Positive-drive spiral conveyor

  • US 10,189,645 B2
  • Filed: 06/18/2018
  • Issued: 01/29/2019
  • Est. Priority Date: 07/12/2010
  • Status: Active Grant
First Claim
Patent Images

1. A spiral conveyor comprising:

  • a drive tower extending from a bottom to a top and rotatable about a vertical axis;

    a plurality of parallel drive members extending in length on the periphery of the drive tower from the bottom to the top;

    wherein the parallel drive members angle outwardly away from the vertical axis toward the bottom in a lower portion of the drive tower;

    a conveyor belt positively driven without slip in a helical path around the drive tower by the drive members engaging an inside edge of the conveyor belt.

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