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Overhead Roll-Up Door Having At Least Two Motors

  • US 20130112357A1
  • Filed: 12/21/2011
  • Published: 05/09/2013
  • Est. Priority Date: 11/04/2011
  • Status: Active Application
First Claim
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1. An overhead roll-up door assembly for a vertically moving door to permit and prohibit access to an opening, the door assembly comprising:

  • a flexible door panel;

    a shaft capable of rotating to vertically move the flexible door panel; and

    ,at least two motors configured to rotate the shaft.

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