Fluid meter construction
US5728948A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 10, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Jan 10, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/662
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid meter has a central cylindrical section in which time-of-flight ultrasonic measurements can be made between acoustic transducers disposed in spaced apart enlarged end sections. The central section has a smaller diameter than do the end sections. Transitional regions join the end sections to the central cylindrical section. The transducers are located at least in part in the transitional regions. The transitional regions in the intermediate central section are generally shaped such that in combination with the shape and location of the transducers, pressure drops along the central section along with back-reflections of acoustic pulses from the transitional regions are reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.