.~ Movable contact electrically adjustable over length of resistance element {21}
155
.~.~ Contact rocks along element or taps
DEFINITION
Classification: 338/155
(under subclass 118) Subject matter wherein the contact rocks over or along the resistance element, or the intervening structure between the element and contact such as the element taps.
(1) Note. For classification here the contact must rotate over in the element or taps in a small arc, in any event less than 360 deg.. Usually the contacting surface of the contact has a length comparable to the length of the element of tap path, and the contacting surface does not extend completely around the contactor. Where the contact rotates at least one revolution in passing over the length of the element or tap path classifications is in subclasses 157+ below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
96, for a mechanically variable resistor with an element short circuiting spring which may be progressively pressed over the element.
157+, for a mechanically variable resistor with a contact which rolls over the element or tap path. See also (1) Note above.
