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:
May. 04, 2021
Filed:
Aug. 21, 2018
Ngk Spark Plug Co., Ltd., Nagoya, JP;
NGK SPARK PLUG CO., LTD., Nagoya, JP;
Abstract
A particulate sensor () to be attached to a gas flow pipe EP through which a gas to be measured EG containing particulates S flows. The particulate sensor () includes a gas introduction discharge pipe (); a discharge element () including a discharge electrode member () maintained at a discharge potential DV and which electrifies particulates contained in the gas under measurement, and a sealed portion (C) located on a proximal end side GK of an element distal end portion and in which the discharge electrode member is disposed and insulated from the outer surface (CS) thereof; a surrounding member () maintained at a first potential SGND; and an electrically conductive glass seal () which establishes electrical communication between the surrounding member and the pipe (), and is in close contact with the outer surface of the sealed portion of the discharge element to provide gastight sealing.