Drill for making a hole in the ground and method a

专利名称：Drill for making a hole in the ground and

method applying this drill

发明人：Coelus, Gaspar Jozef申请号：EP97202837.7申请日：19970916公开号：EP0831180A1公开日：19980325

专利附图：

摘要：Drill for making a pole in the ground, whereby this drill (9) is provided with apassage (15) and whereby this drill has at the bottom a screw-shaped displacement part(11) of which the outside increases in radius upwardly, up to a diameter larger than that

of the drill tube (8), characterised in that the displacement part (11) passes with its upperextremity into a cylindrical part (12) which is provided on its mantle with at least a screwblade (13) which runs in the shape of a screw in the same direction as the displacementpart (11), but of which the pitch (S2) is larger than the pitch (S1) of the displacement part(11).

申请人：Coelus, Gaspar Jozef,Poorteman, Frank

地址：Astridlaan 53 B-8450 Nieuwpoort BE,Eikenlaan 9 9150 Bazel BE

国籍：BE,BE

代理机构：Donné, Eddy

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