US 12,139,985 B2
Continuous sampling drill bit
Adrian Brubacher, North Bay (CA); and Christopher L. Drenth, Callander (CA)
Assigned to Veracio Ltd., Salt Lake City, UT (US)
Filed by VERACIO LTD., Salt Lake City, UT (US)
Filed on Dec. 2, 2022, as Appl. No. 18/073,873.
Claims priority of provisional application 63/285,844, filed on Dec. 3, 2021.
Prior Publication US 2023/0175334 A1, Jun. 8, 2023
Int. Cl. E21B 25/10 (2006.01); E21B 10/02 (2006.01)
CPC E21B 25/10 (2013.01) [E21B 10/02 (2013.01)] 16 Claims
OG exemplary drawing
 
13. 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;
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 core break structure comprises a spherical element that defines the core break surface; and
a sleeve that is received within the inner bore of the shank, wherein the sleeve defines a receptacle that receives at least a portion of the spherical element,
wherein the shank of the drill bit is threadedly coupled to the drill rod, and wherein the drill rod biases against the sleeve.