Variable resistance fluid controller
US8640730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2006 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Jun 25, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87539
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid controller apparatus controls fluid flow, such as a solvent gradient flow, in a chromatography system. An apparatus includes a fluid-gradient controller having a fluid reservoir for containing a pump fluid and a pumping device connected to the fluid reservoir for receiving the pump fluid. The pumping device is in fluid communication with parallel-configured first and second solvent lines. The first and second solvent lines each contain a restrictor element and a solvent reservoir. During operation, the pumping device causes the pump fluid to flow through the first and second solvent lines in relation to their respective restriction devices. The pump fluid displaces solvent within the solvent reservoirs. The displaced solvent is mixed to form a solvent gradient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.