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:
Apr. 10, 2001
Filed:
Dec. 08, 1997
Applicant:
Inventor:
Werner Gruenwald, Gerlingen, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/741 ;
U.S. Cl.
CPC ...
G01N 2/741 ;
Abstract
An oxygen measuring sensor is proposed, having a pump cell (,) with outer and inner pump electrodes (,) disposed on a solid electrolyte (,) which conducts oxygen ions, of which the inner pump electrode (,) is exposed in a diffusion conduit (,) to the gas to be measured. A further electrode (,) of a measuring cell (,) is disposed in the diffusion conduit (,) behind the inner pump electrode (,) in the direction of diffusion, at which a partial oxygen pressure, which lies at least approximately in the vicinity of lambda=1, can be set by means of the pump cell (,), so that the pump cell (,) operates outside of the limiting current range of the current/voltage characteristic curve.