Device for controlling a liquid flow in a tubular duct and particularly in a peristaltic pump
US6085574A · kind A · utility
43Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1997 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Jul 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/13
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for sensing gas bubbles in a liquid flowing through a duct, particularly the outlet duct of a peristaltic pump, including two piezoelectric components shaped and excited so that they vibrate axially. One of the components is a transmitter and the other is a receiver. One of the piezoelectric components is secured to a movable support, and its displacement is detected in order to detect excess pressure in the liquid flowing through the duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.