Abstract: A passenger van is equipped with a drive mechanism for power operation of a slideable side door. The drive mechanism has a flexible drive cable that travels in a closed loop that includes cable portions that travel through a center track in opposite directions. The center track supports and guides a roller assembly that is attached to the rear of the side door. The roller assembly carries a cinch mechanism that selectively connects the roller assembly to a portion of the cable that is traveling in one direction to open the sliding door and that selectively connects the roller assembly to a portion of the cable that is traveling in the opposite direction to close the sliding door. The cinch mechanism is normally disconnected from the cable so that the side door can be opened or closed manually very easily.

Abstract: An electromagnetic clutch has a spool that houses an internal coil winding and that has a drive member attached to it. A molded plastic carrier cap is fitted onto an axial end of spool. Carrier cap has two thin, axially spaced slip rings that are secured to a peripheral wall of the carrier cap. The two slip rings are connected to input and output ends respectively of the coil winding. Coil winding is energized from a direct current source by stationery brush assemblies that are radially oriented and circumferentially spaced from each other. Each brush assembly includes a brush contact that is spring biased into contact with one of the slip rings. A plate rotor that has a drive member attached to it is next to the opposite axial end of the spool.