Roller reamer compound wedge retention
US9157282B2 · kind B2 · utility
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19References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2012 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | May 3, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/28
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A roller reamer includes a roller assembly deployed in a corresponding axial recess in a tool body. The roller assembly is retained in the axial recess via compound wedging action provided by at least one retention assembly. The retention assembly includes first and second wedges, the first of which converts a substantially radially directed force to an axially directed force and the second of which converts the axially directed force to a cross-axially directed retention force that retains the roller assembly in the axial recess.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.