US PATENT SUBCLASS 123 / 347
.~ By changing valve timing

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

319  DF  ENGINE SPEED REGULATOR {16}
347.~ By changing valve timing {1}
348  DF  .~.~> Intake valve timing altered

DEFINITION

Classification: 123/347

By changing valve timing:

(under subclass 319) Subject matter in which the speed regulator acts to alter the timing of a cyclically operated valve controlling the flow of the fuel-air mixture to or from the combustion chamber.

(1) Note. Such a device which shuts the valve or which holds its lift to a constant valve less than full lift is classified in subclass 345. A device which holds the valve at full open is properly classified in this subclass.