Patent ID: 8985496
Filing Date: 2015-03-24
Classification: B21C,B65H

Abstract:
1. A drum assembly, comprising: a post; expandable spokes, wherein each of the expandable spokes extends away from the post and has a distal end movable between a retracted position and an extended position; first and second spoke frames mounted to the post, wherein each of the first and second spoke frames includes a plurality of the expandable spokes; a plurality of drum segments each mounted to the distal end of one of the expandable spokes of the first spoke frame and to the distal end of one of the expandable spokes of the second spoke frame, wherein the drum segments extend parallel to the post; and a plurality of mechanical actuators each extending between the post and one of the expandable spokes or one of the drum segments, for moving the expandable spokes between the retracted and extended positions.