US PATENT SUBCLASS 338 / 172
.~.~.~.~ With switching

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
162  DF  .~.~.~ Contact angularly slidable {11}
172.~.~.~.~ With switching {1}
173  DF  .~.~.~.~.~> Contact separable from resistance element

DEFINITION

Classification: 338/172

(under subclass 162) Subject matter wherein the mechanically variable resistor with a contact angularly slidable on a resistance element is combined with a separate switch or includes switching structure as an inherent part of the resistor.

(1) Note. The switch and resistor may control the same or a different electric circuit. The resistor and switch are usually actuated by motion of the same shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:

179, for variable resistors having a rectilinearly slidable contact together with a series switch.

191, for variable resistors of the tap type with angularly movable contacts together with a switch.

198, for variable resistors generally together with a switch actuated by the resistor actuator.

200+, for variable resistors generally combined with a switch. SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers, appropriate subclasses, for electric switches, per se.