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:
Mar. 20, 1979
Filed:
Aug. 22, 1977
Abstract
A platinum reference electrode is disposed on the surface of a blind bore formed in a body of solid zirconia electrolyte and two semi cylindrically shaped measuring electrodes one platinum the other gold are disposed on the outer surface of the body. A first annular insulator supports the body within the casing and defines two chambers on either side thereof while a second annular insulator supports and presses lead wires against the measuring electrodes. A cylindrical connector is inserted into the blind bore to provide good electrical connection between the platinum reference electrode and a lead line. Atmospheric air enters the first chamber and the blind bore while exhaust gases enter the second chamber and contact the measuring electrodes; the platinum/platinum and platinum/gold electrodes produce markedly different signals one of which is used to recalibrate the other as the peak output voltages decrease with time and temperature.