Powder hopper with internal air assist
US5603566A · kind A · utility
5Cited by
16References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Nov 21, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F33/405
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A powder hopper with an internal air assist is provided with at least one vertically extending tube having a plurality of air outlet ports which are utilized in agitating the powder within a powder chamber. According to a first embodiment, the vertically extending tubes are rotated about a central axis. According to a second embodiment, the vertically extending tube is divided up into a plurality of zones which are sequentially provided with pulses of compressed air, thereby providing an equivalent air agitation rotating action without the requirement of rotating the vertically extending tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.