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. 07, 2017
Filed:
Mar. 10, 2015
Applicant:
Ngk Insulators, Ltd., Nagoya-shi, Aichi, JP;
Inventors:
Assignee:
NGK INSULATORS, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/407 (2006.01);
U.S. Cl.
CPC ...
G01N 27/407 (2013.01); G01N 27/4078 (2013.01);
Abstract
In a gas sensor, a powder compactseals a void space between an inner peripheral surfaceof metal-made main hardwareand a sensor element, and the inner peripheral surfacehas arithmetic average roughness Ra of 0.5 to 5 μm. The gas sensorincludes supportersand, which are arranged in a penetration hole of the main hardware, which allow the sensor elementto penetrate therethrough, and which press the powder compactin sandwiching relation from both sides in an axial direction. A surface of at least one of the supportersandhas the arithmetic average roughness Ra of not more than 0.5 μm.