Magnetic stirring apparatus
US4483623A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1983 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Apr 15, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F33/453
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved magnetic stirring apparatus capable of suspending solids in a liquid medium comprising: a vessel for containing fluids and solids, having walls, a bottom, and an opening; a stirrer having a magnetic impeller and a shaft, a means for rotating the magnetic impeller; and a closure; wherein the improvement is characterized by: PA0 (a) the shaft having; PA1 (i) an upper portion; and PA1 (ii) a narrower lower portion; an upper bearing surface being formed where the lower portion extends outwardly to the upper portion; PA0 (b) an elongated shaft support member which PA1 (i) is attached to the closure; and PA1 (ii) has an aperture dimensioned and configured to receive the lower shaft portion and allow free rotation, opposed aperture margins forming a lower bearing surface; and PA0 (c) a sling bearing formed by the upper bearing surface engaging the lower bearing surface in the direction of the vessel bottom, thereby suspending the stirrer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.