(under the class definition) Subject matter wherein an inner surface of a belt* defines an area within a closed loop; and wherein a pulley* is located outside of said area and has a drive face in contact with a surface of the belt opposite the inner surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
118, for a device for selectively shifting a pulley into and out of engagement with the exterior surface of a belt.
121, for a device for selectively shifting a belt so that its exterior surface is engaged or disengaged with a pulley. [figure]
