US PATENT SUBCLASS 123 / 329
.~.~ Having means to retard spark (e.g., ignition timing)

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

319  DF  ENGINE SPEED REGULATOR {16}
320  DF  .~ Responsive to deceleration mode (e.g., engine acting as a brake) {7}
329.~.~ Having means to retard spark (e.g., ignition timing)

DEFINITION

Classification: 123/329

Having means to retard spark (e.g., ignition timing):

(under subclass 320) Subject matter in which the speed regulator includes means to retard the spark firing instant so that the plug fires closer to or after top dead center.