Fluid level detector
US8850883B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2010 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Jun 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/2965
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transducer for use in a fluid detector for determining a presence of a fluid within a container, the transducer comprising a piezoelectric element that outputs an ultrasonic signal in response to an input electrical signal, characterized in that said transducer further comprises, a lens with an upper portion, a lower portion, and a focal point, the upper portion including a curved surface with convex side. The piezoelectric element is coupled to the upper portion of the lens so that, when the lens is disposed adjacent an outer surface of a wall of the container such that the lens is intermediate the piezoelectric element and the wall, the lens focuses the ultrasonic signal toward the focal point of the lens and on the inner surface of the wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.