US PATENT SUBCLASS 123 / 406.7
.~.~.~ Temperature responsive

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}
406.69  DF  .~.~ Condition responsive valve in fluid path from vacuum source {1}
406.7.~.~.~ Temperature responsive

DEFINITION

Classification: 123/406.7

Temperature responsive:

(under subclass 406.69) Subject matter wherein the regulating means for varying spark ignition timing is responsive to changes in temperature of either (a) an engine component, (b) an engine fluid, or (c) the ambient environment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

406.55, for an internal combustion engine spark ignition timing electronic control responsive to temperature.

SEE OR SEARCH CLASS

374, Thermal Measuring and Testing,

100+, for temperature measuring devices, per se.