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US 4,782,704 AGranted
Mercury manometer
AssigneeG. S. Phillips
InventorJohn Webb
Life of this patent
Estimating the term…
Abstract
This invention relates to mercury manometers for a purge bubbler liquid level control system or the like. More particularly, this invention relates to mercury manometers comprising a mercury column with electrical contacts imbedded in the walls of the column for sensing specific liquid levels.
Claims6
A manometer containing an electrically conductive fluid, comprising in combination:
- a base plate including a fluid reservoir fluidly connected to a fluid column with an input connected to said reservoir and an output connected to an output of said column;
- a plurality of electrical contacts connected in electrical contact with said column;
- said column being alternatively vertically leftward and rightward configured to increase the effective length of said column relative to the overall length of said column to increase the resolution of the manometer, said alternating vertical leftward and rightward configuration of said column comprising alternating leftward column segments serially connected with rightward column segments at apex points to define an accordion shaped configuration;
- and
- one of said electrical contacts is positioned at each of a plurality of said apex points.
2 more elements
Dependencies are inferred from the claim text.