Submersible pump utilizing magnetic clutch activated impeller
US8721267B2 · kind B2 · utility
1Cited by
18References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Sep 14, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D15/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pumping apparatus comprises a rotatable shaft coupled to a motor. At least one control structure is mounted on the shaft, and at least one impeller is carried by the shaft. The impeller is adapted to rotate independently of the shaft so as to pump a fluid. The apparatus also comprises a magnetic coupling between the control structure and the impeller. Further, the impeller is adapted to translate axially along the shaft in response to a change in downstream pressure to alter the strength of the magnetic coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.