Device for supplying a powdery product in gravimetrically metered amounts to a pneumatic line
US4669921A · kind A · utility
7Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1985 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Jun 17, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G21/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gravimetric metering apparatus with a constant throughput is enclosed inside a sealed chamber and connected through the wall of the chamber, by a first pipe, to a pneumatic conveyor line operating under a pressure of n bars and, by a second pipe, to an intermittentently operated external loading hopper. The chamber is filled with gas under a pressure of n bars which is equal to that inside the pneumatic conveyor line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.