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:
Jan. 20, 1998
Filed:
Oct. 30, 1995
Noriaki Kondo, Nagoya, JP;
Masaru Kondou, Nagoya, JP;
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
A detector for detecting a secondary voltage supplied to a spark plug of an engine comprises a rubber tube mounted on a high tension cord and equipped with a detecting electrode, and a shield case or shield layer enclosing the rubber tube. The rubber tube is made up of first and second semicylindrical rubber members joined together into a tubular shape. The detecting electrode is U-shaped and has a middle portion embedded in the first rubber member and left and right ends which project, respectively, from left and right joint surfaces of the first rubber member, and are sheathed in grooves in left and right joint surfaces of the second rubber member. A lead wire is connected to one of the left and right projecting ends of the detecting electrode. This structure of the secondary voltage detector can facilitate the production process.