(under subclass 13) Subject matter including material or structure which readily absorbs or collects or facilitates the absorption or collection of fluent material such as liquids, gases, vapors, or humidity to which the resistor may be exposed, and usually which relinquishes all or part of the fluent material so absorbed or collected upon reduction in the intensity or termination of the exposure thereto, the material so collected or absorbed usually providing the electrical resistance, the value of the resistance depending on the amount of material absorbed.
(1) Note. The fluent material may be collected on the
surface or absorbed within other material of the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
80+, for mechanically adjustable or variable liquid resistors.
SEE OR SEARCH CLASS
23, Chemistry: Physical Processes, 230+, and 253+ for analytical and analytical control methods and apparatus respectively.
73, Measuring and Testing,
73+, for measuring the moisture content or absorption characteristics of materials.
200, Electricity: Circuit Makers and Breakers,
61.04+, for circuit making or breaking devices responsive to liquid or moisture.
318, Electricity: Motive Power Systems,
483, for motor control systems automatically operative in response to moisture content or wetness.
340, Communications: Electrical,
602, for electrical communications systems automatically responsive to moisture or humidity; and subclasses 628+ and 632+ for such systems responsive to smoke and gas; respectively.
