Drilling tool with a cutting element that is configured as a...

Details Drilling tool with a cutting element that is configured as a... Drilling tool with a cutting element that is configured as a...

2005-08-04

2010-06-22

Bagnell, David J (Department: 3676)

Boring or penetrating the earth

Bit or bit element

Impact or percussion type

C175S415000, C408S227000

Reexamination Certificate

active

07740089

ABSTRACT:
The invention relates to a drilling tool, especially for percussion drilling, which comprises a cutting element (3) that is configured as a plate (3) or head and that has at least one cutting edge (11) defined by a cutting face (6) and a free face (10). The cutting edge (11) is associated with a first free face section (10a) which is limited in a cutting plane at a right angle to the cutting edge (11) and parallel to the longitudinal axis (L) of the drilling tool (1) by a convex bulge (13) or a convex polygon outline. The vertical height of a rib (14) defined by the first free face section (10a) and an associated first cutting face section (6a) ranges from 0.1 mm to 1.0 mm.

REFERENCES:
patent: 6595305 (2003-07-01), Dunn et al.
patent: 2005/0103532 (2005-05-01), Magin
patent: 2006/0118341 (2006-06-01), Huber
patent: 197 34 094 (1998-05-01), None

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