Patent ID: 8365710

Claim:
An internal combustion engine ignitor configured for attachment in an opening of a cylinder head, comprising: an insulator extending between a nose end and a terminal end; an electrode received in said insulator and extending outwardly from said nose end; a terminal received in said insulator and extending outwardly from said terminal end, said terminal being configured in electrical communication with said electrode; a metal shell surrounding at least a portion of said insulator and being free of external threads for attachment to the cylinder block; a tube having a lower end receiving said terminal end of said insulator therein, said tube extending to an upper end opposite said lower end, said lower end of said tube being configured to compress said shell into fixed position within the opening of the cylinder head; and a mount flange attached to said upper end of said tube, said mount flange compressing said lower end of said tube into abutment with said shell.