Drill bit and method for producing a drill bit
AssigneeSurgibit IP Holdings Pty Limited
InventorLiam Patrick Ellis
Life of this patent
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Abstract
A drill bit including a shaft which has a pyramidal shaped end defining a drill tip with a plurality of edges defining the pyramidal shape. One or more recesses are provided for directing away debris produced whilst drilling, the at least one recess having a first portion extending along the shaft and a second portion having a first portion extending along the shaft and a second portion which extends along the drill tip; wherein the. The second portion which extends along the drill tip. The second portion of the at least one recess extends along an edge of the drill tip.
Claims9
1-27. (canceled)
A drill bit comprising:
- a shaft comprised of two parts:
- (1) a pyramidal shaped end portion defining a drill tip and having a plurality of cutting edges;
- and
- (2) a shank portion;
- a plurality of recesses for directing away debris produced while drilling, each said recess having two portions:
- (1) a first portion extending along said shank portion;
- and
- (2) a second portion formed in said end portion, said second portion extending along each said cutting edge of said end portion.
A drill bit as claimed in claim 1 wherein said second portion of each said recess is non-helical.
Dependencies are inferred from the claim text.