Measurement of fluid parameters
US11573109B2 · kind B2 · utility
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1References
16Claims
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Assignee
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Key dates
| Filing date | Nov 19, 2019 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | May 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/4133
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An instrument incorporating a refractometer for measuring parameters of a fluid such as a metalworking fluid, avoids impairment of measurement accuracy due to contact of entrained air and oil with a refractometer window by temporarily interrupting the flow of the fluid through a refractometer chamber and orienting the window so that air and oil will readily separate from the window during the interruption of flow. Continued flow of metalworking flow while refractive index measurements are taken can be achieved by the use of by-pass valving arrangements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.