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BARRIER SYSTEMS WITH PROGRAMMABLE ACCELERATION PROFILE AND AUTO-RETRIES FOR PRESSURED EGRESS

  • US 20100294437A1
  • Filed: 04/28/2010
  • Published: 11/25/2010
  • Est. Priority Date: 04/29/2009
  • Status: Abandoned Application
First Claim
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7. A method of permitting egress through a flexible barrier deployed in a passageway to inhibit the migration of vapor through the passageway, wherein the barrier divides the passageway between a first and a second region, the method comprising:

  • receiving an egress request to move the barrier toward a retracted position;

    moving the barrier toward the retracted position with a drive mechanism in response to the egress request;

    monitoring a current level in the drive mechanism;

    stopping the drive mechanism if the current level exceeds a predetermined threshold;

    waiting a predetermined time period; and

    resuming the drive mechanism for moving the barrier toward the retracted position.

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