Pump rod drive and torque release mechanism
US6289986A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2000 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Feb 25, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D11/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pump rod drive and torque release mechanism for use in association with a downhole pump positioned within a well. The pump rod drive and torque release mechanism comprises a central housing having a generally hollow interior, a drive shaft received within the central housing, a drive rod received within the central housing, and a torque transfer mechanism positioned within the central housing. The drive shaft may be operatively connected to a pump rod rotator to impart rotational movement to the drive shaft. The drive rod may be operatively connected to a downhole pump so as to enable transference of rotational energy from the drive rod to the downhole pump. The torque transfer mechanism has an engaged position wherein it operatively connects the drive shaft to the drive rod such that rotation of the drive shaft causes rotation of the drive rod. The torque transfer mechanism also has a disengaged position wherein it operatively disconnects the drive shaft from the drive rod. When it is in its disengaged position, the torque transfer mechanism permits rotation of the drive rod relative to the drive shaft and a release of torque exerted on the drive rod by fluid present in the well…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.