Progressive cavity pump including a bearing between the rotor and stator
US9404493B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2013 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Jan 19, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49245
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Techniques are generally described for a progressive cavity pump and methods for making and using a progressive cavity pump. In an example, a progressive cavity pump may include a stator, a rotor and/or a bearing. The stator may include a helical shaped interior with a first pitch. The rotor may be inside the stator. The rotor may include a helical shaped exterior with a second pitch. The second pitch may be different from the first pitch. The rotor may be effective to rotate with respect to the stator and effective to move eccentrically within the stator to define at least one cavity inside the stator. At least one bearing may be between the rotor and the stator. The bearing may be sized and shaped so that the rotor is effective to rotate inside the bearing and the bearing is effective to move eccentrically along with the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.