Tool bit

Details Tool bit Tool bit

B - Operations, Transporting

23

B

B23B 51/02 (2006.01) B23B 31/00 (2006.01) B25B 15/00 (2006.01) B25B 23/10 (2006.01)

Patent

CA 2442551

A drill bit (10) has a chuck engaging shank portion having a geometric cross- sectional shape with a plurality of projections (14) formed on at least a part of at least one of surfaces (12). The projections (14) vary in height across the surface (12) and engage an inner surface of a chuck to prevent slippage of the bit (10) in the chuck.

L'invention concerne un trépan (10) pourvu d'une partie tige en prise avec un mandrin présentant une coupe transversale géométrique à plusieurs éléments saillants (14) formés sur au moins une partie d'au moins une surface (12). La hauteur des éléments saillants (14) varie sur la surface et viennent en contact avec une surface interne d'un mandrin pour prévenir le glissement du trépan (10) dans le mandrin.

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