US PATENT SUBCLASS 123 / 360
.~.~.~.~ Circuit controls a fluid throttle operator (e.g., vacuum)

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}
350  DF  .~.~ Electrical sensing or regulating {3}
352  DF  .~.~.~ Engine speed sensing having an error signal producing circuit {7}
360.~.~.~.~ Circuit controls a fluid throttle operator (e.g., vacuum)

DEFINITION

Classification: 123/360

Circuit controls a fluid throttle operator (e.g., vacuum):

(under subclass 352) Subject matter in which the output of the circuit is used to control a throttle valve or speed adjusting mechanism that is fluid powered.

(1) Note. The fluid may be air (vacuum or pressurized), lubricating oil, fuel, etc.