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:
Dec. 06, 1983
Filed:
Feb. 12, 1982
Nissan Motor Company, Limited, Yokohama, JP;
Abstract
An oxygen sensing element of the type having a solid electrolyte oxygen concentration cell formed as a laminate of thin layers on a ceramic substrate in which a heater is embedded and end portions of lead wires are inserted. To enhance reliability of insulation between a lead wire through which heater current flows and lead wires connected to the concentration cell electrodes, the end portion of the heater lead wire is inserted into the substrate so as to make close contact with a terminal portion of the heater over substantially the entire length thereof and is completely shielded from environmental atmosphere by the substrate. Accordingly, even though a carbonaceous substance may be deposited on the substrate surface during practical use of the element, the possibility of heater current leaking of the concentration cell is obviated.