US PATENT SUBCLASS 340 / 588
.~.~.~ Time-temperature relationship (e.g., overtemperature exceeds predetermined interval or time-temperature integral)


Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
584  DF  .~.~ Thermal {8}
588.~.~.~ Time-temperature relationship (e.g., overtemperature exceeds predetermined interval or time-temperature integral) {1}
589  DF  .~.~.~.~> Rate of temperature change


DEFINITION

Classification: 340/588

Time-temperature relationship (e.g., overtemperature exceeds predetermined interval or time-temperature integral):

(under subclass 584) Subject matter where-in some time-temperature relationship (e.g., interval of

overtemperature or time-temperature integral) exceeds or falls below a predetermined value.

SEE OR SEARCH THIS CLASS, SUBCLASS:

588+, for an alarm having a time-delay circuit to indicate a persistent condition.