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US 10,107,041 B2Granted
Drill bit having shear cutters and gouging cutters
AssigneeShear Bits, Ltd.
InventorsJohn James Herman, Dallas Wilkins, Ryan J. C. Marley, Timothy P. Beaton
Life of this patent
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Abstract
A drill bit includes a bit body defining a plurality of blades extending from a selected distance from an axis of rotation of the bit body to a gage face. A plurality of only gouging cutters is mounted on the bit body. At least one of the plurality of blades has a blade top surface longitudinally behind the tips of the gouging cutters at a selected distance from the tips of the gouging cutters.
Claims26
A drill bit, comprising:
- a bit body having a plurality of gouging cutters mounted on the bit body;
- a plurality of blades extending from a selected distance from an axis of rotation of the bit body to a gage face;
- and
- at least one of the plurality of blades comprising a plurality of shear cutters affixed thereon, wherein the gouging cutters extend a selected distance longitudinally ahead of a cutting surface defined by the shear cutters and wherein the gouging cutters are rotatably mounted to the bit body rotationally ahead of the shear cutters and in pockets that are on a leading face of a same one of the at least one of the plurality of blades.
1 more element
A drill bit, comprising:
- a bit body having a plurality of gouging cutters mounted on the bit body;
- a plurality of blades extending from a selected distance from an axis of rotation of the bit body to a gage face;
- and at least one of the plurality of blades comprising a plurality of shear cutters affixed thereon, wherein the gouging cutters are rotatably mounted to the bit body rotationally ahead of the shear cutters and in pockets that are on a leading face of a same one of the at least one of the blades.
Dependencies are inferred from the claim text.