Apparatus for performing a centrifugal field-flow fractionation comprising a seal and method
US8758210B2 · kind B2 · utility
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22References
12Claims
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Key dates
| Filing date | May 21, 2012 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | May 21, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for performing a centrifugal field-flow fractionation is disclosed. In an embodiment of the invention, radial rotary shaft seals are used for sealing the rotating parts of the shaft for carrying out the centrifugal field-flow fractionation and the stationary parts. Furthermore, a separate line is introduced for reducing the pressure differential across these seals. In such way, the driving force driving sample fluid across the seals is reduced, thereby reducing leakage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.