Drilling head

Details Drilling head Drilling head

2005-08-23

2005-08-23

Dang, Hoang (Department: 3672)

Boring or penetrating the earth

Bit or bit element

C175S385000, C175S397000

Reexamination Certificate

active

06932170

ABSTRACT:
A drilling head (1) is disclosed, in particular for introduction into pipelines, with a rear connector piece (2) and a forward cutting body (3) of the size of the diameter, comprising cutting ribs (4), extending in the advancing direction (V), which have a convex arch and have a cutting edge (5) on both sides of the radial end thereof in the direction of the circumference. Conventional drilling heads can be applied only with difficulty in curved pipelines and have a tendency to damage the inner wall of the pipeline. The disclosed drilling head (1) has a cutting body (3) with a conical cutting head tip (7), surrounded by the back-cut tips (6) of the cutting ribs (4) which lie set back along a longitudinal axis (Y).

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