Fluid property measuring device
US4644781A · kind A · utility
10Cited by
13References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1984 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Dec 7, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2153
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Presented is a fluid property measuring device which can be used to measure he viscosity, the density, the volumetric flow rate, and the mass flow rate, of a fluid without using moving parts. The fluid property measuring device comprises a linear fluid resistor, a nonlinear resistor, and a linear, fluid property independent, volumetric flowmeter, Two nonlinear resistors, or two linear resistors, may be used instead of a linear and nonlinear resistor. The linear, fluid property independent, volumetric flowmeter comprises a fluidic negative feedback oscillator in fluid connection with a fluidic buffer laminar proportional amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.