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, 2012
Filed:
Sep. 02, 2009
Yoshiaki Matsubara, Nagoya, JP;
Takayoshi Atsumi, Konan, JP;
Kouji Matsuo, Kasugai, JP;
Kazuhiro Kouzaki, Ichinomiya, JP;
Masahiro Asai, Nagoya, JP;
Yoshiaki Matsubara, Nagoya, JP;
Takayoshi Atsumi, Konan, JP;
Kouji Matsuo, Kasugai, JP;
Kazuhiro Kouzaki, Ichinomiya, JP;
Masahiro Asai, Nagoya, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A gas sensor including a detection element having a detection portion; a metal shell that surrounds the detection element so as to expose the detection portion to a measured atmosphere; an outer tube that is fixed to the metal shell so as to cover a rear end side of the detection element; and a seal member that is contained inside the outer tube, the seal member having a lead wire insertion hole and a through hole that penetrates in the axial direction; a tubular holding member made of a resin having a lower coefficient of thermal expansion than the seal member, the tubular holding member being held inside the through hole, the tubular holding member having a ventilation hole; and a filter that covers the ventilation hole, the filter being joined to the holding member, the filter blocking water from passing therethrough, and the filter having air permeability.