Drilling tool

Details Drilling tool Drilling tool

2006-02-21

2006-02-21

Howell, Daniel W. (Department: 3722)

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

C175S385000, C175S394000, C175S420100

Reexamination Certificate

active

07001120

ABSTRACT:
The invention relates to a drilling tool (36), in particular for working concrete, rock, masonry and suchlike materials, having a single- or multi-edge tool head with at least one cutting body (1) which comprises a central region (12) which is designed in a roof shape, has rake faces and flanks and is defined laterally by two outer regions (13, 14) set back in the effective direction of the drill. In this case, the ground surfaces of the central region (12) form a pyramidal point (15) while avoiding the formation of a chisel edge.

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