Opposed blade balanced damper

Details Opposed blade balanced damper Opposed blade balanced damper

F - Mech Eng,Light,Heat,Weapons

24

F

98/18

F24F 13/10 (2006.01)

Patent

CA 1282276

ABSTRACT OF THE DISCLOSURE An opposed blade balanced damper includes three sector-shaped damper blades individually mounted to a frame for pivotal movement around a pair of pivot tabs integrally formed on each damper blade. A user-actuable control assembly simultaneously controls the relative rotational position of each damper blade so as to selectively regulate airflow through a duct. The damper blades and control assembly function to direct airflow toward the center of the duct and thereby maintain symetrical airflow through the duct. This is achieved by rotating the damper blades so that the inner ends of the damper blades move downstream, and the outer ends of the damper blades move upstream, as the damper blades are rotated from a closed to an open position.

574635

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