Patent Document ID: 20090064757
Application ID: 12271589
Patent Flag: 0

Claim One:
1. A fluid level sensing apparatus for placement in a container comprising: a sensor further comprising an electrically conductive first body, an insulating layer having a thickness disposed over the first body to cover a first surface contact area, an electrically conductive second body having a second surface contact area disposed in opposition to the first body; a container progressively filled with a fluid in order to change a fluid level, wherein the fluid electrically couples a first fraction of the first surface contact area and a second fraction of the second surface contact area; a means for energizing the first body and the second body at a voltage; and a means for detecting the variability in voltage as the fluid level changes, wherein the thickness of the insulating layer varies along the first surface contact area as the level fluid changes to create forced variations in the voltage detected by the means for detecting the variability of the voltage.