US PATENT SUBCLASS 338 / 141
.~.~.~ Helical or wound

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}
138  DF  .~.~ Element tapered {4}
141.~.~.~ Helical or wound

DEFINITION

Classification: 338/141

(under subclass 138) Subject matter wherein the tapered element is formed as two or more continuous closed coils or loops as a spiral, helix, or toroidal winding.

SEE OR SEARCH THIS CLASS, SUBCLASS:

218, for resistors with helical or wound tapered resistance elements.

263+, for resistors having a helical wound element with a casing or housing coated on.

267+, for incased, embedded or housed helical or wound resistors generally.

296+, for helical or wound resistors generally.