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:
Jun. 14, 1988
Filed:
Jan. 20, 1987
Alex D Colvin, Oak Park, MI (US);
James W Butler, Dearborn Heights, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
The invention is directed to an instrument for measuring the absolute electrical conductivity of liquids, which instrument may be employed on-line in a recirculating paint bath to measure the conductivity of the paint. The instrument comprises a four electrode probe and a meter which comprises a device for generating and controlling an AC current connected to the first electrode such that a constant AC voltage is maintained across the second and fourth electrodes and a device for measuring and detecting an AC current connected to the third electrode, wherein the fourth electrode is maintained at the same potential as a nearby ground.