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:
Apr. 26, 2016
Filed:
Jan. 06, 2015
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Kenji Ban, Gifu, JP;
Yoshikazu Kataoka, Nagoya, JP;
Magoki Shimadate, Aichi, JP;
Tomoaki Kato, Nagoya, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A spark plug wherein an outer diameter of a first face that is a gap foliating face of the center electrode tip is denoted as R, an outer diameter of a second face that is a gap forming face of the ground electrode tip is denoted as R, a length of the gap is denoted as G, and an average distance of a distance between an end in the first direction of the first face and an end in the first direction of the second face and a distance between an end in the second direction of the first face and an end in the second direction of the second face is denoted as G, R<R, 0.5 mm≦R≦1.1 mm, 0.7 mm≦R≦1.2 mm, 0.6 mm≦G≦1.3 mm, and 1.4≦(R/R)×(G/G)≦1.8 are satisfied.