US PATENT SUBCLASS 123 / 389
.~.~.~ Intake manifold vacuum responsive

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

319  DF  ENGINE SPEED REGULATOR {16}
349  DF  .~ Having condition responsive means with engine being part of a closed feedback system (e.g., cruise control) {4}
378  DF  .~.~ Fluidic sensor or regulator {6}
389.~.~.~ Intake manifold vacuum responsive

DEFINITION

Classification: 123/389

Intake manifold vacuum responsive:

(under subclass 378) Subject matter where the speed regulator utilizes engine intake manifold vacuum as in input.