Mixing and dispersing apparatus
US4981365A · kind A · utility
9Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Jul 14, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F35/718
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A mixing and dispersing apparatus is shown in FIG. 1 having a supply line 32 to deliver powder to the vessel and open it near the base of the vessel so as to be below the normal liquid level in the vessel. The top of the vessel is connected to a vacuum source and the valve is arranged to be open only when pressure in the vessel is below a predetermined minimum and to close automatically when the pressure rises above that minimum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.