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. 10, 2020
Filed:
Mar. 10, 2020
Applicant:
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Inventors:
Assignee:
NGK SPARK PLUG CO., LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 13/32 (2006.01); H01T 13/54 (2006.01); H01T 13/39 (2006.01);
U.S. Cl.
CPC ...
H01T 13/32 (2013.01); H01T 13/39 (2013.01); H01T 13/54 (2013.01);
Abstract
A spark plug having excellent ignitability including a rod-shaped center electrode; a ground electrode that includes a facing portion facing a front end portion of the center electrode and forms a discharge gap between the facing portion and the front end portion of the center electrode; an insulator; a metal shell; and a cover portion that covers, from a front end side of the spark plug, the front end portion of the center electrode and the facing portion of the ground electrode to form a pre-chamber and includes injection holes that are through holes.