Patent ID: 9145259
Filing Date: 2015-09-29
Classification: B65G

Abstract:
1. A center column drive spiral conveyor system comprising: a rotating cylindrical drive tower having a lower end and a spaced apart upper end and having a central column, the drive tower adapted to rotate about a vertical axis of rotation; a plurality of parallel drive members coupled to the drive tower, the drive members extending in length from the lower end to the upper end of the drive tower; a conveyor belt extending helically around the drive tower, the drive members adapted to engage the conveyor belt; a center column drive that is adapted to rotate the center column, the center column drive including a drive ring having an upper ring coupled to the drive column and a lower ring, the upper ring adapted having a plurality of gear teeth and configured to rotate with respect to the lower ring; and a drive motor that is adapted to rotate the upper ring to cause the rotation of the drive tower and movement of the conveyor belt.