Back to results
US 10,119,341 B2Granted
Cutter with support liner
AssigneeSmith International, Inc.
InventorsYouhe Zhang, Chen Chen, Yuri Burhan, Jibin Shi
Life of this patent
Estimating the term…
Abstract
A cutting element assembly includes a sleeve, a lining extending a distance axially from an end of the sleeve, and an inner cutter. The inner cutter has a cutting end, wherein the cutting end extends a depth from a cutting face, a side surface, and a body, wherein the body is at least partially disposed within the sleeve, and wherein the side surface of the cutting end interfaces with an interfacing surface of the lining.
Claims19
A drill bit, comprising:
- a bit body having a plurality of blades extending radially therefrom, at least one blade of the plurality of blades including a cut-out having forming at least:
- a cutter pocket at least partially defined by a side wall of the at least one blade;
- and
- a recess adjacent the cutter pocket and inset in the at least one blade relative to the cutter pocket;
- a cutting element in the cutter pocket, at least a portion of the cutting element being brazed to the side wall;
- and
- a lining within the recess, the lining having an interfacing surface that interfaces with an outer surface of the cutting element.
4 more elements
A drill bit, comprising:
- a bit body having a plurality of blades extending radially therefrom, a blade of the plurality of blades including a cut-out defining a cutter pocket;
- a cutting element, the cutting element including:
- a sleeve in the cutter pocket and attached to a side wall of the cut-out, the side wall defining at least a portion of the cutter pocket;
- a cutter in the sleeve, the cutter having a cutting face, a cutting end, and a body;
- and
- a lining in the cut-out and coupled to the blade of the plurality of blades, the lining having an interfacing surface that interfaces with an outer surface of the cutting end of the cutter, the lining being separate from the cutting element and extending around less than an entire circumference of the cutting end of the cutter.
3 more elements
A drill bit, comprising:
- a bit body having a plurality of blades extending radially therefrom, a blade of the plurality of blades including a cut-out defining a cutter pocket;
- a cutting element in the cutter pocket;
- wherein the cutting element comprising a sleeve attached to the cutter pocket with a braze material, the cutting element further including a cutter at least partially in the sleeve;
- and
- a lining in the cut-out and brazed to the cut-out and to the sleeve, the lining having an interfacing surface that interfaces with an outer surface of the cutting element.
2 more elements
Dependencies are inferred from the claim text.