US PATENT SUBCLASS 374 / 1
THERMAL CALIBRATION SYSTEM


Current as of: June, 1999
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374 /   HD   THERMAL MEASURING AND TESTING

1THERMAL CALIBRATION SYSTEM {2}
2  DF  .~> By thermal radiation emitting device (e.g., blackbody cavity)
3  DF  .~> By immersion in liquid having controlled temperature


DEFINITION

Classification: 374/1

THERMAL CALIBRATION SYSTEM:

(under the class definition) Subject matter for determining the accuracy, operability, or operating characteristics of a device responsive to a thermal condition.

(1) Note. The calibration may involve either a single value or plural values including a continuous variation.

(2) Note. The thermal condition responsive device need not be a measuring or testing device, e.g. calibration of a thermostat is classifiable in this subclass.

(3) Note. A measuring or testing device having a reference or calibrating element or subsystem is classified with the measuring or testing device.

SEE OR SEARCH CLASS

73, Measuring and Testing,

1.01+, for calibrating or proving of a nonthermal condition responsive arrangement.

399, Electrophotography, 67+, for controls of fixing, particularly subclass 70 for temperature control of a warm-up or standby mode and subclass 94 for internal machine environment temperature.