The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 1984
Filed:
Jun. 01, 1982
Emanuel Tward, Northridge, CA (US);
Tward 2001 Limited, Los Angeles, CA (US);
Abstract
A manometric method and instrument for the continuous detection and measurement of differential pressures which includes a uniquely configured multi-capacitor sensor system. The sensor system is formed of a first pair of plate type capacitors having like dielectric spaces within which a first strata of fluids is maintained and subjected to one pressure force and a second pair of plate type capacitors having like dielectric spaces within which a second strata of fluids is maintained and subjected to another pressure force. The dielectric spaces of each pair of capacitors are interconnected at their lower ends so that the pairs of dielectric spaces form the legs of a classic U-tube manometer whereby the first strata of fluids and the second strata of fluids assume equilibrium positions within their respective dielectric spaces in relation to the densities of such fluids and the respective applied pressure forces. The pairs of capacitors comprise all of the capacitance elements of an alternating current Wheatstone bridge circuit. Detection and measurement of the current value of the bridge is translated in linear relationship into a differential pressure value between the pressure forces applied to the manometric instrument.