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. 16, 2002
Filed:
Dec. 23, 1998
Keiichi Noda, Ichinomiya, JP;
Kazuo Taguchi, Nagoya, JP;
Hisaharu Nishio, Tokai, JP;
Katsuhisa Yabuta, Komaki, JP;
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
A gas sensor includes an outer cylinder a metallic shell and a sensor element The metallic shell is disposed inside the outer cylinder The sensor element is disposed in a through-hole formed in the metallic shell and is adapted to detect a component of a gas to be measured. A sealing material layer is mainly made of glass and is disposed between the outer surface of the sensor element and the inner surface of the metallic shell or between the outer surface of the sensor element and the inner surface of an insulator disposed between the metallic shell and the sensor element Cushion layer and are each made of a porous inorganic substance. At least either the cushion layer or is disposed so as to abut one end of the sealing material layer A gas sensor according to the present invention includes a sensor element featuring lower susceptibility to mechanical shock or thermal stress induced by different rates of contraction between a sealing material layer and an adjacent component element, as well as excellent durability.