System for accurately weighing solids and control mechanism for same
US7683271B2 · kind B2 · utility
3Cited by
13References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2006 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Mar 27, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G21/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for accurately weighing a mass of material, including a closed chamber (20) having a gas inlet (22) and a gas outlet (24). A scale (30) is disposed in the closed chamber (20). An inert gas supply, under positive pressure, is connected to the gas inlet (22) and a vacuum powered pressure regulator (100) is connected to the gas outlet (24) to maintain a predetermined pressure level within the closed chamber (20) and to substantially inhibit pressure fluctuations within the chamber (20) that may affect accuracy of the scale (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.