Spark plug and connector device therefor

Claim 1

IN COMBINATION, AN IGNITION CABLE, A SPARK PLUG AND A CONNECTOR DEVICE FORMING A SEALED ELECTRICAL CONNECTION BETWEEN SAID CABLE AND SAID SPARK PLUG: SAID CABLE COMPRISING AN ELECTRICALLY CONDUCTIVE CORE AND A SHEATH OF ELECTRICAL INSULATING MATERIAL SURROUNDING SAID CORE; SAID SPARK PLUG COMPRISING AN INSULATOR HAVING AT LEAST ONE EXTERNAL ANNULAR RAISED RIDGE AT THE UPPER END THEREOF AND HAVING A CENTERBORE THERETHROUGH WITH AN UPPER SECTION OF ENLARGED DIAMETER FORMING A CYLINDRICAL WELL COMMUNICATING WITH THE TOP OF SAID INSULATOR AND WITH A LOWER SECTION HAVING A CENTERWIRE HERMETICALLY SEALED THEREWITHIN, THE UPPER END OF SAID CENTERWIRE EXTENDING INTO SAID WELL; AND SAID CONNECTOR DEVICE COMPRISING A PROTECTIVE BOOT HAVING A RUBBER NECK PORTION FITTING SNUGLY AROUND THE INSULATING SHEATH ON SAID CABLE, SAID CABLE TERMINATING WITHIN SAID NECK PORTION, A RUBBER SKIRT PORTION INTEGRAL WITH SAID NECK PORTION AND SHAPED TO FIT SNUGLY AROUND THE UPPER END OF SAID SPARK PLUG INSULATOR IN SEALED COOPERATIVE ENGAGEMENT WITH SAID ANNULAR RIDGE, AN INNER TUBE PORTION INTEGRAL WITH SAID NECK PORTION AND SAID SKIRT PORTION AND EXTENDING INTO THE WELL OF SAID INSULATOR, SAID INNER TUBE PORTION BEING OF SMALLER DIAMETER THAN SAID NECK PORTION, AND A METAL CONDUCTOR IN SAID INNER TUBE PORTION AND EXTENDING INTO SAID NECK PORTION, SAID CONDUCTOR HAVING AN UPPER END SECURED IN ELECTRICAL CONTACT WITH THE CONDUCTIVE CORE OF SAID IGNITION CABLE AND A LOWER END FORMED AS A RESILIENT SPLIT PORTION IN SURROUNDING AND SPRING PRESSED MATING ENGAGEMENT WITH SAID CENTERWIRE, THE CONNECTION BETWEEN SAID CENTERWIRE AND SAID RESILIENT PORTION BEING ENCOMPASSED BY SAID INNER TUBE PORTION AND SAID INNER TUBE PORTION OF SAID PROTECTIVE BOOT ENGAGING SAID RESILIENT SPLIT PORTION TO THEREBY ASSIST IN MAINTAINING SAID RESILIENT SPLIT PORTION IN ELECTRICAL CONDUCTIVE ENGAGEMENT WITH SAID CENTERWIRE.