Motorized control damper

Details Motorized control damper Motorized control damper

1988-04-27

1989-07-04

Rosenthal, Arnold

Fluid handling

Systems

Dividing into parallel flow paths with recombining

25112911, 25112902, 251212, 981212, F24F 1308

Patent

active

048441201

ABSTRACT:
A motorized control damper having at least one damper blade mounted to a drive journaled within a framework. An electric motor is directly connected to one end of the drive shaft on one side of the framework and a return spring connected to the other end of the drive shaft, preferably concentrically. Operation of the electric motor opens the damper blade by rotation of the drive shaft. Upon de-energization of the electric motor, the return spring counter rotates the drive shaft to close the damper blade.

REFERENCES:
patent: 3042357 (1962-07-01), Engholdt
patent: 3319646 (1967-05-01), Smulka
patent: 3464341 (1969-09-01), Dobrin
patent: 3996952 (1976-12-01), Root

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