Downhole power drilling tool having multi-stage dual plunger eccentric gear mechanism
US11598151B2 · kind B2 · utility
0Cited by
5References
9Claims
0Family size
Assignee
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Key dates
| Filing date | May 27, 2021 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Aug 6, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B4/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole power drilling tool includes a flow distribution shaft, an outer pipe and a multi-stage eccentric gear driving mechanism which are coaxially arranged, the flow distribution shaft is suspended and supported in the outer pipe by the multi-stage eccentric gear driving mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.