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:
May. 22, 1984
Filed:
Jul. 26, 1982
Applicant:
Inventors:
Tetsusyo Yamada, Nagoya, JP;
Yutaka Nakayama, Nagoya, JP;
Assignee:
NGK Spark Plug Co., Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204412 ; 204425 ; 204426 ;
Abstract
The disclosed oxygen sensor has a plate-like oxygen pump element with electrodes, a plate-like oxygen concentration cell element with electrodes, and a means to couple the two elements in parallel to each other while forming a gap between those electrodes of the two elements which face with each other, so that the oxygen concentration cell element measures a ratio between oxygen concentration in said gap and oxygen concentration of a gas surrounding outside of the oxygen sensor, while said oxygen pump element causes diffusion of oxygen between said gap and the outside of the oxygen sensor.