Pump rotor seal apparatus and method
US7563087B2 · kind B2 · utility
0Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2006 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Jul 26, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C15/0038
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved pump and pumping method includes a circumferential positive displacement pump having two counter rotating rotors. A clearance gap is defined between the rotor shaft, and a body hub portion of the body that forms the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.