US PATENT SUBCLASS 123 / 406.71
.~.~ Fluid delay between vacuum source and actuator (e.g., fixed restriction)

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

406.11  DF  SPARK IGNITION TIMING CONTROL {5}
406.67  DF  .~ Vacuum timing control {5}
406.71.~.~ Fluid delay between vacuum source and actuator (e.g., fixed restriction)

DEFINITION

Classification: 123/406.71

Fluid delay between vacuum source and actuator (e.g., fixed restriction):

(under subclass 406.67) Subject matter wherein the regulating means includes an element which hinders the flow of gas at less than atmospheric pressure between (a) the source of the gas at less than atmospheric pressure and (b) the enclosed space that supplies and transmits a measured amount of energy for varying spark ignition timing.