Rotatable cutting elements for earth-boring tools and earth-boring tools so equipped
US10100584B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2017 |
| Grant date | Oct 16, 2018 |
| Priority date | — |
| Expiry date | Aug 1, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/633
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cutter assembly, which may include a rotatable cutting element disposable within a pocket of an earth-boring tool, a sleeve configured to receive the rotatable cutting element, and at least one retention mechanism configured to secure the rotatable cutting element within the sleeve. The rotatable cutting element may include a substrate, a table, which may be comprised of a superhard, polycrystalline material disposed on a first end of the substrate, and a recess extending into a second, opposite end of the substrate. The sleeve may comprise at least one radial bearing surface, a backing support sized, shaped, and positioned to extend into the recess of the rotatable cutting element, and at least one axial thrust-bearing surface located on the backing support and positioned to contact the substrate within the recess.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.