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. 21, 2020
Filed:
Aug. 07, 2017
Federal-mogul Llc, Southfield, MI (US);
James Lykowski, Temperance, MI (US);
Keith Hampton, Ann Arbor, MI (US);
Federal-Mogul Ignition LLC, Southfield, MI (US);
Abstract
A corona igniter () includes a metal shell () with a corona reducing lip () spaced from an insulator () and being free of sharp edges () to prevent arcing () in a rollover region and concentrate the electrical field at an electrode firing end (). The corona reducing lip () includes lip outer surfaces () being round, convex, concave, or curving continuously with smooth transitions () therebetween. The corona reducing lip () includes lip outer surfaces () presenting spherical lip radii (r) being at least 0.004 inches. The corona igniter () also includes shell inner surfaces () and insulator outer surfaces () facing one another being free of sharp edges ().