US PATENT SUBCLASS 123 / FOR 115
.~.~ Centrifugal timing mechanism (123/420)

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123 /   HD   INTERNAL-COMBUSTION ENGINES

FOR 101  DF  SPARK IGNITION TIMING CONTROL (123/406) {16}
FOR 113  DF  .~ Speed responsive (123/418) {2}
FOR 115.~.~ Centrifugal timing mechanism (123/420)

DEFINITION

Classification: 123/FOR.115

Centrifugal timing mechanism:

Subject matter wherein the engine spark timing control responds to a speed signal generated by a centrifugal device.