Level sensors
US6925871B2 · kind B2 · utility
45Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 2003 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Jul 15, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S250/90
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A level detector comprises an array of light emitting devices mounted in a line parallel to an array of light receiving devices, the arrays being mounted within a housing capable of internally reflecting light from the emitting devices to respective receiving devices unless the respective parts of the level sensor are immersed in liquid. The outer internally-reflecting surface of the housing is preferable a continuous straight-line surface along the direction parallel to the arrays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.