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. 28, 2009
Filed:
Mar. 30, 2005
Makoto Hirasawa, Aichi, JP;
Shohei Yoshiyasu, Aichi, JP;
Yoshiaki Matsubara, Aichi, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
An oxygen sensorincludes an oxygen detection element, which assumes a hollow tubular shape extending along the axis. The oxygen detection elementhas a closed tip end and an opened rear end. An internal electrode layeris formed on an inner circumferential surfaceof the oxygen detection element. The sensoralso has a terminal memberwhich is in contact with the internal electrode layerand in electrical connection therewith. The terminal memberhas press contact portionsandwhich come into press contact with the inner circumferential surfaceof the oxygen detection elementto hold the terminal memberin the oxygen detection element, and conduction portionswhich come into press contact with the internal electrode layeron the inner circumferential surfaceof the oxygen detection elementand into electrical connection with the internal electrode layer. Pressing force per unit area at the conduction portionsis smaller than that at the press contact portionsand