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:
Jun. 21, 2016
Filed:
Jan. 28, 2014
Denso Corporation, Kariya, Aichi-pref., JP;
Takanobu Aochi, Nishio, JP;
Takayuki Inohara, Okazaki, JP;
Shinichi Okabe, Aichi-ken, JP;
Masamichi Shibata, Toyota, JP;
Noriaki Nishio, Ichinomiya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A spark plugincludes a housing, an insulator, a center electrodeheld inside the insulatorsuch that a distal end portionprotrudes, a ground electrodeincluding a standing portionand an opposing portion, and a guide memberthat has a guide surfacefacing the standing portionof the ground electrodeand functions to guide a flow of an air-fuel mixture in a combustion chamber of an internal combustion engine to a spark discharge gap G formed between the center electrodeand the opposing portionof the ground electrode. The opposing portionof the ground electrodehas an opposing surfacethat opposes the center electrode, a back surfaceon the opposite axial side to the opposing surface, and a pair of side surfacesandthat connect the opposing surfaceand the back surface. Of the pair of side surfacesand, at least the side surfaceon the guide memberside is formed so as to make an obtuse angle with the opposing surface