A drill bit

Details A drill bit A drill bit

B - Operations, Transporting

23

B

B23B 51/02 (2006.01) B23B 51/00 (2006.01)

Patent

CA 2216143

A masonry drill bit having an active diameter of D, comprising a shaft and a tip 1 for engaging a workpiece, wherein the tip 1 is formed with a plurality of stepped portions shaped to cut a workpiece as the drill bit rotates. By virtue of the drill bit tip 5 configuration as described and claimed herein, a masonry drill bit 1 having improved performance is provided.

Cette invention concerne un foret à maçonnerie à diamètre extérieur D comprenant un coprs et une pointe d'attaque centrage 1 comportant une série de gradins profilés pour entailler la pièce lorsque le foret est animé d'un mouvement de rotation. La configuration 5 de la pointe du foret, telle que décrite et revendiquée, confère à l'objet de l'invention une efficacité améliorée.

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