Method and apparatus for characterizing the color properties of fluids
US6867861B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2002 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Mar 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/27
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for inspection of fluids, particularly dispersions and tints, having a fluid analysis cell with a cavity therein defining a fluid analysis chamber, fluid inlet and outlets extending from the cavity in opposite directions to enable fluid flow into and out of the analysis chamber, and a light transmitting probe and a light receiving probe extending within the cavity juxtaposed from each other across the flow path in spaced apart relation, with the probes being movable relative to each other, thus providing a fluid analysis chamber having an adjustable pathlength and allowing flow across and around the faces of the probes for pressure relief of the fluid, to provide accurate color measurements. The apparatus is particularly useful in the manufacture of dispersions and tints used in the manufacture of paints, so that the color of material being made can be accurately matched to a standard color in the wet state with confidence that the color will match in the dry state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.