Rolling cutter
First Claim
Patent Images
1. A cutting element for a drill bit, comprising:
- an outer support element having at least a bottom portion and a side portion; and
an inner rotatable cutting element, a portion of which is disposed in the outer support element and encased by the bottom portion and the side portion, the inner rotatable cutting element comprising;
a substrate; and
a diamond cutting face having a thickness of at least 0.050 inches disposed on an upper surface of the substrate; and
wherein a distance from an upper surface of the diamond cutting face to a bearing surface between the inner rotatable cutting element and the outer support element ranges from 0 to about 0.300 inches; and
wherein the inner rotatable cutting element further comprises a diamond base face at a lower surface of the substrate.
2 Assignments
0 Petitions
Accused Products
Abstract
A cutting element for a drill bit that includes an outer support element having at least a bottom portion and a side portion; and an inner rotatable cutting element. A portion of the inner rotatable cutting element is disposed in the outer support element, where the inner rotatable cutting element includes a substrate and a diamond cutting face having a thickness of at least 0.050 inches disposed on an upper surface of the substrate; and where a distance from an upper surface of the diamond cutting face to a bearing surface between the inner rotatable cutting element and the outer support element ranges from 0 to about 0.300 inches.
116 Citations
16 Claims
-
1. A cutting element for a drill bit, comprising:
-
an outer support element having at least a bottom portion and a side portion; and an inner rotatable cutting element, a portion of which is disposed in the outer support element and encased by the bottom portion and the side portion, the inner rotatable cutting element comprising; a substrate; and a diamond cutting face having a thickness of at least 0.050 inches disposed on an upper surface of the substrate; and wherein a distance from an upper surface of the diamond cutting face to a bearing surface between the inner rotatable cutting element and the outer support element ranges from 0 to about 0.300 inches; and wherein the inner rotatable cutting element further comprises a diamond base face at a lower surface of the substrate. - View Dependent Claims (2)
-
-
3. A cutting element for a drill bit, comprising:
-
an outer support element having at least a bottom portion and a side portion; an inner rotatable cutting element, a portion of which is disposed in the outer support element and encased by the bottom portion and the side portion, the inner rotatable cutting element comprising; a substrate; and a diamond cutting face having a thickness of at least 0.050 inches disposed on an upper surface of the substrate; and a retention mechanism for retaining the inner rotatable cutting element in the outer support element; wherein the outer support element comprises a first groove in an inner surface of the bottom portion of the outer support element, wherein a lower surface of the substrate of the inner rotatable cutting element comprises a second groove therein substantially matching the first groove, and wherein the cutting element further comprises at least one ball bearing disposed within a space defined by the first and second grooves. - View Dependent Claims (4, 5, 6, 7, 8)
-
-
9. A cutting tool, comprising:
-
a body having at least one blade thereon; at least one cutter pocket formed in the at least one blade; and at least one cutting element disposed in the at least one cutter pocket, wherein the cutting element comprises; an outer support element; and an inner rotatable cutting element, a portion of which is disposed in the outer support element, the inner rotatable cutting element comprising; a substrate; a diamond cutting face disposed on an upper surface of the substrate; and wherein the outer support element and the inner rotatable cutting element comprise bearing surfaces therebetween, wherein at least a portion of the bearing surfaces comprise diamond particles; and wherein the inner rotatable cutting element further a diamond base face at a lowermost surface of the substrate. - View Dependent Claims (10, 11)
-
-
12. A cutting element, comprising:
-
an outer support element; and an inner rotatable cutting portion, a portion of which is disposed in the outer support element, the inner rotatable cutting element comprising; a substrate; and a polycrystalline diamond cutting face disposed on an upper surface of the substrate; and wherein the inner rotatable cutting element comprises a bore extending therethrough to the diamond cutting face.
-
-
13. A cutting element for a drill bit, comprising:
-
an outer support element having at least a top portion and a side portion; and an inner rotatable cutting element, a portion of which is encased by the outer support element, the inner rotatable cutting element comprising; a substrate; and a diamond cutting face disposed on an upper surface of the substrate; wherein the outer support element further comprises a bottom portion that encases the inner rotatable cutting element; and wherein the cutting element is disposed in a cutter pocket formed in a blade of a cutting tool. - View Dependent Claims (14)
-
-
15. A cutting element for a drill bit, comprising:
-
an outer support element having at least a top portion and a side portion; and an inner rotatable cutting element, a portion of which is encased by the outer support element, the inner rotatable cutting element comprising; a substrate; and a diamond cutting face disposed on an upper surface of the substrate, wherein the outer support element further comprises a bottom portion that encases the inner rotatable cutting element; and wherein the inner rotatable cutting element is disclosed in a cutter pocket formed in a blade of a cutting tool, and wherein the blade comprises the outer support element.
-
-
16. A cutting element for a drill bit, comprising:
-
an outer support element having at least a top portion and a side portion; and an inner rotatable cutting element, a portion of which is encased by the outer support element, the inner rotatable cutting element comprising; a substrate; and a diamond cutting face disposed on an upper surface of the substrate, wherein the top portion and the side portion are integral.
-
Specification