Fire or smoke barrier
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United States of America Patent
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Oct 26, 2021
Grant Date -
Dec 27, 2018
app pub date -
Dec 12, 2016
filing date -
Dec 14, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fire or smoke barrier (1) having a head box (2) for housing a curtain (4) which is open at its underside to allow the curtain to be deployed and withdrawn. The head box (2) houses a roller (3) for the curtain (4) to be rolled from for deployment and rolled back onto for withdrawal and attached at the bottom of the curtain (4) is a bottom bar (7) for weighing down the curtain (4) when deployed. The head box (2) has one or more apertures (14, 15) for cleaning air circulation and being provided at the, or each, aperture (14,15) with a spring (22) loaded trap (16,17) normally held open by a fusible link (31), the link fusing (31) in event of fire.
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