Ultrasonic micro-sensor for level leak alert and interface detector
US5735166A · kind A · utility
2Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1994 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Dec 12, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/2965
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic sensor for detecting the presence of a liquid having an elongated body of plastic material with spaced arms at one end defining an air gap between the arms with each arm having a piezoelectric element at its inner face. The body houses a circuit board on which components of an ultrasonic sensing circuit that reacts to produce a signal when liquid is present in the air gap. The body is small in dimensions and is flat making it easy to install into restricted space applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.