Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1984-08-10
1985-12-03
Joyce, Harold
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
16 485, 49 7, 49 8, 137 75, 137 77, 236101R, F24F 700
Patent
active
045559813
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; and biasing means to urge the damper closed when the arms are disengaged; and means to prevent the blade from opening when the arms are disengaged and the blade has been biased shut.
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), Rout
patent: 3889314 (1975-06-01), McCabe
patent: 3951051 (1976-04-01), Dry
LandOfFree
Damper operator for use with air, smoke and fire dampers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Damper operator for use with air, smoke and fire dampers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Damper operator for use with air, smoke and fire dampers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1389530