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:
Mar. 30, 2010
Filed:
Sep. 27, 2005
Hisaharu Nishio, Toukai, JP;
Takashi Nakao, Kasugai, JP;
Kazuhiro Kohzaki, Komaki, JP;
Keiichi Adachi, Kani, JP;
Hisaharu Nishio, Toukai, JP;
Takashi Nakao, Kasugai, JP;
Kazuhiro Kohzaki, Komaki, JP;
Keiichi Adachi, Kani, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A gas sensor including: a cylindrical metal shell; a detection element having a detection portion provided on a front end side thereof, the detection element being fixed inside the metal shell while the detection portion of the detection element protrudes from a front end side of the metal shell; and an element protection cap having ventholes, the element protection cap being fixed to the metal shell so that the detection portion of the detection element is covered with the element protection cap. A crimping cylindrical portion is provided which extends to a front end side of the metal shell. A protrusion portion of the element protection cap which abuts a metal ring packing is provided with concave and convex portions outward along an outer circumferential direction. As such, the metal ring packing is deformed so as to be interlocked with the concave and convex portions when the crimping cylindrical portion is compressively deformed.