US PATENT SUBCLASS 374 / 174
.~.~ By conductive fluid or work function within sensor (e.g., ionization)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


374 /   HD   THERMAL MEASURING AND TESTING

100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13}
163  DF  .~ By electrical or magnetic heat sensor {13}
174.~.~ By conductive fluid or work function within sensor (e.g., ionization)

DEFINITION

Classification: 374/174

By conductive fluid or work function within sensor (e.g., ionization):

(under subclass 163) Subject matter wherein the thermal sensor includes an envelope having a fluid or a vacuum therein, and electrodes to provide an electric current or space discharge therein, the temperature being determined by its effect on the discharge.

(1) Note. The temperature effect may be produced by variation in work function, ionization, or thermoelectric potential.