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:
Nov. 24, 2015
Filed:
Jun. 01, 2015
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Masahiro Inoue, Gifu, JP;
Kenji Moritani, Konan, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A spark plug including a ground electrode body and an electrode tip that is resistance welded to the ground electrode body and that has a discharge surface. In a specific sectional plane, a welding surface is located in the first direction from an outer surface of the ground electrode body. The welding surface includes a flat portion whose distance to the point Pin the first direction is 0.05 mm or smaller, and when a point Eand a point Eare defined as ends of the flat portion and a second direction is defined as a direction from the point Etoward the point E, in the second direction from the point E, a distance between the welding surface and the discharge surface in the first direction is smaller than a distance between the discharge surface and the point Ein the first direction.