Damper blade system

Details Damper blade system Damper blade system

1996-09-16

1998-11-17

Joyce, Harold

Ventilation

Having forced recirculation

Including unitary housing having both inlet and outlet airways

136601, 454236, F24F 1315

Patent

active

058368140

ABSTRACT:
A damper blade system for positioning proximate a duct includes a housing with two, opposing sides; a first damper blade; and a second damper blade. The first damper blade is rotatably supported between the two sides of the housing, and one end of the first damper blade is coupled to a damper gear. The second damper blade is also rotatably supported between two sides of the housing adjacent the first damper blade, and one end of the second damper blade is coupled to another damper gear. The system further includes a support disposed on the side of the housing with the damper gears; a rack, having a plurality of teeth engaging the damper gears, movably disposed in the support; and a drive means for moving the rack along the support.

REFERENCES:
patent: 3212424 (1965-10-01), Davis
patent: 3746042 (1973-07-01), Finkel
patent: 3847210 (1974-11-01), Wells
patent: 4506825 (1985-03-01), Grant

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