Damper operator for use with air, smoke and fire dampers

Details Damper operator for use with air, smoke and fire dampers Damper operator for use with air, smoke and fire dampers

1981-01-30

1984-09-25

Weakley, Harold W.

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

98 86, 137 75, 137 77, 236101R, 49 7, 49 8, 16 485, F24F 700

Patent

active

044729995

ABSTRACT:
A damper operator for use with a damper having a frame and a damper blade pivotally associated with the frame, which damper operator comprises a drive rod; a pair of lever arms which are pivotally associated with each and which extend between the drive rod and a pivoting mechanism associated with the blade of the damper; and a latching mechanism which extends between portions of each of the lever arms, and which permits selective engagement and disengagement between those portions of the lever arms, and accordingly, selective respective rotation of the lever arms, so that the blade of the damper can be urged toward a predetermined orientation.

REFERENCES:
patent: 1515081 (1924-11-01), Toelle
patent: 1731214 (1929-10-01), Eshbaugh
patent: 2901064 (1959-08-01), Lasier
patent: 3012446 (1961-12-01), Muehl
patent: 3718081 (1973-02-01), Root
patent: 3889314 (1975-06-01), McCabe
patent: 3951051 (1976-04-01), Dry

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