Cutter retention for rotatable cutter
US11053742B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2020 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Mar 7, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/42
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rotating cutter for a fixed cutter type bit includes an annular sleeve with a retainer having a plurality of inwardly extending tabs and a spindle cutter rotatably coupled to the annular sleeve. The spindle cutter includes a spindle extending into the annular sleeve and rotatable about a central axis of the annular sleeve, a base portion positioned between the retainer and a proximal end of the annular sleeve, and a cutter portion coupled to the spindle. The rotating cutter further includes at least one pin disposed between adjacent tabs of the plurality of tabs of the retainer to prevent axial movement of the base portion through the retainer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.