.~ Movable contact electrically adjustable over length of resistance element {21}
135
.~.~ With zero setting or phasing
DEFINITION
Classification: 338/135
(under subclass 18) Subject matter including structure which permits movement or adjustment of the contact relative to the resistance element in addition to the movement or adjustment by the normal adjusting mechanism, to establish a desired preliminary setting of the contact relative to the resistance element, the structure maintaining the selected positioning or adjustment during operation of the normal contact moving mechanism; or including an adjustable stop or abutment for setting the relative position of the contact on the resistance element to provide zero resistance value between the contact and the end of the element.
(1) Note. This subclass usually includes structure which permits adjustment of the resistance element relative to its support, or adjustment of the contact with respect of its operating mechanism to establish a desired preliminary setting between the contact and the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
120, for a resistor with a contact adjustable over the length of the resistance element, wherein an additional resistor adjustably shunts part of the resistance element; subclass 121 for movable contact resistors with a nonlinearity correction; and subclass 131 for a ganged plurality of movable contact resistors which are individually adjustable.
