Rapid analysis of functional fluids
US7754488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2004 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Jul 10, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2882
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method to analyze the condition of a functional fluid comprising: Further an apparatus for analyzing functional fluids is disclosed in the form of a test medium consisting of an absorbent or nonabsorbent material which has been treated with a chemical indicator, marker substance or a developer or detector reagent upon which a sample of the fluid to be tested is placed. The components in the treated test medium react with components in the test fluid providing a visual indication, for example a color change, to judge the condition, the presence of a marker substance or another parameter of the fluid. The functional fluid may be a lubricant, fuel or other functional fluid of innumerable sources, including internal combustion engines, turbines, transmissions, differentials, pumps, metalworking operations, cooling systems, etc, and be either organic solvent or aqueous based.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.