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:
Jul. 10, 2007
Filed:
May. 29, 2003
Masataka Taguchi, Gifu, JP;
Takahiro Hayashi, Gifu, JP;
Yasuhiro Fujita, Gifu, JP;
Yoshiaki Matsubara, Nagoya, JP;
Hitoshi Iimi, Aichi, JP;
Masataka Taguchi, Gifu, JP;
Takahiro Hayashi, Gifu, JP;
Yasuhiro Fujita, Gifu, JP;
Yoshiaki Matsubara, Nagoya, JP;
Hitoshi Iimi, Aichi, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A gas sensor comprises a cylindrical metallic housing, a sensor element having at a front end thereof a sensing portion and disposed axially in the housing with the sensing portion protruded from a front end of the housing, a sensor terminal fitted to a rear end of the sensor element to produce a signal output from the sensing portion, a first protective cover attached to a front end portion of the housing to cover the sensing portion and a second protective cover attached to a rear end portion of the housing to cover the sensor terminal. The first and second protective covers includes attachment portions attached around the front and rear end portions of the housing, respectively. At least one of the attachment portions of the first and second protective covers has a lower hardness than a remaining portion of the protective cover.