Fire damper

A fire damper including a frame and a plurality of blades rotatably mounted to the frame such that each blade is rotatable about a respective rotational axis between an open rotational position and a closed rotational position, each blade including at least one substantially planar portion; and a si...

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Bibliographische Detailangaben
1. Verfasser:	Holder, Gary Brian
Format:	Patent
Sprache:	eng
Schlagworte:	BUILDING CEILINGS FIRE-FIGHTING FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS HUMAN NECESSITIES INSULATION OR OTHER PROTECTION OF BUILDINGS LIFE-SAVING ROOFS WALLS, e.g. PARTITIONS
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Beschreibung
Zusammenfassung:	A fire damper including a frame and a plurality of blades rotatably mounted to the frame such that each blade is rotatable about a respective rotational axis between an open rotational position and a closed rotational position, each blade including at least one substantially planar portion; and a side edge portion which is curved away from a plane of the substantially planar portion, wherein a first curved side edge portion of a first of the blades is adapted to engage a second curved side edge portion of a second of the blades, adjacent the first, when the blades are in the closed position; and wherein the first curved side edge portion curves in an opposite direction to the second curved side edge portion when the first and second blades are engaged.