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:
Feb. 12, 1985
Filed:
Aug. 23, 1983
Tetsusyo Yamada, Nagoya, JP;
Yutaka Nakayama, Nagoya, JP;
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
The disclosed oxygen sensor has a plate-like oxygen pump element with electrodes, a plate-like oxygen concentration cell element with electrodes, 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, and an oxygen diffusion resistive layer deposited on that electrode of the pump element which faces said gap, whereby said pump element pumps out oxygen from said gap so as to produce such an oxygen partial pressure in the gap under the presence of said oxygen diffusion resistive layer that the oxygen concentration of a gas surrounding the oxygen sensor is detected by coaction of said two elements.