CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS AND RELATED METHODS
First Claim
1. A cutting element for an earth-boring tool, comprising:
- a diamond table positioned on a substrate;
an indentation in a cutting face of the diamond table; and
a shaped feature in the substrate at an interface between the diamond table and the substrate corresponding to the indentation in the cutting face of the diamond table.
5 Assignments
0 Petitions
Accused Products
Abstract
Cutting elements, earth-boring drill bits having such cutting elements and related methods are described herein. In some embodiments, a cutting element for an earth-boring tool may include a diamond table having an indentation in a cutting face thereof and a shaped feature in a substrate at the interface between the diamond table and the substrate, the shaped feature corresponding to the indentation in the cutting face of the diamond table. In further embodiments, a cutting element for an earth-boring tool may include a sacrificial structure positioned within an indentation in a diamond table. In additional embodiments, a method of forming a cutting element may include positioning a sacrificial structure in a mold, positioning a powdered precursor material over the sacrificial structure, and pressing and sintering the powdered precursor material to form a diamond table having an indentation in a cutting face formed by the sacrificial structure.
66 Citations
24 Claims
-
1. A cutting element for an earth-boring tool, comprising:
-
a diamond table positioned on a substrate; an indentation in a cutting face of the diamond table; and a shaped feature in the substrate at an interface between the diamond table and the substrate corresponding to the indentation in the cutting face of the diamond table. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. An earth-boring tool, comprising:
-
at least one cutting element comprising; a diamond table positioned on a substrate; an indentation in a cutting face of the diamond table; and a shaped feature in the substrate at an interface between the diamond table and the substrate corresponding to the indentation in the cutting face of the diamond table. - View Dependent Claims (20, 21)
-
-
22. A method of forming a cutting element, the method comprising:
-
positioning a sacrificial structure in a mold; positioning a powdered precursor material over the sacrificial structure; pressing and sintering the powdered precursor material to form a diamond table having an indentation in a cutting face formed by the sacrificial structure. - View Dependent Claims (23, 24)
-
Specification