DRILL

A drill is disclosed. The includes a drill head made of hard metal and a shank made of steel to which the drill head is fastened integrally. An underside of the drill head is roughed with multiple depressions and/or elevations, the height of which is a maximum of 15 percent, preferably 10 percent of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: FOSER ROLAND, DOMANI GUENTHER, MOSELEY STEVEN, ALLAART JAN
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:A drill is disclosed. The includes a drill head made of hard metal and a shank made of steel to which the drill head is fastened integrally. An underside of the drill head is roughed with multiple depressions and/or elevations, the height of which is a maximum of 15 percent, preferably 10 percent of a height of the drill head.