Flow meter utilizing Karman vortex street
US4392385A · kind A · utility
6Cited by
8References
1Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 8, 1980 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Sep 8, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P5/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid conduit with a rectangular cross-section is divided into two parallel conduits. A vortex generating rod is disposed perpendicularly to the flow direction in one of the conduits. An ultrasonic wave is directed perpendicularly across the conduit to detect the Karman vortex streets. A sound absorbing material is located along the portion of the conduit wall where the ultrasonic waves exist for preventing the formation of standing waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.