Hawera Probst Gmbh

Aresi S.p.a.

Robert Boschgmbh

Marco Lang

Bernhard Moser

Rainer Widmann

Franc Koljaka

August Haussmann

Friedmar Dresig

Thomas Bernhardt

Stefano Monzani

A tool bit for a chisel or a hammer drill, in particular, a insertable chisel or insertable drill for power-driven drill and chisel hammers, has an insertion end, with a chisel shank or drill shank, and a chisel head or drill shank located opposite the insertion end. The diameter of the shank increases in the direction of the chisel head at least once from a first, small diameter to a second, large diameter and decreases again from this to a small diameter or forms at least one bead.

Chisel

The invention relates to a flat chisel, in particular an insertion chisel for power-driven drill and chisel hammers for working stone, having a chisel head which has a main tip disposed transversely to a chisel longitudinal axis, a front and rear striking surface, and at least one side face connecting the striking faces. In this case, a side face designed as a side lip is provided.

Flat chisel

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

Drilling tool

The invention relates to a drilling tool (), in particular for working concrete, rock, masonry and suchlike materials, having a tool head with cutting body () which has at least one front rake face (), at least one rear flank ([lacuna]) and at least one front-end cutting edge (), the cutting edge () separating the rake face () and the flank ([lacuna]). In this case, the rake face () is formed by at least two cutting faces ([lacuna]) merging into one another at at least one second cutting edge ().

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Ravensburg, Germany

Marco Lang