US PATENT SUBCLASS 123 / 339.23
.~.~.~.~ Controlling throttle bypass

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

319  DF  ENGINE SPEED REGULATOR {16}
339.1  DF  .~ Idle speed control {5}
339.14  DF  .~.~ Electrically operated control means {6}
339.19  DF  .~.~.~ By engine speed error feedback {4}
339.23.~.~.~.~ Controlling throttle bypass

DEFINITION

Classification: 123/339.23

Controlling throttle bypass:

(under subclass 339.19) Subject matter comprising a combustion mixture forming conduit having a means for varying its cross-sectional area and wherein (a) a fluid passage extends from a location upstream from the means for varying the cross-sectional area of the mixture forming conduit to a location downstream from the means for varying the cross-sectional area of the mixture forming conduit, and (b) a device controls the flow of fluid through the fluid passage

to vary the minimum engine output shaft operating speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

585+, for a charge-forming device having a quantity of auxiliary air or oxygen added to the combustible mixture.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation, appropriate subclasses for specific details of a valve of general utility.