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US 2007/0175664 A1Published application
Rock drill bit assembly
AssigneeAtlas Copco Secoroc LLC
InventorLars Holmgren
Life of this patent
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Abstract
A drill bit assembly for direct removal of rock with a rotatable bit assembly (5) that includes a plurality of cutters or choppers (7). According to the invention, an number of cutters (7) are so disposed in relation to each other or the bit assembly (5) that a subsequent cutter (7b), seen in the direction of rotation, will engage an edge created by the action of preceding cutter (7a).
Claims5
A drill bit assembly for direct removal of rock by means of a rotatable bit assembly (5;
- 8) that includes a number of cutters or choppers (7;
- 9), characterised in that a number of cutters (7;
- 9) on the bit assembly (5;
- 8) are so disposed in relation to each other that a subsequent cutter, seen in the direction of rotation, will engage an edge created by the action of a preceding cutter.
1 more element
Dependencies are inferred from the claim text.