20130075518 | LARGE SCREEN DISPLAY DRIVE MECHANISM AND TRUSS - A large screen display drive mechanism. A drum is rotatably mounted to a truss by an axle that extends centrally through the drum and mounted by bearings, in turn, mounted to the truss. A large screen display is wrapable on the drum and is electrically connected by a cable assembly extending through the drum and outwardly thereof through a sprocket fixedly mounted to an end of the drum. The cable assembly is wrapped around a portion of the axle extending outwardly of the drum. A motor with sprocket and chain drives the sprocket attached to the drum. | 03-28-2013 |