US PATENT SUBCLASS 338 / 178
.~.~.~.~ Contact separable from element for switching

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}
176  DF  .~.~.~ Contact rectilinearly slidable {6}
178.~.~.~.~ Contact separable from element for switching

DEFINITION

Classification: 338/178

(under subclass 176) Subject matter wherein the rectilinearly slidable contact is adapted to separate from the resistance element for switching.

(1) Note. Subject matter generally found in this subclass includes a resistance element engaged by a rectilinearly movable contact with the contact being adapted to separate or leave the resistance element to open the electrical circuit formed therethrough as by lifting from or sliding out of engagement with the resistance element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

74, for a resistor having a rectilinearly slidable contact in or on a lamp socket and which may include switching.

172+, for a variable resistor having an angularly slidable contact together with switching.

179, for a variable resistor having a rectilinearly movable contact together with a series switch.

191, for a tap type resistor having angularly movable contact together with a switch. 200+, for variable resistors generally with switches.

215, for a fixed resistor combined with a switch.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

76+, for switches operated by a reciprocating contact.