Abstract: An outlet terminal connector for electrical circuitry contained within a hermetically sealed housing. The connector includes a tubular shell having a threaded end portion composed of steel for releasably engaging a threaded mating cable connector and a base end portion composed of a different metal suitable for welding to the material of the housing. The connector shell is fabricated as a unitary assembly from a two layer explosively bonded laminate, one layer of which comprises steel and the other layer of which comprises the material of the connector base end portion.

Abstract: A method of making a tubular electrical insulator assembly for an igniter plug comprising the steps of making a recess (11) in one end of a tubular insulator (10); cementing a portion of a tubular semi-conductor (20) into the recess (11) so that the remaining portion of said semi-conductor (20) extends slightly beyond the end of said insulator (10); and grinding an annular chamfer (21) into the ends of the insulator (10) and semi-conductor (20).

Abstract: An igniter plug that has the forward insulator 80 connected to the outer electrode 24 by a metal ring 60 which is brazed at 62 to the insulator 80 and welded at 61 to the outer electrode 24.

Abstract: An igniter plug that includes a metal sleeve 10 to retain a central electrode 30 within a ceramic insulator 40 to prevent vibration of the electrode tip 35 during operation.