US PATENT SUBCLASS 338 / 161
.~.~.~ With element casing open over contact track

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}
160  DF  .~.~ Contact slides along in contact with element {3}
161.~.~.~ With element casing open over contact track

DEFINITION

Classification: 338/161

(under subclass 160) Subject matter wherein the resistance element is substantially entirely encased or enclosed by a casing or covering with no intervening space therebetween (i.e., the inner surface of the casing or covering is in contact with the outer surface of the resistance element), except for an open space in the casing directly over the portion of the resistance element where the contact slides.

SEE OR SEARCH THIS CLASS, SUBCLASS:

192+, for variable tap type resistors with angularly movable contacts, whose resistance element is enclosed.

226+, for incased, embedded or housed fixed resistors.

331, for resistors whose element is mounted in a groove in the base.