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. 17, 2013
Filed:
Dec. 22, 2009
Applicants:
Hiroyuki Kameda, Aichi, JP;
Yoshikuni Sato, Aichi, JP;
Daisuke Nakano, Aichi, JP;
Naofumi Yamamura, Aichi, JP;
Daisuke Kasahara, Aichi, JP;
Inventors:
Hiroyuki Kameda, Aichi, JP;
Yoshikuni Sato, Aichi, JP;
Daisuke Nakano, Aichi, JP;
Naofumi Yamamura, Aichi, JP;
Daisuke Kasahara, Aichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01T 13/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A plasma jet spark plug capable of preventing a channeling progress and having excellent heat conduction. The plasma jet spark plug comprised of: a ceramic insulator having a small diameter portion which assumes a linear shape in an axial direction, and a center electrode has an outer diameter increasing in the order of a frontmost portion, a step portion, a front end portion and a body portion.