US PATENT SUBCLASS 361 / 263
.~.~ With spark coil or transformer

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

247  DF  IGNITING SYSTEMS {3}
253  DF  .~ For electric spark ignition {7}
263.~.~ With spark coil or transformer

DEFINITION

Classification: 361/263

With spark coil or transformer:

(under subclass 253) Subject matter wherein the energy for the ignition spark is provided by a spark coil or transformer connected to the spark electrodes.

(1) Note. "Spark coil" includes induction coils having make-break contacts in the primary circuit.

SEE OR SEARCH CLASS

336, Inductor Devices, appropriate subclasses for structure

of coil or transformer.