.~ Movable contact electrically adjustable over length of resistance element {21}
137
.~.~ Plural contacts adjustable over single resistance element
DEFINITION
Classification: 338/137
(under subclass 118) Subject matter including a plurality of electrically separate contacts movable over the same resistance element or movable over a series of taps or other intervening structure connected to the same resistance element, or connected to different series of taps or other intervening structures which are connected to the same resistance element.
(1) Note. For classification here the contacts must be connected to separate terminals or through a circuit other than a mere conductor, such as another resistor. Subclasses 92+ provides for plural contacts which short-circuit a portion of a resistance element, and subclass 171 below provides for a resistor with an angularly movable contact having plural contact portions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
92+, for a mechanically variable resistor with a resistance element short circuiting means. See also (1) Note above.
120, for a variable resistor part of whose element is adjustably shunted by a resistor.
128+, for plural mechanically variable resistors, each resistor including a contact movable over a resistance element. 136, for a variable resistor whose contact is clamped on the resistance element.
171, for a resistor having a contact with plural contact portions angularly movable over the resistance element. See also (1) Note above.
