US PATENT SUBCLASS 338 / 92
.~ Resistance element adjustably short-circuited

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

68  DF  MECHANICALLY VARIABLE (E.G., RHEOSTAT) {24}
92.~ Resistance element adjustably short-circuited {5}
93  DF  .~.~> Compressible spring type
94  DF  .~.~> Liquid contact
95  DF  .~.~> With intervening structure between element and short-circuiting means (e.g., taps)
96  DF  .~.~> Spring contact strip progressively pressed along element
97  DF  .~.~> Unitary movable contact electrically bridges resistance portions

DEFINITION

Classification: 338/92

(under subclass 68) Subject matter wherein the resistor includes an elongated element together with conductive structure connected at spaced points being adjustable along the length of the element; or wherein the resistance element is bent upon itself so that two points along the length of the element adjustably contact electrically to effectively eliminate electrically the portion between the two points from the electric path through the resistor, i.e., a variable portion of the resistance element is shunted; or wherein a conducting mass such as a liquid is adjustably connected along the length of the element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77, for adjustable resistors of the plug box type.

79, for mechanically variable resistors with element winding and/or unwinding.

87+, for adjustable resistors wherein a contact adjustably penetrates into the element.

118+, for mechanically variable resistors wherein a contact moves over the length of the resistance element; and especially subclass 120, for such resistors whose element is adjustably shunted by an additional resistor; and subclasses 122+, for such resistors with coarse and fine resistance elements. SEE OR SEARCH CLASS

323, Electricity: Power Supply or Regulation Systems,

353, for regulation systems.