US PATENT SUBCLASS 338 / 150
.~.~ Resistance element moves

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

68  DF  MECHANICALLY VARIABLE (E.G., RHEOSTAT) {24}
118  DF  .~ Movable contact electrically adjustable over length of resistance element {21}
150.~.~ Resistance element moves {2}
151  DF  .~.~.~> With liquid contact
152  DF  .~.~.~> With knob mounting or enclosing the element

DEFINITION

Classification: 338/150

(under subclass 118) Subject matter wherein the resistance element is movably mounted in a frame, housing, or other structure supporting the element and contact to permit the adjustment of the contact over the length of the resistance element.

(1) Note. Included here are resistors whose contact is fixed and whose resistance element is rotated or moved linearly to effect adjustment of the contact over the length of the element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

43+, for resistors responsive to change of inclination in which the resistance element may move.

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

80+, for variable resistors of the liquid element type, especially subclass 86. 92+, for resistors having an element section short circuiting means.

SEE OR SEARCH CLASS

333, Wave Transmission Lines and Networks,

81, for attenuators which may have movable resistance structure.

336, Inductor Devices,

115+, for relatively movable inductor coils.