Motor driven pump for pumping viscous solutions
US4958988A · kind A · utility
17Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1987 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Jun 17, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/61
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A motor driven pump for pumping a viscous solution of a solute in a solvent comprises an impeller for pumping the solution into an outlet chamber. A shaft is rigidly connected to the impeller and is rotatably mounted in hydrodynamic slide bearings for driving the impeller. A rotor is rigidly mounted on the shaft for rotation therewith in response to actuation of a stator that is operatively associated with the rotor for causing rotation of the shaft. A lubrication system is provided for delivering pressurized solvent to the bearings such that solvent leaking from the bearings flows into the outlet chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.