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:
Dec. 15, 1981
Filed:
Jan. 31, 1980
Kenneth S Evans, Blackpool, GB;
Charles P Cockshott, Coventry, GB;
Christopher M Pacaud, Shrewsbury, GB;
Lucas Industries Limited, Birmingham, GB;
Abstract
Apparatus for measuring the mass flow of a fluid comprises a hollow collector electrode assembly through which the fluid flows. The collector electrode assembly includes a central electrode disposed between and insulated from first and second outer electrodes. An ionizing electrode comprising a length of conductive wire is supported coaxially within the central collector electrode. A voltage source is provided for applying between the ionizing electrode and the collector electrode assembly a potential difference sufficient to ionize the fluid. The ions thereby produced at the ionizing electrode migrate towards the central collector electrode but are displaced in the direction of fluid flow by an amount dependent upon the mass flow of the fluid. A differential amplifier is responsive to the number of ions migrating to the outer collector electrodes to provide a measure of the displacement of the ions by the fluid flowing through the collector electrode assembly.