BARRIER SYSTEMS WITH PROGRAMMABLE ACCELERATION PROFILE AND AUTO-RETRIES FOR PRESSURED EGRESS
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United States of America Patent
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Issued Date -
Nov 25, 2010
app pub date -
Apr 28, 2010
filing date -
Apr 29, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Barrier systems and associated methods, including vapor and/or fire barrier systems, are disclosed herein. One aspect of the invention is directed toward a barrier system that includes a barrier that is moved between a deployed position and a retracted position. The flexible barrier is configured to prevent migration of smoke or other harmful vapor, but to allow egress through the barrier upon request. A pressure gradient across the barrier can cause the barrier to bow and inhibit raising the barrier. A control system directs a drive system to stop raising the barrier, wait a predetermined time, and then raise the barrier again. In some embodiments, the barrier can be returned toward the deployed position before raising the barrier again.
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