Device for separating the components of a liquid sample having higher and lower specific gravities
US4818386A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 8, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Oct 8, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0633
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device is provided for separating the components of a liquid sample by centrifugation by dividing that portion of the sample having a higher specific gravity from that portion having a lower specific gravity, by utilizing a dual component assembly arranged to move in an evacuated container into the area adjacent the two portions of the sample under centrifugal force. The assembly includes a substantially rigid core component which nests within a cup-shaped elastomeric component, and which components interact with each other to provide alternating dual seals and open flow paths in response to different pressure differentials on each side thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.