Patent ID: 8568181
Filing Date: 2013-10-29
Classification: H01T

Abstract:
1. A method of forming a spark plug including an insulator having a first section at a first end of the insulator, a second section, and a third section at a second end of the insulator opposite the first end of the insulator, wherein the second section is disposed between the first and third sections, the insulator further including a channel formed between the second and third sections and a first shoulder formed between the first and second sections, a two-piece outer shell disposed about the insulator, and a center electrode disposed within a passage in the insulator, the method comprising the steps of: inserting the insulator into the two-piece outer shell such that: overlapping the first end of the second piece of the outer shell to the second end of the first piece of the outer shell at the first shoulder; and crimping the second end of the second piece of the outer shell around the second shoulder to extend into the channel of the insulator.