US PATENT SUBCLASS 338 / 80
.~ Liquid resistance element

Current as of: June, 1999
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338 /   HD   ELECTRICAL RESISTORS

68  DF  MECHANICALLY VARIABLE (E.G., RHEOSTAT) {24}
80.~ Liquid resistance element {4}
81  DF  .~.~> Electrode separable from liquid element for switching
82  DF  .~.~> Adjustable insulating barrier between electrodes
83  DF  .~.~> Variable electrode separation {2}
86  DF  .~.~> Level of liquid element adjustable on electrodes (e.g., electrodes move up and down in element)

DEFINITION

Classification: 338/80

(under subclass 68) Subject matter wherein the resistance element is a liquid, the resistance value of the resistor being changed as by modifying the dimensions of the element or the spacing between terminals or electrodes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

27, for a resistor with a liquid element whose resistance

value is responsive to ambient temperature; subclass 38 for such resistors whose resistance value is responsive to fluid or gas pressure; and subclass 44 for such resistors which are gravity stabilized or with an inertia actuator.

56, for a resistor whose element constitutes a circulating cooling medium.

88, for penetrating type resistors with a powdered resistance element.

100, for compressible type resistors with a granular resistance element. 114+, for deformable variable resistors. 156, for variable resistors having a liquid contact movable over the resistance element.

222, for a resistor generally with a liquid element.

223, for a resistor generally with a granular or powdered element.

SEE OR SEARCH CLASS

323, Electricity: Power Supply or Regulation Systems,

296, for regulation systems having a liquid resistor.

329, Demodulators, appropriate subclasses for demodulator with liquid element.