Progressing cavity stator with metal plates having apertures with englarged ends
US9133841B2 · kind B2 · utility
2Cited by
19References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Aug 23, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Progressing cavity devices and systems are provided. In one embodiment, a system includes a metal stator of a progressing cavity device. The metal stator includes metal plates with apertures that are rotationally offset to form a winding rotor cavity. At least one of the apertures that form the winding rotor cavity has an elongated profile with enlarged ends having widths greater than that across the middle of the at least one aperture. Additional systems, devices, and methods are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.