Importance

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Abstract

A fire damper assembly has a damper mounted in an air duct for movements between air passing position in which the damper enables air to flow through the duct and another position in which the damper blocks the passage of air through the duct. A strut composed of joined but separable components normally underlies the damper and supports the latter in the air passing position. The strut may be moved from its damper engaging position to a damper-free position while the separable components remain joined. One end of the strut is pivoted to the frame for swinging movements between damper engaging and damper-free positions and may have its opposite end manually detached from the frame, thereby enabling the damper to move to its air-blocking position. Both the damper and the strut may be returned to their respective positions in which the damper is supported in the air-passing position, and the strut may be moved between its damper-engaging and damper-disengaged positions manually and without requiring the strut to be visible.

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First Claim