Patent ID: 6807933
Filing Date: 2004-10-26
Classification: H01T

Abstract:
A spark plug-type ignition device for insertion into the combustion chamber of an internal combustion engine, and comprising:a threaded metallic body having an external electrically conductive power supply extension; an electrical insulator joined to said threaded metallic body and having an outer surface; an electrical series of a plurality of consecutive spaced-apart electrodes; and wherein said plurality of spaced-apart electrodes define at least two sparking gaps; the first of said electrical series of spaced-apart electrodes being partially contained within and projecting from the outer surface of said electrical insulator and electrically connected to said threaded metallic body, the last of said electrical series of spaced-apart electrodes electrically connected to said electrically conductive power supply external extension of said threaded ignition device body, and each one of said sparking gaps separating a different pair of adjacent electrodes in said electrical series of spaced-apart electrodes, wherein each of said electrodes are partially embedded in said electrical insulator, wherein outer ends of said electrodes project above said outer surface of said electrical insulator and are individually moveable to adjust said sparking gaps.