Liquid level gage and illuminator therefor
US7047806B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2003 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Apr 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/292
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a liquid level gage and an illuminator therefor. One embodiment of the liquid level gage includes a housing, a liquid column, an illuminator, and a power supply. The housing has a first or front end and a second or rear end. The liquid column includes a plurality of liquid column bodies connected to the front end of the housing. The liquid column also includes a first or front port assembly and a second or rear port assembly connected to each liquid column body. The liquid column is connected, either directly or indirectly, to a vessel. The illuminator includes a plurality of directed light source assemblies connected to the rear end of the housing. Half of the directed light source assemblies emit a first color light and half of the directed light source assemblies emit a second color light. A pair of bi-color directed light source assemblies (i.e., one directed light source assembly emitting the first color light and one directed light source assembly emitting the second color light) correspond to each liquid column body and pair of port assemblies (i.e., the front port assembly and the rear port assembly connected to the liquid column body). Each p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.