Continuous Sampling Drill Bit
AssigneeLongyear TM, Inc.
InventorsAdrian Brubacher, Christopher L. Drenth
Life of this patent
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Abstract
A drill bit can be configured to form core segments during drilling. The drill bit can have having a central axis and a shank defining an inner bore. A crown can be coupled to the shank. The crown can define a cutting face and a core receiving slot that extends inwardly into the crown from the cutting face. The crown can define an inner operative circumference. A core break structure can be disposed within the shank. The core break structure can define a core break surface that extends inwardly toward the central axis and intersects an imaginary 3D projection of the inner circumference projected along the central axis.
Claims20
A drill bit configured to form core segments during drilling, the drill bit having a central axis, the drill bit comprising:
- a shank defining an inner bore;
- a crown coupled to the shank, wherein the crown defines a cutting face and a core receiving slot that extends inwardly into the crown from the cutting face, wherein the crown defines an inner operative circumference;
- and
- a core break structure disposed within the shank, wherein the core break structure defines a core break surface that extends inwardly toward the central axis and intersects an imaginary 3D projection of the inner circumference projected along the central axis.
A drilling assembly comprising:
- a drill rod defining an inner bore;
- and
- a drill bit configured to form core segments during drilling, the drill bit having a central axis, the drill bit comprising:
- a shank defining an inner bore;
- a crown coupled to the shank, wherein the crown defines a cutting face and a core receiving slot that extends inwardly into the crown from the cutting face, wherein the crown defines an inner operative circumference;
- and
- a core break structure disposed within the shank, wherein the core break structure defines a core break surface that extends inwardly toward the central axis and intersects an imaginary 3D projection of the inner circumference projected along the central axis,
- wherein the shank of the drill bit is threadedly coupled to the drill rod.
Dependencies are inferred from the claim text.