Pumping device for fluids
US4008985A · kind A · utility
10Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1975 |
| Grant date | Feb 22, 1977 |
| Priority date | — |
| Expiry date | Jan 24, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/431
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pumping device for fluids, in particular for low-viscosity liquids such as washing suds or rinsing water, having a pump impeller whose flexible vanes rotate in an annular chamber, and a synchronous drive motor, the elasticity of the pump vanes being sufficient that the required accelerating moments during starting do not exceed the maximum torque produced by the motor, and the drive motor undergoes torsional vibrations during the starting phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.