CUTTING ELEMENTS, EARTH-BORING TOOLS INCLUDING CUTTING ELEMENTS, AND METHODS OF FORMING CUTTING ELEMENTS
First Claim
Patent Images
1. A cutting element, comprising:
- a cutting table of a polycrystalline hard material comprising;
a cutting face;
a sidewall; and
at least one peripheral cutting edge portion between the cutting face and the sidewall, wherein a radius of curvature of the at least one peripheral cutting edge portion is greater than a radius of curvature of at least another peripheral edge portion between the cutting face and the sidewall.
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Accused Products
Abstract
A cutting element comprises a cutting table of a polycrystalline hard material including a cutting face, a sidewall, and at least one peripheral cutting edge portion between the cutting face and the sidewall. A radius of curvature of the peripheral cutting edge portion is greater than a radius of curvature of at least another peripheral edge portion between the cutting face and the sidewall. An earth-boring tool may include one or more such cutting elements.
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Citations
20 Claims
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1. A cutting element, comprising:
a cutting table of a polycrystalline hard material comprising; a cutting face; a sidewall; and at least one peripheral cutting edge portion between the cutting face and the sidewall, wherein a radius of curvature of the at least one peripheral cutting edge portion is greater than a radius of curvature of at least another peripheral edge portion between the cutting face and the sidewall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An earth-boring tool, comprising:
cutting elements secured to at least one structure, at least some of the cutting elements independently comprising; a cutting table comprising a polycrystalline compact of hard material, the cutting table comprising; a cutting face; a sidewall; and at least one peripheral cutting edge portion positioned between the cutting face and the sidewall, wherein the at least one peripheral cutting edge portion is positioned on the at least one structure at a location in which the at least one peripheral cutting edge portion will engage a subterranean formation to remove material therefrom during operation of the earth-boring tool, and wherein a radius of curvature of an outermost extent of the peripheral cutting edge portion is greater than a radius of curvature of an outermost extent of the cutting table. - View Dependent Claims (16, 17, 18, 19)
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20. An earth-boring tool, comprising:
cutting elements secured to at least one structure, at least some of the cutting elements independently comprising; a cutting table comprising a polycrystalline compact of hard material, the cutting table comprising; a cutting face; at least one sidewall; a chamfered surface extending between the cutting face and the at least one sidewall; and peripheral cutting edge portions defined at at least one interface between the chamfered surface and the at least one sidewall, wherein each peripheral cutting edge portion of the peripheral cutting edge portions is configured to be selectively positioned on the at least one structure in a position where the respective peripheral cutting edge portion will engage a subterranean formation to remove material therefrom, and wherein a radius of curvature of each of the peripheral cutting edge portions is greater than a radius of curvature of the at least another peripheral edge portion of the cutting table between the cutting face and the at least one sidewall.
Specification