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US 2006/0065447 A1Published application
Cutting elements and bits incorporating the same
AssigneeSmith International, Inc.
InventorsZan Svendsen, Yuelin Shen, Youhe Zhang
Life of this patent
Estimating the term…
Abstract
Cutting elements and bits incorporating such cutting elements are provided. The cutting elements include a substrate having an interface surface over which is formed an ultra hard material layer. A plurality of lands are formed on the interface surface. A plurality of depressions are formed on the lands.
Claims29
A cutting element comprising:
- a substrate having an interface surface and a periphery;
- a plurality of generally trapezoidal spaced apart peripheral lands defined on the interface surface, each of said plurality of lands extending to the periphery;
- a plurality of depressions formed on a surface of each land;
- and
- an ultra hard material layer formed over the interface surface.
2 more elements
A cutting element comprising:
- a substrate having an interface surface and a periphery;
- a main depression formed on the interface surface, the main depression comprising a generally polygonal annular depression in plan view and a radially extending depression extending form each vertex of the generally polygonal annular depression to the periphery, wherein a plurality of lands are defined by said main depression;
- a plurality of secondary depressions formed on said lands, said secondary depressions being shallower than said main depression;
- and
- an ultra hard material layer formed over the interface surface.
2 more elements
A cutting element comprising:
- a substrate having an interface surface;
- a plurality of lands formed on the interface surface;
- a plurality of abutting depressions formed on the lands, each abutting depression having a generally hexagonal shape in plan view, wherein the plurality of abutting depressions define a honeycomb pattern;
- and
- an ultra hard material layer formed over the interface surface.
2 more elements
A bit comprising:
- a body;
- and
- a cutting element mounted on the body, wherein the cutting element comprises,
- a substrate having an interface surface and a periphery,
- a plurality of generally trapezoidal spaced apart peripheral lands defined on the interface surface, each of said plurality of lands extending to the periphery,
- a plurality of depressions formed on a surface of each land, and
- an ultra hard material layer formed over the interface surface.
4 more elements
A bit comprising:
- a body;
- and
- a cutting element mounted on the body, the cutting element comprising,
- a substrate having an interface surface and a periphery,
- a main depression formed on the interface surface, the main depression comprising a generally polygonal annular depression in plan view and a radially extending depression extending form each vertex of the generally polygonal annular depression to the periphery, wherein a plurality of lands are defined by said main depression,
- a plurality of secondary depressions formed on said lands, said secondary depressions being shallower than said main depression, and
- an ultra hard material layer formed over the interface surface.
4 more elements
A bit comprising:
- a body;
- and
- a cutting element mounted on the body, the cutting element comprising,
- a substrate having an interface surface,
- a plurality of lands formed over the interface surface,
- a plurality of abutting depressions formed on the lands, the depressions having a generally hexagonal shape is plan view and defining a honeycomb pattern, and
- an ultra hard material layer formed over the interface surface.
4 more elements
Dependencies are inferred from the claim text.