Back to results
US 10,472,899 B2Granted
Cutting tools with rotating elements
AssigneeSmith International, Inc.
InventorsJibin Shi, Youhe Zhang
Life of this patent
Estimating the term…
Abstract
A cutting tool has a tool body, a plurality of blades extending radially from the tool body, at least one pocket in the plurality of blades, and at least one rolling element in the at least one pocket. The cutting tool may be a drill bit, with at least one rolling element in a pocket in a blade of the drill bit and at least partially exposed to the formation to be drilled.
Claims20
A cutting tool, comprising:
- a tool body;
- at least one blade extending radially from the tool body;
- at least one pocket in the at least one blade;
- a rolling element retained in the at least one pocket such that the rolling element is free to rotate about an axis of the rolling element and such that a full length of the rolling element extends beyond adjacent portions of a top face of the at least one blade, wherein the full length of the rolling element is exposed.
1 more element
A cutting tool, comprising:
- a tool body;
- at least one blade extending radially from the tool body;
- at least one pocket in the at least one blade;
- a rolling element having two end faces retained in the at least one pocket such that the rolling element is free to rotate about an axis of the rolling element and such that a portion of each of the two end faces extends beyond adjacent portions of a top face of one of the plurality of blades, wherein the portion of each of the two end faces is exposed.
1 more element
A cutting tool, comprising:
- a tool body;
- at least one blade extending radially from the tool body;
- at least one pocket in the at least one blade;
- a rolling element retained in the at least one pocket by a retention that extends greater than 180 degrees and less than 360 degrees around the rolling element such that the rolling element is free to rotate about an axis of the rolling element,
- wherein the retention includes a lip disposed on a side surface of the at least one pocket.
2 more elements
Dependencies are inferred from the claim text.