Fluid composition and volumetric delivery control
US4767279A · kind A · utility
42Cited by
13References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1987 |
| Grant date | Aug 30, 1988 |
| Priority date | — |
| Expiry date | Jun 20, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inner short-term pressure sensitive feedback loop is combined with an outer long-term volumetric delivery feedback loop to supply a substantially constant volumetric flow of mixed fluids to a load. The invention has particular utility in the controlled delivery of solvents for liquid chromatography.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.