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. 31, 2002
Filed:
Dec. 05, 2000
Shoji Akatsuka, Aichi, JP;
Kouji Matsuo, Aichi, JP;
Masahiro Asai, Aichi, JP;
Satoshi Ishikawa, Aichi, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A gas sensor including a detecting element having electrodes on first and second surfaces of an oxygen ion conductive solid-state electrolyte; a main fitting having a fitting portion to be fitted into a mounting hole formed on a wall of the pipe defining a flow path for a gas-to-be-measured for holding the detecting element in such manner that the first surface is disposed via the mounting hole at an inner position of the pipe with respect to the fitting portion; a cylindrical cover of which one end is connected to an outer position of the pipe with respect to the fitting portion of the main fitting and the other end is provided with a cylindrical sealing member having an air hole for introducing air to the second surface on one end and a through hole through which a lead connected to both electrodes of the detecting element passes on the other end; and a water repellant filter having gas permeability for closing the air hole, characterized in that the water repellant filter is formed in a sheet shape and mounted on the air hole by means of an inserting member that can be inserted in the air hole.