Leading body for ground drilling and ground drilling machine

Details Leading body for ground drilling and ground drilling machine Leading body for ground drilling and ground drilling machine

2005-07-05

2005-07-05

Walker, Zakiya (Department: 3672)

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

Normally curved guide or shaft

C175S393000

Reexamination Certificate

active

06913094

ABSTRACT:
A leading body for a ground drilling machine is provided which includes a main body which is tapered at a front end thereof to form a first sloped surface and a second sloped surface on opposite sides of the front end of the main body. A slant-cutting section extends from the main body substantially along the first sloped surface. And injection ports which are adapted to inject digging liquid are positioned in the slant-cutting section such that the injection ports inject digging liquid rearward with respect to a propelling direction of the leading body along an obtuse angle with respect to a rotation axis of the leading body and substantially along the second sloped surface.

REFERENCES:
patent: 4674579 (1987-06-01), Geller et al.
patent: 5322134 (1994-06-01), Dahn
patent: 6263984 (2001-07-01), Buckman, Sr.
patent: 6530439 (2003-03-01), Mazorow

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