Magnetic impeller means for a mixing vessel
US4993841A · kind A · utility
47Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1987 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Feb 5, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F35/4112
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Mixing vessel for sterile fluids, having a closed recess forming an integral part of the bottom wall of said vessel. An externally mounted rotatable drive unit on said vessel has means for establishing a magnetic coupling with an impeller inside the vessel. The hub of said impeller is cup-shaped and supported on bearing means on the inner end of the recess with a certain radial play to the wall of said recess, coaxially with said coupling means, and has substantially radially extending passageways between inner and outer hub surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.