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US 2009/0152016 A1Published application
Cutting elements and bits incorporating the same
AssigneeSmith International, Inc.
InventorsRonald K. Eyre, John L. Williams
Life of this patent
Estimating the term…
Abstract
Cutting elements and bits incorporating such cutting elements are provided. The cutting elements have a substrate, a first ultra hard material layer formed over the substrate, and a second ultra hard material layer formed over the first ultra hard material layer. The second ultra hard material layer has a thickness in the range of 0.05 mm to 2 mm.
Claims20
A cutting element comprising:
- a substrate;
- a first ultra hard material layer formed over the substrate;
- and
- a second ultra hard material layer formed over the first ultra hard material layer, wherein the second ultra hard material layer has a thickness in the range of 0.05 mm to 2 mm, wherein both layers comprise PCD.
1 more element
A bit comprising:
- a body;
- and
- a cutting element mounted on the body, the cutting element comprising,
- a substrate, and
- a cutting layer formed over the substrate, the cutting layer comprising,
- a first ultra hard material layer formed over the substrate, and
- a second ultra hard material layer formed over the first ultra hard material layer, wherein the second ultra hard material layer has a thickness in the range of 0.05 mm to 2 mm, wherein both layers comprise PCD, and wherein said second ultra hard material layer is oriented for making contact with an object to be drilled by said bit.
4 more elements
Dependencies are inferred from the claim text.