代理机构 代理人
主权项
地址