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:
Oct. 14, 2014
Filed:
Nov. 03, 2011
Takashi Nakashima, Inuyama, JP;
Takashi Nakashima, Inuyama, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A protector () of a gas sensor () includes an inner protector () and an outer protector (). The inner protector accommodates a gas sensor element () and has a tubular side wall () having inner gas introduction holes (), and a bottom wall (). The outer protector has a tubular side wall () having outer gas introduction holes (), a frustum-like taper wall () tapering frontward and an outer gas discharge hole () formed inside a front end edge () of the taper wall. When SL represents an area defined by the front end edge of the taper wall, the area S of the opening of the outer gas discharge hole satisfies the relational expression ½×SL≦S≦SL. A cover portion () and a bottom wall () are partially away from each other along the axial direction, thereby forming side openings ().