Multi-purpose drilling tool

Details Multi-purpose drilling tool Multi-purpose drilling tool

2008-07-22

2008-07-22

Neuder, William P (Department: 3672)

Boring or penetrating the earth

With tool shaft detail

Helix or helically arranged structure

C175S415000, C408S230000

Reexamination Certificate

active

07401667

ABSTRACT:
The present invention relates to a multi-purpose drilling tool with a boring head, a drill twist connected thereto and a downstream clamping shank, a cutting element (1) being provided on the working side of the boring head. The cutting element (1) has a face (9, 24) with a rake angle (γ) having a value of γ≧0° b, the cutting element (1) having a flank (10, 13) with a lip clearance angle (α) having a value of 5°≦α≦15° and, in particular, α≈10°.

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patent: 2003/0000745 (2003-01-01), Huber
patent: 2005/0103532 (2005-05-01), Magin
patent: 31 23 048 (1882-08-01), None
patent: 0 427 857 (1991-05-01), None
patent: 03/051565 (2003-06-01), None

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