Apparatus for controlled delivery of particulate material
US5286451A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1993 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | May 21, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/1006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus that provides controlled volumetric delivery of particulate material, particularly for delivery of a particulate sample for analysis. The apparatus includes a sample receiving tubular member that is vibrated or rotated relative to the sample container to agitate and fluidize a surface portion of the sample placed in an elongated container. A transporting gas carries the fluidized sample from the container through the tubular member. Sample delivery rate is controlled by a traversing mechanism that gradually inserts the moving tubular member into the upper fluidized portion of the sample. The apparatus allows total delivery of a known mass of a particulate sample at a predetermined delivery rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.