Downhole motor or pump components, method of fabrication the same, and downhole motors incorporating the same
US9309884B2 · kind B2 · utility
2Cited by
41References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2010 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | May 3, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Exemplary embodiments provide a progressive cavity pump or motor including a stator having a longitudinal bore and a rotor rotatably disposed within the longitudinal bore of the stator. The rotor includes a rotor core and a resilient outer layer formed of a resilient material bonded onto the outer surface of the rotor core. The resilient outer layer sealably connects the helical configurations on the outer surfaces of the rotor and the stator as the rotor rotates within the longitudinal bore of the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.