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:
Sep. 29, 2020
Filed:
Sep. 09, 2016
Denso Corporation, Kariya, Aichi-pref., JP;
Masamichi Shibata, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
In a spark plug for an internal combustion engine, an insulator is held inside a housing such that a proximal end thereof projects in an axial direction. A center electrode is held inside the insulator such that a distal end thereof projects. A terminal fitting is connected to the proximal end of the insulator and provided such that electricity is conducted between the center electrode and the terminal fitting. A ground electrode forms a spark discharge gap between the distal end of the center electrode and the ground electrode. A first gap is formed between the proximal end of the insulator and the terminal fitting, a second gap is formed between a proximal end of the housing and the insulator, and at least one of the first gap and the second gap is filled with a filler.