Chain drive system
US7222682B2 · kind B2 · utility
31Cited by
6References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 2004 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Jan 31, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/198
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A downhole tractor is provided that includes a motor, at least one rotatable screw powered by the motor, and a chain engageable with the at least one rotatable screw, whereby rotation of the at least one rotatable screw moves the chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.