Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Reexamination Certificate
2006-04-28
2008-10-28
Williams, Hezron E. (Department: 2856)
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
C073S30400R
Reexamination Certificate
active
07441455
ABSTRACT:
The present invention refers to an apparatus for measuring the level and/or volume of a liquid stored in a container. The apparatus comprises at least one pair of electrodes mounted in the interior of the container in such a position that said electrodes are partially or totally immersed in the liquid stored in the container, said pair of electrodes acting as one of the capacitors of a Wien bridge to modify the output signal generated by the bridge-circuit to, in addition to measuring and indicating the volume of the liquid, also providing an indication of the quality of the liquid in the container and/or the ratio between two different types of liquid stored in the container.
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Bellamy Tamiko D
Frommer & Lawrence & Haug LLP
Indebrás Indústria Electromecãnica Brasileira Ltd
Santucci Ronald R.
Williams Hezron E.
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