Torque converter for use when drilling with a rotating drill bit
US7654344B2 · kind B2 · utility
17Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2006 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Mar 29, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/073
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A torque converter for use in drilling with a rotating drill bit, the purpose of the torque converter being to absorb impacts and bring about an axial movement of the drill bit when the torque exceeds a predetermined value. For this purpose the torque converter is composed of two cylindrical string parts connected through the bearing elements. The string parts are connected to each other through helical elements in such a way that relative rotation of the two cylindrical string parts brings about axial movement, which unloads the drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.