US PATENT SUBCLASS 313 / 128
.~ Plural insulated electrodes with individual lead-in


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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

118  DF  SPARK PLUGS {22}
128.~ Plural insulated electrodes with individual lead-in


DEFINITION

Classification: 313/128

(under subclass 118) Subject matter having plural ignition spark electrodes which are insulated from the shell, and from each other, each of the so insulated electrodes having its own lead-in structure.

(1) Note. The spark plug may have three or more ignition spark electrodes, one of which is mounted on the shell, at least two of the others being insulated from the shell and having individual lead-in conductors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

123+, for spark plugs having plural series connected ignition gaps.

140, for spark plugs having a plurality of parallel connected gaps, e.g., having a plurality of ignition spark electrodes connected together which cooperate with the electrode mounted on the shell to form a plurality of parallel connected ignition gaps.

306+, and the subclasses specified in the notes thereto for other discharge devices having three or more electrodes.

SEE OR SEARCH CLASS

439, Electrical Connectors,

626+, and 709+ for electrical connector structure having a plurality of terminals which are insulated from each other mounted upon an insulating member.